将某些值从一个元素复制到另一个

Question

I'm trying to copy the width and height attributes from one element to another with JavaScript/jQuery but can't implement it.

I have something like that:

<div id="two">

<img src="picture.jpg" id="one" width="600px" height="300px" />

</div>

and I want to get this:

<div id="two" width="600px" height="300px" >

<img src="picture.jpg" id="one" width="600px" height="300px" />

</div>

Answer 1

With jquery :

var $one = $('#one');
$('#two').attr('width', $one.attr('width'))
.attr('height', $one.attr('height'));

But usually that's wrong. You should have a css that adapts the div to your image.

Answer 2

You can access the .width and .height properties of the image element directly.

Divs don't have those properties, so you have to use CSS to set them:

var img = $('#one').get(0);
$('#two').css({ width: img.width, height: img.height });

Answer 3

I'd suggest, without greater information:

var el = $('#two'),
    img = el.find('img');

el.css({'height' : img.height(), 'width' : img.width()});

References:

• find() .
• height() .
• width() .