Javascript

To compare values in JavaScript, the triple equal sign is the one you’re probably familiar with. The triple equals operator checks for strict equality between two values. Both the data type and value you’re comparing have to be precisely the same. The double equals tests for loose equality and preforms type coercion. This means we compare two values after converting them … Read more

JavaScript does not provide the multi-dimensional array natively or provide any method to define the 2D array. However, you can create a multi-dimensional array by defining the array of items, where each item is also another array. JavaScript 2D Array To create the 2D array in JavaScript, we have to create an array of array. … Read more

If you have the array of objects and you have to filter out the objects then use the filter() method that accepts a test function, and you need to write that test method in such a way that, it will filter out the unnecessary objects and give the array of objects that pass our test. … Read more

JavaScript Promise then() is an inbuilt function that returns a Promise. The then() method takes up to two arguments: callback functions for the success and failure cases of the Promise. Promises in JavaScript are an object representation of an asynchronous computation. You can think of a promise as a placeholder for a value that hasn’t … Read more

JavaScript map(), reduce(), and filter() are pure functions that return a new array and does not modify the original array. These functions are array methods. Each one will iterate over the array and perform some kind of transformation or computation. The map() function will return a new array based on the result of the function. … Read more

The forEach() is an inbuilt JavaScript function that executes a provided function once per every key/value pair in the Map object, in insertion order. JavaScript Map forEach The JavaScript map forEach() method executes the specified function once for each key/value pair in the Map object. The forEach function executes the provided callback once for each … Read more

You often get in the scenarios where you have an array of objects, and you need to find some specific object inside this array based on some property of the object. Let’s see how to find an object in the array in JavaScript. Javascript: Find Object in Array To find Object in Array in JavaScript, … Read more

Javascript array sort() is the inbuilt method that sorts all the items of the array in place and returns that array. The sort() method can also accept the parameter like function. So it will sort an array based on that function logic. The default sort order is built on converting the item into strings and … Read more