function getByClass(oParent,sClass){
if(oParent.getElementsByClassName){
return oParent.getElementsByClassName(sClass);
}else{//IE低版本
var aElt = oParent.getElementsByTagName("*");
var arr = [];
for(var i = 0;i<aElt[i].className.split(' ');
if(findInArray(sClass,arr2)){
arr.push(aElt[i]);
}
}
return arr;
}
}
//正则版
function getByClass(oParent,sClass){
if(oParent.getElementsByClassName){
return oParent.getElementsByClassName(sClass);
}else{
var tagArr = oParent.getElementsByTagName('*');
var tagLen = tagArr.length;
var arr = [];
var re = new RegExp('\\b'+sClass+'\\b');
for(var i = 0;i < tagLen;i++){
if(re.test(tagArr[i].className)){
arr.push(tagArr[i]);
}
}
return arr;
}
}
