这个实例是验证提交事件的。但是却不出确认对话框,为什么啊?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Submit.html</title>
<script type="text/javascript">
function checkForm()
{
if(confirm("你确认提交表单吗"))
return true;
}
else
{
return false;
}
}
</script>
</head>
<body>
<form name="test" onsubmit="javascript:return checkForm();">
<input type="text" name="username" value=""/>
<br/>
<input type="submit" name="sub" value="提交表单"/>
</form>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Submit.html</title>
<script type="text/javascript">
function checkForm()
{
if(confirm("你确认提交表单吗"))
return true;
}
else
{
return false;
}
}
</script>
</head>
<body>
<form name="test" onsubmit="javascript:return checkForm();">
<input type="text" name="username" value=""/>
<br/>
<input type="submit" name="sub" value="提交表单"/>
</form>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Submit.html </title> <script type="text/javascript">
function checkForm()
{
if(confirm("你确认提交表单吗"))
{ // 楼主少这半个大括号
return true;
}
else
{
return false;
}
}
</script>
</head>
<body>
// 这里onsubmit的写法
<form name="test" onsubmit="return checkForm();">
<input type="text" name="username" value=""/>
<br/>
<input type="submit" name="sub" value="提交表单"/>
</form>
</body>
</html>