<HTML><HEAD><script>
function f1()
{
obj=document.all.txt1
if(obj.value.length>0)
{
document.all.SELECT1.add(new Option(obj.value,obj.value));
}
obj.value="";
}
</script>
</HEAD>
<BODY>
<input type=text id="txt1">
<input type="button" onclick=f1() value="增加">
<br>
<select id=SELECT1 size=5 width=200> </select></BODY></HTML>
function f1()
{
obj=document.all.txt1
if(obj.value.length>0)
{
document.all.SELECT1.add(new Option(obj.value,obj.value));
}
obj.value="";
}
</script>
</HEAD>
<BODY>
<input type=text id="txt1">
<input type="button" onclick=f1() value="增加">
<br>
<select id=SELECT1 size=5 width=200> </select></BODY></HTML>
解决方案 »
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