Question

在js中如何把文本框的值传到下拉列表框

Answer 1

so easy
取文本框值，再赋值给下拉列表
var myval=document.getElementById("port11").value;
var myselect=document.getElementById("mySelect");
for(var i=1;i<myselect.options.length;i++){
if(myselect.options[i].value==myval)
{
myselect.options[i].selected = true;
break;
}
}