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
The some() method tests whether at least one element in an array passes a certain position. If the array is empty, the some() method returns false, Here’s an example: const myArray = []; if (myArray.some(item => item !== null)) { console.log('Array is not empty'); } else...
php// array declaration$array1=array("hello","world");$array2=array();//checking whether arrays are empty or notif(empty($array1)){echo"array1 is empty";}else{echo"array1 is not empty";}if(empty($array2)){echo"array2 is empty";}else{echo"array2 is not empty";}?> Output arra...
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...
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 ...
let arr = [1, 'hello', {}, [], 'JavaScript', true]; let allTruthy = arr.every(Boolean); console.log(allTruthy); // true In this example, the every() method checks each element in the array to see if it's truthy. If all elements are truthy, it returns true; otherwise, it ...
With JavaScript, it can be difficult to check whether an object is empty. With Arrays, you can easily check withmyArray.length, but on the other hand, objects do not work that way. The best way to check if an object is empty is by using a utility function like the one below. ...
In this article, we've gone over the few ways to check whether an array contains a value or not, in JavaScript. We've covered the includes() function, which returns a boolean value if the value is present. The indexOf() function returns the index of a value if it's present, and ...
In JavaScript, you can check if every element of the first array exists in the second array, in the following ways: Using Array.prototype.every();