本文介绍了在PHP中简单验证,但它不打电话,请帮助我的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
<html>
<head>
<script>
function validateForm()
{
var x = document.forms["myform"]["txtname"].value;
if (x == null || x=="") {
aleart ("please enter the name");
return false;
}
}
</script>
</head>
<body>
<form name="myform" action="demo.php">
Name
<input type ="text" name= "txtname"><br />
<input type="submit" value ="Submit">
</form>
</body>
</html>
推荐答案
alert
不是
aleart
接下来,你还没有调用validateForm()函数
Next, you have not called the validateForm() function at all
<form name="myform" action="#" onSubmit="return validateForm();">
<html>
<head>
<script>
function validateForm()
{
var x = document.forms["myform"]["txtname"].value;
if (x == null || x=="") {
alert ("please enter the name");
return false;
}
}
</script>
</head>
<body>
<form name="myform" action="demo.php" onSubmit="return validateForm();">
Name
<input type ="text" name= "txtname"><br />
<input type="submit" value ="Submit">
</form>
</body>
</html>
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