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JavaScript RegExp {X,Y} Quantifier

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JavaScript RegExp {X,Y} QuantifierThe RegExp m{X, Y} Quantifier in JavaScript is used to find the match of any string that contains a sequence of m, X to Y times where X, Y must be numbered. 

Syntax: 

/m{X, Y}/ 

or

new RegExp("m{X, Y}")

Syntax with modifiers:

/\m{X, Y}/g 

or

new RegExp("m{X}", "g")

Example 1: This example matches the presence of the word between [a-g] of length 3 to 4 in the whole string. 

Javascript




function geek() {
    let str1 = "GeeksforGeeeeks@_123_$";
    let regex4 = /[a-g]{3,4}/gi;
    let match4 = str1.match(regex4);
 
    console.log("Found " + match4.length
        + " matches: " + match4);
}
geek();


Output

Found 2 matches: Gee,Geee

Example 2: This example replaces the word ‘ee’ or ‘eee’ with ‘$’. 

Javascript




function geek() {
    let str1 = "ee@128GeeeeK";
    let regex4 = new RegExp("e{2,3}", "gi");
    let replace = "$";
    let match4 = str1.replace(regex4, replace);
    console.log(" New string: " + match4);
}
geek();


Output

 New string: $@128G$eK

Supported Browsers: The browsers supported by RegExp {X, Y} Quantifier 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.  


Last Updated : 29 May, 2023
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