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Img height in proportion to img width, but img width is in % of parent

This should give you all you need.

var img =

// these vars are numbers representing a length in
var w = img.width, h = img.height; // displayed
dimensions, change on resize
var nw = img.naturalWidth, nh = img.naturalHeight;
// dimensions of the original image file

var proportion = nh / nw; // proportion < 1 :
'portrait', < 1 : 'landscape'

Since width / height change on resize you have to update them in the moment you need them.

Categories : Javascript

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Flexbox child not reading height/width of parent
The .body parent of .super-thing is display: flex so it's children don't inherit it's height or width if they don't have flex properties. The power of flex compels you! Set flex: 1 on .super-thing so it grows and shrinks with a 1% margin to create a gap. There is no need for a width or height. .super-thing { background-color: white; margin: 1%; box-shadow: 2px 1px 1px #000; flex: 1; }

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Ways to set div width dynamic width and height
I think this is you want.Just create layout like side menu and container as I created below check the fiddle too. This is an example for your scenario html, body{ height:100%; min-height:100%; } body{ position:relative; margin:0px; } header{ position:relative; height:50px; background:#f00; } aside{ position:absolute; top:50px; border-right:2px solid #ccc; left

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How to get exact width and height of the div
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HTML5: Canvas width and height
Almost all size parameters in HTML5 are going to be in pixels. If you're experiencing issues drawing the canvas with your current code, try taking out the self-closing block at the end: <canvas id="myCanvas" width="200" height="300"></canvas> You may also consider viewing the properties of the canvas element as defined by W3 Schools:

Categories : HTML
Getting width and height from loaded bitmap
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Categories : Android
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