How can I erase all inline styles with javascript and leave only the styles specified in the css style sheet?

Question

If I have the following in my html:

<div style="height:300px; width:300px; background-color:#ffffff;"></div>

And this in my css style sheet:

div {
    width:100px;
    height:100px;
    background-color:#000000;
}

Is there any way, with javascript/jquery, to remove all of the inline styles and leave only the styles specified by the css style sheet?

Answer 1

$('div').attr('style', '');

or

$('div').removeAttr('style'); (From Andres's Answer)

To make this a little smaller, try this:

$('div[style]').removeAttr('style');

This should speed it up a little because it checks that the divs have the style attribute.

Either way, this might take a little while to process if you have a large amount of divs, so you might want to consider other methods than javascript.

Answer 2

Plain JavaScript:

You don't need jQuery to do something trivial like this. Just use the .removeAttribute() method.

Assuming you are just targeting a single element, you can easily use the following: (example)

document.querySelector('#target').removeAttribute('style');

If you are targeting multiple elements, just loop through the selected collection of elements: (example)

var target = document.querySelectorAll('div');
Array.prototype.forEach.call(target, function(element){
    element.removeAttribute('style');
});

Array.prototype.forEach() - IE9 and above / .querySelectorAll() - IE 8 (partial) IE9 and above.