<script language="JavaScript1.1">
function test(tt)
{
if(tt=='大于')
{
form1.max.value='';
form1.max.readonly=true;
}
if(tt=='小于')
{
form1.min.value='';
form1.min.readonly=true;
}
}
</script>
</head><body>
<form name="form1" method="post" action="">
<input name="min" type="text" id="min">
<select name="select" onChange="test(this.value)">
<option value="大于" selected>大于</option>
<option value="小于">小于</option>
<option value="介于">介于</option>
</select>
<input name="max" type="text" id="max">
</form>
function test(tt)
{
if(tt=='大于')
{
form1.max.value='';
form1.max.readonly=true;
}
if(tt=='小于')
{
form1.min.value='';
form1.min.readonly=true;
}
}
</script>
</head><body>
<form name="form1" method="post" action="">
<input name="min" type="text" id="min">
<select name="select" onChange="test(this.value)">
<option value="大于" selected>大于</option>
<option value="小于">小于</option>
<option value="介于">介于</option>
</select>
<input name="max" type="text" id="max">
</form>
还是能输东西我想让文本框变灰是用这行么?
ReadOnly
readOnly都不行:(怎么才能变灰啊
form1.max.diaabled=true;
form1.max.style.backgroundColor="#DEDEDE";
//手动变灰色