jquery select and use part of class name

问题

I have a lot of classes who starts with edit_. I've styled them with [class^="edit_"]. Now, each class have a different number like edit_20 edit_80 edit_150. How can i strip the first part of the class name (edit_) so that if passing it to a variable, it will only contain the number?

回答1:

Try to .split() it out with _ and get the second element from the returned array.,

var number = "edit_20".split('_')[1];

回答2:

Simple replace can do but make sure to convert into int.

 var number = parseInt(str.replace("edit_",''));

回答3:

One way to do it with Regex:

 if(/^edit_(\d*)/.test('edit_20'))
      var num = (/^edit_(\d*)/.exec('edit_20'))[1];

回答4:

ok, for those who will be landing here...i solved this way:

$("[class^='edit_']").each( function() {
    var ml = $(this).attr('class').split(' ')[0].split('_')[1];
    $(this).editable('[url]', {
        [...]
        maxlength   : ml,
    });
});

来源：https://stackoverflow.com/questions/24242938/jquery-select-and-use-part-of-class-name