window.onload=()?{
????waterfall(,);
}
waterfall(parent,?box)?{
????oParent=document.getElementById(parent);
????getByClass(oParent,box)
}
getByClass(parent,clsName){
????boxArr=Array(),
????????oElements=parent.getElementsByTagName();
????(i=;i<oElements.length;i++){
????????(oElements[i].className==clsName){
????????????boxArr.push(oElements[i]);
????????}
????}
????boxArr;
}? ?用老師源代碼還是錯(cuò)的 求大神指導(dǎo)一下
getElementsByTagName' of null 報(bào)錯(cuò)
慕數(shù)據(jù)1201694
2017-01-16 11:37:36
