JavaScript RegExp {X,} Quantifier
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JavaScript RegExp {X,} Quantifier
The RegExp q{X,}
quantifier matches any string that contains a sequence of at least X q's.
Note: X is a non-negative integer.
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{4,}/g;
var result = str.match(pattern);
document.getElementById("point").innerHTML = result;
}
</script>
</body>
</html>
Syntax
new RegExp("q{X,}");
//or
/q{X,}/
Syntax with modifiers
new RegExp("q{X,}", "g");
//or
/q{X,}/g
q{X} vs q{X,Y} vs q{X,} 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 p3 = /\d{4,}/g;
var r1 = "q{X} = " +str.match(p1);
var r2 = "q{X,Y} = " +str.match(p2);
var r3 = "q{X,}, = " +str.match(p3);
x.innerHTML = r1+"<br>"+r2+"<br>"+r3;
}
</script>
</body>
</html>
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