How do I say remove a number preceded by a non-digit and followed by a dash, but leave the preceding non-digit character?

RegExp: /[^D]4-/

String: http://localhost/images/4-6-.png

Remove: 4-

The 4- should be removed and it should leave the preceding / or -

This would work: /4-/

But it would also remove 14- or 44-

Dynamic Code:

http://jsfiddle.net/flackend/8s9X9/2/

Static Code:

var category_id = 4;

var src         = 'http://localhost/images/4-6-.png';

var regexp      = new RegExp('[^\D]'+ category_id +'\-')



$('p').append('regexp: '+ regexp +'<br>');

$('p').append(src +'<br>');



src = src.replace(regexp, '');



$('p').append(src);