To check if a JavaScript array is empty or not, you can make either of the following checks (depending on your use case): const empty = !Array.isArray(array) || !array.length; const notEmpty = Array.isArray(array
Checking if a variable is an array in JavaScript is one of the most common tasks you may encounter while building a Javascript-based application. There are several ways to perform this check, each with its pros and cons. In this post, we'll review three ways to determine if a variable ...
constarray=['🍝','🍜','🍲'];constnotArray='not array';_.isArray(array);// true_.isArray(notArray);// false Yes, the syntax is the same as Lodash 🤓 #Why can't we usetypeof? Often, we want to check the type of a value, we simply usetypeof ...
Topic: JavaScript / jQueryPrev|NextAnswer: Use the indexOf() MethodYou can use the indexOf() method to check whether a given value or element exists in an array or not. The indexOf() method returns the index of the element inside the array if it is found, and returns -1 if ...
//code to check if a value exists in an array using javascript for loop var fruits_arr = ['Apple', 'Mango', 'Grapes', 'Orange', 'Fig', 'Cherry']; function checkValue(value, arr) { var status = 'Not exist'; for (var i = 0; i < arr.length; i++) { var name = arr[...
We can also use thefind()method to check if an array includes a value. This method returns the first element in the array that satisfies the provided testing function. letfruits=["apple","banana","orange"];lethasBanana=fruits.find(fruit=>fruit==="banana");console.log(hasBanana);// "ba...
Using the.find()Function to Find Element in an Array in JavaScript Another way to check if an element is present in an array is by usingthe.find()function. As compared to the.indexOf()and.includes()functions,.find()takes a function as a parameter and executes it on each element of th...
In this post, we will see how to unpack array in JavaScript. Ways to Unpack array in JavaScript There are multiple ways to do it. Let’s go through them. Using Destructuring Syntax To Unpack array in Javascript into separate variable: Use destructuring assignment to unpack array in separate ...
Array.isArray(value); Function Functions are functions so here just typeof is enough. // Returns if a value is a function functionisFunction (value) { returntypeofvalue==='function'; } Object Many things are objects in javascript. To know if a value is an object that can have propertie...
Use the toString() Method to Convert Array to String in JavaScript Join the Elements of the Array Using .join() Method in JavaScript Use JSON.stringify() to Convert Array to String in JavaScript Use Type Coercing to Convert Array to String in JavaScript The arrays are the most common...