Javascript Sort Array Of Objects By Key Descending

Sort: Array. This is Recipe 11. In many a cases we will not want to create the array with a fixed size or length. The anonymous function returns whether or not the first object's age is less than the second's, thus sorting the entire array in ascending order by age. Here we will learn how to sort an ArrayList in descending (or decreasing) order. Each object has a key property - which is what we used as the grouping value using the key function. OP's question was how to sort an object literal. When you think about a JavaScript in terms of an associative array the index is the member name. reverseOrder() static method returns a Comparator object that imposes the reverse of natural ordering on a collection of objects that implement the Comparable interface. Sorting a one dimensional array in java is straight forward and easy, just call java. Here's a simple example using Array's sort function. JavaScript's sorting mechanism is a model of simplicity, yet bubbling under the surface is some incredibly flexible and powerful functionality. The sort() method takes the list to be sorted (final sorted list is also the same) and a comparator. JavaScript is more than just strings and numbers. In the rest of the Main() code, we change this line to call the function for each of the other sorting algorithms. Get complete array information; PHP Sorting Arrays. key removes a value by the key. The orders of items in the arrays are preserved, with items from the second array appended. Sort array of objects by string property value in javascript - JavaScript Array. In JavaScript, the way to get the size of an array is to use the length property, like this: alert(my_array. To make them behave in an array-like-way, JavaScript arrays are not just dictionaries though, they’re instances of the built-in prototype/class. Neither startkey nor endkey can be specified with this option. If sort_keys is True (the default), then the output of dictionaries will be sorted by key; this is useful for regression tests to ensure that JSON serializations can be compared on a day-to-day basis. reverseOrder() method along with Collections. and an array of such pairs: x: array of pairs. Sort an array of elements using the Shell sort algorithm, a diminishing increment sort. Sort(Array, Array): Sorts a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array. We have models by Izip, Anferro, ProdecoTech, Haibike, Benelli, and BH Easy Motion. A constructor is a function that creates and initializes an object. The Shell sort (also known as Shellsort or Shell's method) is named after its inventor, Donald Shell, who published the algorithm in 1959. JavaScript array sort alphabetically. @steve's is actually the most elegant way of doing it. 592+05:30 Java, Java EE, EJB, Struts, Hibernate, MySQL, JavaScript my experience A Blog. But it works by duck-typing, so avoid passing objects with a numeric length property. Sort an Integer array in descending order. The default sort function compares the items in the array as strings, but you can pass a custom function to sort() if you want to sort an array of objects by a property of the objects:. In JavaScript, the way to get the size of an array is to use the length property, like this: alert(my_array. "Sorting an array of objects with Jquery" is published by Aram Koukia in Aram Koukia. The function calculates 40 - 100 (a - b), and since the result is negative (-60), the sort function will sort 40 as a value lower than 100. A lightweight introduction into object looping and manipulation using Object. Even worse, the code can be tough to follow and making changes in the future is complicated by conditional logic in the sorting function. sort() method. length value which is in this case equal to 4 scripts [0] is the first element of the array and scripts [3]. This meant that the first item we added became item 0, the second item 1, and so on. Comparator to sort a Java object based on its property value. By now we have seen several examples of composition (the ability to combine language features in a variety of arrangements). Array reduce method is very powerful and it can be used to safely access nested objects. Complete code as follows:. For example, '+label' or '-label'. But, before using this method, let's learn how the Arrays. What’s new in ECMAScript 5. Each object has a key property - which is what we used as the grouping value using the key function. It is a side effect of the weak typing in JavaScript. sortBy() accepts a fn that selects what value from an object to use as comparison, and returns a function that can be passed directly to Array. equals((Object) e2) for every e1 and e2 of class C. Sort method that accepts IComparer. To sort an associative array we need to use the asort() function to keep keys and values together as they are sorted. sort() This will sort the given list in ascending order. Sort array JavaScript methods can help you with sorting arrays in alphabetical, reverse, random, numerical, descending and ascending order. union to built-in concat method, all JavaScript arrays will also have union. JavaScript Examples This page contains JavaScript examples - examples of JavaScript tricks that you can use for your own website. Here in this tutorial, we are going to explain the easiest way to sort an array objects. See Peter Michaux's article for more details. When using an array assignment pattern, the value must have an iterator. Second, the actual behavior of the spaceship operator isn't defined. sortBy Object Array Property Name Example. lodash supports multiple sorting keys by the "pluck" syntax, but only can deal with ascending sorting this way. We must test parallelSort to see if it is faster in a program. 'null', '0', '""', 'false', 'undefined' and 'NaN' values from an array. With 7 years of development experiences, he can't produce his own code and even copied the wrong version of codes with bugs. After the for loop the array is converted to a String using Arrays. Say I have an array of a few objects: var array = [{id: 1, date: Mar 12 2012 10:00:00 AM}, {id: 2, date: Mar 8 2012 08:00:00 AM}]; How can I sort this array by the date element in order from the date closest to the current date and time down? Keep in mind that the array may have many objects, but for the sake of simplicity I used 2. Array resizing. Take a look at how to search the list. In this example, we're using o. \$\endgroup\$ – SirPython Sep 8 '15 at 22:21 1 \$\begingroup\$ @SirPython True, but the input isn't an array of dates, but an array of objects that contain dates. The simplest method of assigning keys is by index: the first datum and the first element have the key “0”, the second datum and element have the key “1”, and so on. Sorting Part of an Array. java to read in a sequence of string from standard input and securely shuffle them. \$\begingroup\$ If you just do [array of dates]. Yes, I know underscoreJS provides the method sortBy but it sorts ascending, it returns an orderer array and there is not any parameter to. Originally published in the A Drip of JavaScript newsletter. For example, it's much faster search an object. sort-object multiple properties - use descending first. But for arrays we usually want the rest of elements to shift and occupy the freed place. If an object does not have one of the specified properties, the property value for that object is interpreted by Sort-Object as Null and placed at the end of the sort order. In this article we will discuss how to sort a list of numbers in ascending and descending order using two different techniques. A short example of a hash in JavaScript would be as follows:. JSFiddle or its authors are not responsible or liable for any loss or damage of any kind during the usage of provided code. Equality is one of the most initially confusing aspects of JavaScript. Array reduce method is very powerful and it can be used to safely access nested objects. Use lambda expression to even more shorten the syntax. reverseOrder()); The Collections. UB is the last element of the input array to sort. By now we have seen several examples of composition (the ability to combine language features in a variety of arrangements). Insert a new. Create Key Value Pair Array Using Javascript, Our today's article is simple but demanding. If you want to push something onto that array, it would be: person. By modifying the values of LB and UB, you can sort only a subset of the array. The purpose of the JSON Sorter tool is to sort key names and key values, this can be both alphabetical and numerical values, and can be sorted ascending or descending (reversed). When the sub-array length reaches a minimum granularity, the sub-array is sorted using the appropriate Arrays. the "id" and the result should be in the order of "id" 0,1,2. sort() method is applicable to Collection interface, any Collection implementation like Set, HashSet can also be sorted in ascending, descending or reverse order of elements. javascript Array Contains. The simplest approach (in my opinion) is to use the Set object which lets you store unique values of any type. Associative Arrays in JavaScript are a breed of their own. The goal was to sort the author list by number of posts before outputting the list. Imagine you have an array of objects like below and you want to sort them:. How to sort two array of objects using Underscore. 'null', '0', '""', 'false', 'undefined' and 'NaN' values from an array. You can also use our online editor to edit and run the code online. Sorting an object is one of those little things which nobody ever considers useful to know (until it becomes so), but it's proven particularly useful to me in the last few months - not necessarily for the comparison of two objects at runtime (which, thankfully, there are much quicker things. To specify the ordering, wrap the attribute with either r. Sorting arrays of objects by property. We have models by Izip, Anferro, ProdecoTech, Haibike, Benelli, and BH Easy Motion. It is usefull for sorting query results from a database by a particular field after the query has been returned This function can be quite greedy. What’s new in ECMAScript 5. Sorting arrays in JavaScript is done via the method array. This method is a JavaScript extension to the ECMA-262 standard; as such it may not be present in other implementations of the standard. 23, “How to Sort an Existing Map by Key or Value” Problem. For example, if you have 3 arrays that all look like [ 'a', 'b' ]', but then push` a different string on each one, they will be sorted based on the 3rd string. Introduction to JavaScript array filter method. let sum = [1, 2, 3]. Speaking of sorting, when sorting an array the straight forward sorting functions are only for sorting by the keys or by the values. If you are sorting an array from a database result set, such as MySQL for example, another approach could be to have your database sort the result set by using ORDER BY DESC, which would be the equivalent of using rsort() on the resulting array in PHP. A string is a sequence of one or more characters that may consist of letters, numbers, or symbols. Sort by key in descending order. key: Only return documents with IDs matching this string key. Comparator to sort a Java object based on its property value. The variable contains a reference to the new object. Then I use moment. 2D Arrays Library - Google Apps Script Examples Search this site. In order to add LINQ functionality to JavaScript, all we need to do is to add those methods to Array. A value of -1 indicates to sort to the end of the array. More JavaScript array map example. It got me thinking about sorting by even more keys. In this article we will discuss how to sort a list of numbers in ascending and descending order using two different techniques. In this code snippet I have define java-script array values are in the form of key and value. As mentioned in the introduction, JavaScript uses objects to implement the array concept. The Sort-Object cmdlet sorts objects based on properties specified in the command or the default sort properties for the object type. Property parameter can take entries of form or hashtable (notice @). 592+05:30 Java, Java EE, EJB, Struts, Hibernate, MySQL, JavaScript my experience A Blog. First, this code creates an array f. How to use Given an array of objects:. You have an unsorted Scala Map and want to sort the elements in the map by the key or value. If you pass the contextObject to the map() method, you can reference the contextObject inside the callback() function using the this keyword. In this example, we're using o. String arrays. Sort HashMap by Key. PHP provides a range of functions for sorting data based on either the key or value of an associative array. If 'fields' is set to 'all' (default), or 'all_with_meta', it will return an array of WP_User objects. We can add a no-argument constructor, code for array doubling in insert(), and code for array halving in delMax(), just as we did for stacks in Section 1. The Old fashion way. Sort array of objects by string property value in javascript - JavaScript Array. The sort() method sorts the elements of an array in place and returns the sorted array. toString(). note: To solve both the problems of mutating an object in place AND to get access to a more intuitive sort function, consider using lodash. For this reason, we can say that a JavaScript multidimensional array is an array of arrays. Create Key Value Pair Array Using Javascript, Our today's article is simple but demanding. It is used in practice once in a blue moon and its main application is to make an introduction to the sorting algorithms. It offers O(n log(n)) performance and is typically faster than traditional (one-pivot) Quicksort implementations. Working with arrays is a daily task for most developers. See the Pen JavaScript - Sort the specified array of objects by title value - array-ex- 25 by w3resource (@w3resource) on CodePen. The Sort-Object cmdlet sorts objects based on properties specified in the command or the default sort properties for the object type. However it uses a stable, adaptive, iterative implementation of mergesort algorithm for Array of Objects. Note that this guarantees that the return value will be >= 0 if and only if the key is found. Java provides Collections. However, you can create a multidimensional array by defining an array of elements, where each element is also another array. reduce((total, num) => total + num, 0); We create a variable named sum and set it equal to the returned value of our reduce() method. Previously, Java’s Arrays. The advantages and disadvantages are given too. Note that the order of startkey and endkey is reversed when descending:true. The method calls Arrays. As explained earlier and can be seen from Illustration 1, a 2d array in java is an array of arrays, thus, for sorting a 2d array on a column, we have to sort an integer array, therefore the generic type of this Comparator object should be Integer[ ]. lodash supports multiple sorting keys by the "pluck" syntax, but only can deal with ascending sorting this way. For example, if you define a composite structure that presents a name-value pair (in pseudo-code): Define structure pair such that: name as a string value as a string and an array of such pairs: x: array of pairs then define a sort routine that sorts the array x by the key name. It stores a fixed-size sequential collection of elements of the same type. In standards, it is often more convenient to parse JSON into realm-independent maps , lists , strings , booleans , numbers, and nulls. For example, we have a map of words and its frequency count as key - value pair i. In the main() method, we've created an array list of custom objects list, initialized with 5 objects. It is usefull for sorting query results from a database by a particular field after the query has been returned This function can be quite greedy. Before going through the example of them, let's see what's the output when we try to. sort uses dual-pivot Quicksort on primitives. sortBy() accepts a fn that selects what value from an object to use as comparison, and returns a function that can be passed directly to Array. Sort(SortedProductCodes, _ SortedProductNames). At their most fundamental level, JavaScript arrays are dictionaries with numeric keys numbered from zero. This is an excerpt from the Scala Cookbook (partially modified for the internet). Sometimes you can get by with the normal version of sort(), but what if we wanted to change how the container was sorted by having it sort by descending order instead of ascending? Or what if we had a container full of a special type of class objects we created and need to sort that container a special way?. Originally published in the A Drip of JavaScript newsletter. Using JavaScript's sort Method for Sorting Arrays of Numbers Adebiyi Adedotun The sort method available on the Array prototype allows you to sort the elements of an array and control how the sorting should be done. Object Equality in JavaScript. Array: An array of function and/or string predicates. write("sort return: "+a1. sort method. The for loop in the above code loops through the elements of the array and display one by one vertically by adding one line break at the end of each element. It is very useful when you want to apply multiple column sorting on GridView s with ObjectDataSource. In future, Arrays class should provides more generic and handy method – Arrays. order is a 2D array to allow multi-column ordering to be defined. This code takes each array element, uses array subtraction to remove it from the original input array saved in a , and counts the number of remaining elements. In other words, Set will automatically remove duplicates for us. In this article we will discuss how to sort a list of numbers in ascending and descending order using two different techniques. In this example the function sort() the elements of the array are sorted according the function applied on each element. The better way to loop through objects is first to convert the object into an array. See the Pen JavaScript - Sort the specified array of objects by title value - array-ex- 25 by w3resource (@w3resource) on CodePen. Run the sorting algorithm of interest (here IntArrayBubbleSort()). The problem is that this snippet is limited to objects where the new object key is going to be id. Instead, we use a special Comparison Function. JavaScript Examples This page contains JavaScript examples - examples of JavaScript tricks that you can use for your own website. An array is a group of like-typed variables that are referred to by a common name. The table below is ordered (descending) by the Age column. As mentioned in the introduction, JavaScript uses objects to implement the array concept. sort() This will sort the given list in ascending order. we will learn to sort set, list and map containing primitive types and custom objects. Skip to content. Sorting of ArrayList in descending order; We generally use Collections. Instead, we use a special Comparison Function. In addition to the JavaScript objects, the MongoDB shell provides built-in objects that you will learn about in the following hours. The reduce() method works from left to right in our array. In this code snippet I have define java-script array values are in the form of key and value. Like numerically. Array: An array of function and/or string predicates. You will also. Neither startkey nor endkey can be specified with this option. Let's get started by writing our prototype Sort method. Notice that you can add more than one object to an array at once, if you like. Introduction to JavaScript array sort method. The method also has a pre-set order, in which case the items are to be sorted in ascending alphabetical order. Rewriting JavaScript: Converting an Array of Objects to an Object. Improve this sample solution and post your code through Disqus. Name, or you may wish to apply sorting on multiple fields i. Every Java object created, including every Class loaded, has an associated lock or monitor. That’s natural, because delete obj. Sort ArrayList in descending order (1) Static keyword in java (1) Static method vs final static method in java with example programs (1) String vs stringbuffer vs stringbuilder (1) Super keyword in java (1) Super keyword interview questions java (1) Svn (1) TCS selenium webdriver interview questions (1) TCS selenium webdriver interview. In this example the function sort() the elements of the array are sorted according the function applied on each element. You can use any of these examples by copying and pasting the code straight into your website. bindKey(object, key, [partials]) source npm package. A simple AngularJS filter for summarizing the values of an array containing objects by a key. Associative Array in JavaScript. reduce((total, num) => total + num, 0); We create a variable named sum and set it equal to the returned value of our reduce() method. Mozilla suggest: So, if you want to simulate an ordered associative array in a cross-browser environment, you are forced to either use two separate arrays (one for the keys and the other for the values), or build an array of single-property objects, etc. This meant that the first item we added became item 0, the second item 1, and so on. length; };. If you wan't to sort JSON based data or an multidimensional object (ascending or descending), you must fetch the array/object keys for sorting - After a sort, you can build a new Object with the correct sorting. Yes, I know underscoreJS provides the method sortBy but it sorts ascending, it returns an orderer array and there is not any parameter to. What's not clear from the documentation or common examples is that is that it can also accept an array of properties with which to order the collection. sorted() Function. One of PHP's most powerful data types is the array. keys creates an array that contains the properties of an object. Download source - 14. If you want to sort using TreeMap then it's simple, just create a TreeMap by copying content of HashMap. V8 represents your objects in an object model. keys, values, entries. Solution: a reverse-sorted array of N = 2^k + 1 keys uses approximately 1/2 N lg N - (k/2 - 1) compares. lodash supports multiple sorting keys by the "pluck" syntax, but only can deal with ascending sorting this way. It's all about the sort() method of the Array object. Using JavaScript's sort Method for Sorting Arrays of Numbers Adebiyi Adedotun The sort method available on the Array prototype allows you to sort the elements of an array and control how the sorting should be done. Then, you can use the sorted built-in to order those keys. length, but on the other hand, objects do not work that way. However, it has one important difference: it can hold more than one item of data at a time. Object Equality in JavaScript. Now that this is complete we have a list of all our custom objects. At current, it will sort a variety of items in an array; Ascending or Descending. It’s all it does. jquery sort array by index Quick example on how to use JavaScript to sort arrays by index values. Sorts a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the IComparable implementation of each key. We can sort the JavaScript array elements by using the sort() method of Array class in JavaScript. Passing by pairs is the reverse of _. And since in JavaScript the object { id : 1, name : 'Alicw' } does not equal { id : 1, name : 'Alice' } it thinks that the entire child needs to be removed and replaced by a new one. I adore JavaScript objects. You can use Arrays. You can convert an object into an array with three methods: Object. You're probably asking "well, why don't you marry them?" Trust me: if I could, I would. The array sort JavaScript function is used to sort array items. Sort Array in descending order. Comparator to sort a Java object based on its property value. Run the sorting algorithm of interest (here IntArrayBubbleSort()). note: To solve both the problems of mutating an object in place AND to get access to a more intuitive sort function, consider using lodash. Below is the code to provide the same functionality. Get to it!. 1 So passing ['title','issue','-grade'] to orderBy tells Angular to sort first by the title, then by the issue and finally by the grade properties of the it object. This array will dynamically set its value as and when a new variable or entry is added. A Map store the elements in the sorted order of keys. By setting Array. entries() returns an array whose elements are arrays corresponding to the enumerable string-keyed property [key, value] pairs found directly upon object. This function can be used to sort list of integers, floating point number, string and others. Sort Arrays Using TypeScript. This is general syntax to create a comparator in Java. One of the first examples we saw was using a method invocation as part of an expression. Therefore, the goal of this post is to come up with a solution for sorting by descending Date and ascending Time. The insertion point is defined as the point at which the key would be inserted into the array: the index of the first element greater than the key, or a. merge() operation forms an array that contains all elements from the two arrays. By default, this method sorts the unsorted list into ascending order, according to the natural ordering of its elements. The Array in JavaScript is a global object which contains a list of items. The sort() method sorts the items of an array. I will show. You can use Arrays. Arrays and objects can be sorted ascending or descending. One of the most annoying things about JavaScript is that it has no scope for variables. Okay, now let's see how to sort something a little more complicated. Improve this sample solution and post your code through Disqus. Collections. The for loop in the above code loops through the elements of the array and display one by one vertically by adding one line break at the end of each element. An expression can be optionally prefixed with + or -to control the sorting direction, ascending or descending. sort((a, b) => (a. An associative array is simply a set of key value pairs. Sort ArrayList in descending order (1) Static keyword in java (1) Static method vs final static method in java with example programs (1) String vs stringbuffer vs stringbuilder (1) Super keyword in java (1) Super keyword interview questions java (1) Svn (1) TCS selenium webdriver interview questions (1) TCS selenium webdriver interview. Sort an Array. JavaScript Sort Array: Summary. This page lists the objects exposed by the Google Visualization API, and the standard methods exposed by all visualizations. In standards, it is often more convenient to parse JSON into realm-independent maps , lists , strings , booleans , numbers, and nulls. The only argument to this function is a compare function that is used to sort the elements according to different attributes and in the different order. If you wan't to sort JSON based data or an multidimensional object (ascending or descending), you must fetch the array/object keys for sorting - After a sort, you can build a new Object with the correct sorting. length value which is in this case equal to 4 scripts [0] is the first element of the array and scripts [3]. With JavaScript, it can be difficult to check whether an object is empty. \$\begingroup\$ If you just do [array of dates]. length, but on the other hand, objects do not work that way. Actually what i want to do is not to sort the array by several properties at the same time, but to sort the array by a first property, e. By setting Array. No, like seriously bro; these JavaScript-given methods do exist. An associative array is simply a set of key value pairs. 32 KB; Introduction. LINQ query syntax supports multiple sorting fields seperated by comma whereas you have to use ThenBy & ThenByDescending methods for secondary sorting. Here is example to use the above method: var output = getPivotArray(arr, 0, 1, 2); To show array in HTML table, add following javascript function:. To analyse the best method of doing this in terms of performance I looked at a JS perf test for. To sort the array of objects by date in ascending and descending order, we are using JavaScript sort() method , as discussed earlier. Javascript sort array of objects by key value You could have just sorted it descending from the start by doing: Of course this is moving away from the. If indent is a non-negative integer (it is None by default), then JSON array elements and object members will be pretty-printed with that indent. The most frequently used general purpose implementation of an associative array is with a hash table: an array combined with a hash function that separates each key into a separate "bucket" of the array. Objects are similar to classes. Following are the important points about Arrays − This class contains various methods for manipulating arrays (such as sorting and searching). A simple AngularJS filter for summarizing the values of an array containing objects by a key. The other answers to this question are outdated, never matched implementation reality, and have officially become incorrect now that the ES6/ES2015 spec has been published. Property parameter can take entries of form or hashtable (notice @). merge() operation forms an array that contains all elements from the two arrays. keys: Array of string keys to fetch in a single shot. Sorting elements by date in jQuery and JavaScript 21/05/2014 Gabriele Romanato jQuery Short link During the last month I've been writing a lot of JavaScript code for three interesting projects. Note: This approach requires a lookup to get the values from the sorted key view. The method also has a pre-set order, in which case the items are to be sorted in ascending alphabetical order. In this example the function sort() the elements of the array are sorted according the function applied on each element. In this example, we're using o. Below is the code to provide the same functionality. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: