html - How to get an element's padding value using JavaScript?

Question

I have a textarea in my HTML. I need to get the padding numerical value in pixels as either integer or float. How can I get it using JavaScript? I am not using jQuery, so I'm looking for pure JavaScript solutions.

Answer 1

This will return the padding-left value:

window.getComputedStyle(txt, null).getPropertyValue('padding-left')

where txt is the reference to your TEXTAREA element.

The above works in all modern browsers and in IE9. However, it does not work in IE8 and below.

Live demo: http://jsfiddle.net/simevidas/yp6XX/

Further reading: https://developer.mozilla.org/en-US/docs/Web/API/Window/getComputedStyle

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Btw, just for comparison, this is how you get the same job done using jQuery:

$(txt).css('padding-left')

The above does work in IE6-8.