Here is how to retrieve the index of an item in a JS array based on its valueSuppose you have the value of an item which is contained in an array, and you want to get its index.How can you get it?If the item is a primitive value, like a string or number, you can use the ...
arr.map(function(element, index, array) {}, this); Each element of the array calls the callback function, which always passes the current element, the current element’s index, and the entire array object. Use a Map in JavaScript You can use a map to collect and add the outputs to...
How to Clear an Object in JavaScript I wrotea bookin which I share everything I know about how to become a better, more efficient programmer. You can use the search field on myHome Pageto filter through all of my articles. ShareShareShareShareShare ...
You are calling the Fetch API and passing in the URL to the JSONPlaceholder API. Then a response is received. However, the response you get is not JSON, but an object with a series of methods that can be used depending on what you want to do with the information. To convert the objec...
The LAMBDA function build custom functions without VBA, macros or javascript. Function syntax: LAMBDA([parameter1, parameter2, …,] calculation) LAMBDA(x,y,x+y) The two first parameters specifies which parameters to use, they correspond to the arrays in the MAP function. x+y is the formula...
Creating interactive elements: The draggable, zoomable map is a prime example of JavaScript’s ability to create engaging,interactive interfaces. Libraries like Leaflet and OpenLayers, built with JavaScript, make this possible. Communicating with servers: As you navigate the map, JavaScript communicates...
To insert a new key-value pair to a Map in JavaScript, call set() method on this Map and pass the key and value as arguments.
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Now, let’s get to the crux of the matter. In the previous section, we sorted the map using just thekeyvalue which is the first value (position0) within the array of theMap Entries. Here, we will map sort by value in JS using two methods depending on the data type of the values...
Convert Array to String (with and without Commas) in JS I wrotea bookin which I share everything I know about how to become a better, more efficient programmer. You can use the search field on myHome Pageto filter through all of my articles. ...