为什么我得出图片的长宽都为null?
loadPicSize:function(sourceSrc){
console.log(sourceSrc);
var self =this;
this.preLoadImg(sourceSrc,function(){
self.popupPic.attr("src",sourceSrc);
console.log("self.popupPic:"+self.popupPic);
var picWidth =self.popupPic.width();
var picHeight=self.popupPic.height();
console.log("picWidth:"+picWidth);
console.log("picHeight:"+picHeight);
});
},
preLoadImg:function(src,callback){
var img=new Image();
if(!!window.ActiveXObject){
img.onreadystatechange=function(){
if (this.readyState=="complete") {
callback();
};
};
}else {
img.onload=function(){
callback();
};
};
img.src=src;
},代码如上，报错如下
这个问题卡了好久求解答！
