JS dynamically adds and removes the sample code for the Option object of in the select
- 2020-03-30 01:00:12
- OfStack
As follows:
//Dynamically deletes all options: & NBSP; in the select;
function delAllOptions(){
document.getElementById("user_dm").options.length=0;
}
//Dynamically deletes an option in the select: & NBSP;
function delOneOption(index){
document.getElementById("user_dm").options.remove(index);
}
//Dynamically add option in select :& NBSP;
function addOneOption(){
//document.getElementById("user_dm").options.add(new Option(2,"mytest"));
var selectObj=document.getElementById("user_dm");
alert(selectObj.length);
selectObj.options[selectObj.length] = new Option("mytest", "2");
}