If I were to embed a YouTube video for example
<iframe width="560" src="http://www.youtube.com/embed/25LBTSUEU0A" class="player" frameborder="0" allowfullscreen></iframe>
Using jQuery would I set a height with an aspect ration of 16:9 so if the width is 560 the height should be 315px.
I have this jquery to set a height but I dont know how to apply the 16:9 ratio
$('.player').parent().attr('width', ':9ratio');
or can this be done neatly using css?
Aspect ratio is just width:height. So if you wanted to calculate the height based on a known width it is pretty straightforward.
//width=560, wanted height is 315
$('.player').parent().attr('height', 560*9/16);
I would recommend using css calc instead of jQuery for this:
width: 560px;
height: calc(560px * 9/16);
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