The exec() Method in JavaScript is used to test for the match in a string. If there is a match this method returns the first match else it returns NULL.
Syntax:
RegExpObject.exec(str)
Parameters:
- str: It is the string to be searched. This is a required field.
Return value:
- This method returns an array that contains the matched text if the match is found, else it returns null.
Example 1: This example searches for the string “computer” in the original string.
Javascript
function geek() { let str = "neveropen is the " + "computer science portal for neveropen."; let regex = new RegExp("computer",); // match "computer" in string. let rex = regex.exec(str); console.log(rex.length); console.log(rex)}geek() |
Output
1 [ 'computer', index: 21, input: 'neveropen is the computer science portal for neveropen.', groups: undefined ]
Example 2: This example searches for the string “rep” in the original string.
Javascript
function geek() { let str = "neveropen is the" + " computer science " + "portal for neveropen."; let regex = new RegExp("rep"); // Match "rep" in string. let rex = regex.exec(str); console.log(rex);}geek() |
Output
null
We have a complete list of Javascript Functions, to check those go through the Javascript Functions Complete Reference article.
Supported Browsers: The browsers supported by the JavaScript exec() Method are listed below:
- Google Chrome
- Apple Safari
- Mozilla Firefox
- Opera
- Internet Explorer
We have a complete list of Javascript RegExp expressions, to check those please go through this JavaScript RegExp Reference article.
