<html><head><title>New Page 3</title>
<script>
function check()
{
if(f1.c1.checked||f1.c2.checked||f1.c3.checked)
{
alert("提交成功")
}
else
{
alert("请您至少选择一项")
}}</script>
</head><body><form name="f1" method="POST" action=""> <p><input type="checkbox" name="c1" value="ON"> <input type="checkbox" name="c2" value="ON">
<input type="checkbox" name="c3" value="ON"></p>
<p> </p>
<p><input type="submit" value="提交" name="B1" onClick="check()">
<input type="reset" value="全部重写" name="B2"></p>
</form></body></html>
<script>
function check()
{
if(f1.c1.checked||f1.c2.checked||f1.c3.checked)
{
alert("提交成功")
}
else
{
alert("请您至少选择一项")
}}</script>
</head><body><form name="f1" method="POST" action=""> <p><input type="checkbox" name="c1" value="ON"> <input type="checkbox" name="c2" value="ON">
<input type="checkbox" name="c3" value="ON"></p>
<p> </p>
<p><input type="submit" value="提交" name="B1" onClick="check()">
<input type="reset" value="全部重写" name="B2"></p>
</form></body></html>
解决方案 »
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