Question

40

How to add height to existing height?

rated 0 times [ 47] [ 7] / answers: 1 / hits: 37898 / 13 Years ago, mon, january 2, 2012, 12:00:00

For example I want to add 20px to <div id='example'></div>, which is currently 20px.

I could get the existing height and add 20px and input it as the new height, but I wish to learn if there is a better way that might work like a += operator.

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dustin

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answered 13 Years ago tierney · Accepted Answer

You can pass a function into height() that has the element's current height as an argument and the return of the function will be the new height:

$('#example').height(function (index, height) {

    return (height + 20);

});

Here is a demo: http://jsfiddle.net/grajh/

Docs: http://api.jquery.com/height/