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var elems ,//
i,//
length;
elems=document.getElementsByTagName("div");
length=elems.length;
for(i=0;i<length;i++){
console.log(elems[i].innerHTML);
}
1.最好用length把elems.length缓存起来,elems是一个HTMLCollection集合,如果不缓存每次访问都要遍历一次
2.要用源码,脱离框架吧。