预读<img>中的图片,获得图片宽高
js实现:
var image = loadImage($('#form\\:imagefront').attr('src'));
//loadImage('图片的src');
alert(image.width+" "+image.height);
function loadImage(obj){
var image = new Image();
image.src = obj;
return image;
}
-----------------------------------------------------------------code:春天的熊