While writing a program or any script or any piece of frontend code in Javascript, if you want to check if an array is empty or not, you can use the length property of arrays in Javascript. The length property of the array returns the count of the number of elements stored in the ...
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
Javascript: Check for an array of keywords match in a string https://stackoverflow.com/questions/54900214/javascript-check-for-an-array-of-keywords-match-in-a-string How to check if contains all keywords in any order of string? RegExp Javascript https://stackoverflow.com/questions/41748030/how...
The filter() method creates a new array with all elements that satisfy a certain condition. If the array is empty, the filter() method returns an empty array, Here’s an example: const myArray = []; if (myArray.filter(item => item !== null).length === 0) { console.log('Array...
JavaScript recognizes false, 0, -0, 0n, "", null, undefined, and NaN as falsy.To verify that all values in an array are falsy, you can again use the every() method, but this time with a function that checks for falsy values:...
trim() === ''){ document.write('String is empty'); } Following is the output of the above program −String is empty So, we have seen how to check the empty string in JavaScript using the length property and trim() method. Print Page Previous Next ...
In this article, we'll take a look at how to check if an array includes/contains a value or element in JavaScript. Check Array of Primitive Values Includes a Value Array.includes() Function The simplest way to check for a primitive value in an array is to use the includes() method: ...
Vue.JS check if Array,Object or String is empty: In Vue.js, To check if an array is empty in Vue.js, you can use the Array.length property, which returns the number of elements in the array To check if the string is empty in Vue.js, you can use the
How to Check if Object is Empty in JavaScriptHere's a Code Recipe to check if an object is empty or not. For newer browsers, you can use plain vanilla JS and use the new "Object.keys" 🍦 But for older browser support, you can install the Lodash library and use their "isEmpty" ...
Write a JavaScript function to check whether an 'input' is an array or not. Test Data: console.log(is_array('w3resource')); console.log(is_array([1, 2, 4, 0])); false true Sample Solution: JavaScript Code: // Function to check if the input is an arrayvaris_array=function(input...