JavaScript RegExp m Modifier
The RegExp m Modifier in JavaScript is used to perform multiline matching. It takes the beginning and end characters (^ and $) as working when taking over multiple lines. It matches the beginning or end of each line. It is case-sensitive.
Syntax:
/regexp/m
or
new RegExp("regexp", "m")
Example 1: This example searches the word “w3wiki” at the beginning of each line in a string.
Javascript
function geek() { let str1 = "w3wiki is the computer " + "science portal for Beginner."; let regex4 = /^w3wiki/gm; let match4 = str1.match(regex4); console.log("Found " + match4.length + " matches: " + match4);}geek(); |
Found 1 matches: w3wiki
Example 2: This example searches the word “w3wiki” at the beginning of each line in a string and replaces it with “w3wiki”.
Javascript
function geek() { let str1 = "w3wiki is the computer " + "science portal for Beginner."; let regex4 = new RegExp("^w3wiki", "m"); let replace = "w3wiki"; let match4 = str1.replace(regex4, replace); console.log(" New string: " + match4);}geek(); |
New string: w3wiki is the computer science portal for Beginner.
Supported Browsers: The browsers supported by RegExp m Modifier 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 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.