javascript - Set DIV height for each by it's data-attribute -

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i trying loop through on each div has class of block , set it's height individually based on it's data-attribute data-height

html

<div class="block" data-height="300"></div> <div class="block" data-height="500"></div> <div class="block" data-height="700"></div>

jquery

$('.block').each(function(){      var size = $this.attr('data-height');     $(this).height(size); });

js fiddle http://jsfiddle.net/mlnby/166/

it's not returning height when have in each method though not setting height each one.

the problem in $this; replace $(this)

var size = $(this).attr('data-height');

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