js使用for循环与innerHTML获取选中tr下td值

function getParentEl (el, tagName) {
if (!el) return el;

do {
el = el.parentNode;
} while(el && el.tagName !== tagName);

return el;
}

function temp(){
//得到选中row的value值
var temp=document.getElementsByName('id');
for(var i=0;i<temp.length;i++){
if(temp[i].checked==true){
edit=temp[i].value;
var tr = getParentEl(temp[i], 'TR');
var tds = tr.cells;
for (var j = 0; j < tds.length; j++) {
var tdInner = tds[j].innerHTML;
alert(tdInner);
}
}
}
}