js写的鼠标覆盖，更改图片，为什么只在chrome中有效呀，360跟搜狗都没反应？

Question

varimgHoverReplaceSrc={init:function(sel){this.sel=sel||"img";this.imgList=document.querySelectorAll(sel);this.work();},work:function(){var_this=this;this.imgList.forEach(function(item){item.addEventListener("mouseenter",function(){_this.changeSrc(item)});item.addEventListener("mouseleave",function(){_this.changeSrc(item)});});},changeSrc:function(item){if(item.getAttribute('data-src')){vartmpSrc=item.src;item.src=item.getAttribute('data-src');item.setAttribute('data-src',tmpSrc);}}}imgHoverReplaceSrc.init("img");

Answer 1

IE11报错：
SCRIPT438:对象不支持“forEach”属性或方法
用循环替换forEach是一个可行的解决方案:
for(leti=0;i<_this.imgList.length;i++){
letimg=_this.imgList[i];
img.addEventListener("mouseenter",function(){
_this.changeSrc(img);
});
img.addEventListener("mouseleave",function(){
_this.changeSrc(img);
})
}