JavaScript RegExp {X,Y} Quantifier

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JavaScript RegExp {X,Y} Quantifier

The RegExp q{X,Y} quantifier matches any string that contains a sequence of X to Y q's.

Note: X and Y are non-negative integers and X <= Y.

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <button onclick="myFunction()">Click me</button> <p id="point"></p> <script> function myFunction() { var str = "a1 b12 c144 d1728 e20736"; var pattern = /\d{2,3}/g; var result = str.match(pattern); document.getElementById("point").innerHTML = result; } </script> </body> </html>

Syntax

new RegExp("q{X,Y}"); //or /q{X,Y}/

Syntax with modifiers

new RegExp("q{X,Y}", "g"); //or /q{X,Y}/g

q{X} vs q{X,Y} Quantifiers

Example

HTML Online Editor
<!DOCTYPE html> <html> <body> <button onclick="myFunction()">Click me</button> <p id="point"></p> <script> var x = document.getElementById("point"); function myFunction() { var str = "a1 b12 c144 d1728 e20736"; var p1 = /\d{3}/g; var p2 = /\d{2,3}/g; var r1 = "q{X} = " +str.match(p1); var r2 = "q{X,Y} = " +str.match(p2); x.innerHTML = r1+"<br>"+r2; } </script> </body> </html>

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