How to get image size (height & width) using JavaScript?

Question

Are there any JavaScript or jQuery APIs or methods to get the dimensions of an image on the page?

Answer 1

var imgSrc, imgW, imgH;
function myFunction(image){
    var img = new Image();
    img.src = image;
    img.onload = function() {   
        return {
            src:image,
            width:this.width,
            height:this.height};
        }
    return img;
}
var x = myFunction('http://www.google.com/intl/en_ALL/images/logo.gif');
    //Waiting for the image loaded. Otherwise, system returned 0 as both width and height.
x.addEventListener('load',function(){
    imgSrc = x.src;
    imgW = x.width;
    imgH = x.height;
});
x.addEventListener('load',function(){
    console.log(imgW+'x'+imgH);//276x110
});
console.log(imgW);//undefined.
console.log(imgH);//undefined.
console.log(imgSrc);//undefined.

This is my method, hope this helpful. :)