JavaScript RegExp test() Method

The RegExp test() Method in JavaScript is used to test for match in a string. If there is a match this method returns true else it returns false.

Syntax: 

RegExpObject.test(str)

Where str is the string to be searched. This is required field.

Example 1: This example searches for the string “computer” in the original string.  

Javascript

function geek() {
    let str = "GeeksforGeeks is the computer science"
        + " portal for geeks.";
    let regex = new RegExp("computer",);
    let rex = regex.test(str);

    console.log(rex);
}
geek()

Output

true

Example 2: This example searches for the string “GEEK” in the original string. 

Javascript

function geek() {
    let str = "GeeksforGeeks is the computer science"
        + " portal for geeks.";
    let regex = new RegExp("GEEK",);
    let rex = regex.test(str);

    console.log(rex);
}
geek()

Output

false

Supported Browsers: The browsers supported by RegExp test() Method are listed below: 

• Google Chrome
• Apple Safari
• Mozilla Firefox
• Opera
• Edge

We have a complete list of Javascript RegExp expressions, to check those please go through this JavaScript RegExp Complete Reference article.

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.