dynamically add/remove style in javascript

Question

Is there a way in any browser to add/remove class names? For example, if I have a div with class names and I just want to remove/add \'name2\' is there a way to do that?

Answer 1

If you can use jQuery:

to remove:

$('#div1').removeClass('name2')

to add:

$('#div1').addClass('name2')

If you can't use jQuery, I found this url

http://snipplr.com/view/3561/addclass-removeclass-hasclass/

function hasClass(ele,cls) {
    return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}

function addClass(ele,cls) {
    if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}

function removeClass(ele,cls) {
    if (hasClass(ele,cls)) {
        var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
        ele.className=ele.className.replace(reg,' ');
    }
}

Honestly, I haven't used the non-jquery approach but it seems enough