Question

$("a[href $='.pdf']" ).addClass("linkIconPDF");
$("a[href *='.pdf#']").addClass("linkIconPDF");
$("a[href *='.pdf;']").addClass("linkIconPDF");
$("a[href *='.pdf?']").addClass("linkIconPDF");

$("a[href $='.txt']" ).addClass("linkIconTXT");
$("a[href *='.txt#']").addClass("linkIconTXT");
$("a[href *='.txt;']").addClass("linkIconTXT");
$("a[href *='.txt?']").addClass("linkIconTXT");

So far so good, but how can it be simplified to match any file type?

Is it possible to do some regex grouping to match all possible file types like this?

$("a[href $='.([a-zA-Z0-9]{2,4})']" ).addClass("linkIcon$1");

Test script: http://jsfiddle.net/k2jqn/

Answer 1

$("a").each(function(){
    var match = this.href.match(/\.([a-zA-Z0-9]{2,4})([#;?]|$)/);
    if(match){
        $(this).addClass("linkIcon" + match[1]);
    }
});

Demonstration: http://jsfiddle.net/k2jqn/4/