function check13() {
var obj = document.getElementById("备注二"); //定位id
var index = obj.selectedIndex; // 选中索引
var value = obj.options[index].value; // 选中值
if(value == null || value == "" || value == undefined){
document.getElementById('进货退货备注').disabled="disabled"
}
else{
document.getElementById('进货退货备注').disabled=false
}
}
为什么有值了不还是锁起的
[此贴子已经被作者于2022/9/14 19:08:17编辑过]