Question

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Javascript – Function to return width/height of remote image from url

Is it possible to get width and height by just knowing the images location with js? The actual picture isn’t loaded onto the DOM. I have been trying this with jQuery but with no luck yet.

var img = $('<img>').attr('src', 'images/logo.png');
console.log($(img).width());

returns 0.

Answer 1

No, the image doesn’t need to be in the DOM.

var img = new Image();
img.onload = function(){
        console.log(this.width);
    };
img.src="images/logo.png";

But you have to load it before knowing its dimensions

(note the src after the onload function)

here is a jsfiddle : http://jsfiddle.net/fGUyz/2/

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