JavaScript如何删除动态添加的OPTGROUP 急!急!急!
cnt = document.all.sel.children.length
for(i=cnt-1;i>=0;i--){
if(document.all.sel.children[i].attributes["label"].value !=""){
nies.label = document.all.sel.children[i]
document.all.sel.removeChild[nies]
}
}
这样用 removeChild 删除不了?