Function getImgWH

JiandanHero/JiandanHero.user.js:23–40

(img,callBack)

(function() {
    'use strict';
    var timer,tempImg=document.createElement("img"),getImgWH=function(img,callBack){
        if(timer)clearInterval(timer);
        tempImg.src="";
        tempImg.src=img.src;
        var check=function(){
            if(tempImg.width>0 || tempImg.height>0){
                if(timer)clearInterval(timer);
                callBack(tempImg.width,tempImg.height);
                return true;
            }else{
                return false;
            }
        };
        var geted=check();
        if(!geted){
            timer = setInterval(check,40);
        }
    };

    document.addEventListener("keyup", function(e) {
        if(/INPUT|TEXTAREA/.test(document.activeElement.tagName))return;