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 “neveropen” at the beginning of each line in a string.
Javascript
function geek() { let str1 = "neveropen is the computer " + "science portal for neveropen."; let regex4 = /^neveropen/gm; let match4 = str1.match(regex4); console.log("Found " + match4.length + " matches: " + match4);}geek(); |
Found 1 matches: neveropen
Example 2: This example searches the word “neveropen” at the beginning of each line in a string and replaces it with “GEEKSFORGEEKS”.
Javascript
function geek() { let str1 = "neveropen is the computer " + "science portal for neveropen."; let regex4 = new RegExp("^neveropen", "m"); let replace = "GEEKSFORGEEKS"; let match4 = str1.replace(regex4, replace); console.log(" New string: " + match4);}geek(); |
New string: GEEKSFORGEEKS is the computer science portal for neveropen.
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.
