Question

I have some text in different formats within my DOM body like this

(min-width: 400px)
(max-width : 500px)
(min-width :600px)
( max-width:700px )

I want to detect only digits from these formats & return them in to array

I tried

document.write($('body').text().match(/ *\([^)\d+]*\) */g, ""));

But it returns null. What I’m doing wrong ?

Here is fiddle : http://jsfiddle.net/gQHT2/1/

Answer 1

What you can do is using the following regexp:

/\(\D*(\d+)px\s*\)/g

This will match a (, any non-number garbage, the number itself with px appended, any spaces and a trailing ). The number is grouped (enclosed with ()), so that you can get the result separately if you use regexp.exec: http://jsfiddle.net/gQHT2/9/.

$("body").html(function(i, html) {
    var regexp = /\(\D*(\d+)px\s*\)/g;
    var items = "";
    var current;
    while(current = regexp.exec(html)) {
        items += current[1] + "<br>";  // [0] is match, [1] is first group
    }
    return items;
});