In this tutorial, we will look into all the JavaScript array methods and how they are applied in practice. Types of Array methods There are several methods for manipulating JavaScript arrays. Some of these methods are: 1. concat() This method is used to merge two or more arrays. It does...
Write a JavaScript function to remove a specific element from an array. Test data : console.log(remove_array_element([2, 5, 9, 6], 5)); [2, 9, 6] Click me to see the solution 32. Find Element in Array Write a JavaScript function to find an array containing a specific element. ...
An array, like any JavaScript object, has a toString() method. For an array, this method converts each of its elements to a string (calling the toString() methods of its elements, if necessary) and outputs a comma-separated list of those strings. Note that the output does not include ...
It is not a good practice to save an iterator. The iterator has a next() method to access each element one at a time. As soon as you start using it, it cannot be reset or restarted. Example Use the next() method of the iterator: // Create an Array const fruits = ["Banana", ...
The Array map() Method Syntax array.entries() Parameters NONE Return Value TypeDescription IterableAn Iterable object with the key/value pairs from the array. More Examples Example Iterate directly over the Iterator: // Create an Array constfruits = ["Banana","Orange","Apple","Mango"]; ...
for-inloops should be used to iterate over nonarray objects. Looping withfor-inis also calledenumeration. It’s important to use the methodhasOwnProperty()when iterating over object properties to filter out properties that come down the prototype chain. ...
For more Practice: Solve these Related Problems: Write a JavaScript function that computes the union of two arrays and removes duplicate elements using a Set. Write a JavaScript function that combines two arrays and filters out duplicates using the filter() method. ...
The JavaScript methodtoString()converts an array to a string of (comma separated) array values. Example constfruits = ["Banana","Orange","Apple","Mango"]; document.getElementById("demo").innerHTML= fruits.toString(); Result: Banana,Orange,Apple,Mango ...
Theincludes()method for arrays is similar to its string counterpart, allowing you to search for specific elements within an array. Let's dive into some examples to see how this method works in practice. Example 1: Basic includes() usage with arrays ...
functionisArray(obj){returnObject.prototype.toString.call(obj) ==='[object Array]'; } Note that if the toString() method is overridden, you will not get the expected result using this trick. Or use… Array.isArray(obj);// its a new Array method ...