Adding a class using JavaScript

Question

Could anyone give me a hand with the following JavaScript issue.

I am trying to come up with a function that adds a class to a div that has a specified class.

I have tried to come up with something based on what a few people have said but it doesn't seem to work.

Where am I going wrong?

Thanks

function toggleClass(matchClass,content) {
    var elems = document.getElementsByTagName('*'),i;
    for (i in elems) {
        if((" "+elems[i].className+" ").indexOf(" "+matchClass+" ") > -1) {
            elems[i].classList.toggle(content);
        }
    }
}

window.onload = function () {
    toggleClass("col-left","display");
}

can you use jquery? because that would be a really simple $(matchClass).addClass(otherClass) — Joe Minichino
– Joe Minichino, Commented Aug 16, 2013 at 9:49

Halcyon · Accepted Answer · 2013-08-16 09:49:10Z

1

Because of some quirks in jsFiddle your code doesn't run. Remove the .onload wrapper and your code runs. See: http://jsfiddle.net/vZ9Hu/1/

answered Aug 16, 2013 at 9:49

Halcyon

57.7k10 gold badges93 silver badges131 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Barmar Over a year ago

Or just change the jsFiddle option from "onLoad" to "No wrap".

Collectives™ on Stack Overflow

Adding a class using JavaScript

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related