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分享错在哪里呢？
<script language="JavaScript" type="text/JavaScript">
function go(){
//if (form1.test.value==1){
alert (form1.test.value)
//}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">alfred</option>
<option value="2">nomad</option>
</SELECT>
</form>
为什么会说缺少对象啊？
还有，我想要做用一个下拉框控制2个下拉框的js怎么写啊？
有a b c 三个下拉框，a下拉框里有两个选项1、2。我想选1的时候下拉框b可以操作，c暗掉。选2的时候反过来。请问该怎么做呢？
谢谢！
function go(){
//if (form1.test.value==1){
alert (form1.test.value)
//}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">alfred</option>
<option value="2">nomad</option>
</SELECT>
</form>
为什么会说缺少对象啊？
还有，我想要做用一个下拉框控制2个下拉框的js怎么写啊？
有a b c 三个下拉框，a下拉框里有两个选项1、2。我想选1的时候下拉框b可以操作，c暗掉。选2的时候反过来。请问该怎么做呢？
谢谢！
...全文
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Magicd 2003-09-16
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非常感谢各位！
zhangking 2003-09-15
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form1.test.value 错误！ ==》
form1.test.options[form1.test.selectedIndex].text
form1.test.options[form1.test.selectedIndex].text
zhaoweiwei 2003-09-15
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try this:
<script language="JavaScript" type="text/JavaScript">
function go(){
if (form1.test.value==1){
form1.d2.disabled=false
form1.d3.disabled=true
}
else if(form1.test.value==2)
{
form1.d3.disabled=false
form1.d2.disabled=true
}
}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option selected>please select</option>
<option value="1">1</option>
<option value="2">2</option>
</SELECT>
<select size="1" name="d2">
<option>231</option>
<option>321312</option>
</select>
<select size="1" name="d3">
<option>312321321</option>
<option>312312312</option>
<option>asddasd</option>
</select></form>
</body>
<script language="JavaScript" type="text/JavaScript">
function go(){
if (form1.test.value==1){
form1.d2.disabled=false
form1.d3.disabled=true
}
else if(form1.test.value==2)
{
form1.d3.disabled=false
form1.d2.disabled=true
}
}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option selected>please select</option>
<option value="1">1</option>
<option value="2">2</option>
</SELECT>
<select size="1" name="d2">
<option>231</option>
<option>321312</option>
</select>
<select size="1" name="d3">
<option>312321321</option>
<option>312312312</option>
<option>asddasd</option>
</select></form>
</body>
zhaoweiwei 2003-09-15
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<script language="JavaScript" type="text/JavaScript">
function go(){
if (form1.test.value==2){
alert (form1.test.value)
}
}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">1</option>
<option value="2">2</option>
</SELECT>
</form>
</body>
function go(){
if (form1.test.value==2){
alert (form1.test.value)
}
}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">1</option>
<option value="2">2</option>
</SELECT>
</form>
</body>
jamlu 2003-09-15
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<script language="JavaScript" type="text/JavaScript">
function go(){
//if (form1.test.value==1){
alert (form1.test.options[0].value)
//}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">alfred</option>
<option value="2">nomad</option>
</SELECT>
</form>
function go(){
//if (form1.test.value==1){
alert (form1.test.options[0].value)
//}
</script>
<BODY>
<form name="form1" method="post" action="test.php">
<SELECT NAME="test" onchange="go()">
<option value="1">alfred</option>
<option value="2">nomad</option>
</SELECT>
</form>
jiaminxy 2003-09-15
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<script language="JavaScript" type="text/JavaScript">
function go(){
if (form1.test.selected==1){
alert ("1")
}
</script>
function go(){
if (form1.test.selected==1){
alert ("1")
}
</script>
yzwxjun 2003-09-15
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