Javascript check empty array

Empty strings contain no characters, while null strings have no value assigned. Here are different approaches to check a string is empty or not.

1.

Using === Operator

Using === operator we will check the string is empty or not. If empty then it will return “Empty String” and if the string is not empty it will return “Not Empty String”.

Syntax

if (str === "") {
console.log("Empty String")
} else {
console.log("Not Empty String")
}

2.

Using length and ! Operator

This approach uses length property to get the length of string and !

Check empty string java

Check empty string java

Javascript check empty object

Check if string is not empty javascript

Javascript empty string

How to check empty string in javascript

operator. and by using ! operator we will check string is empty or not.

3. Using replace() Method

This approach uses replace() Method. It will ensure that the string is not just a group of empty spaces where we are doing replacement on the spaces.