<html>
<head>
<title> Form Validation </title>
<style type="text/css">
fieldset { width: 280px; padding: 6px; }
label { float: left; width: 100px; font: 12px Arial; padding: 5px; }
input { margin-bottom: 5px; }
</style>
</head>
<body>
<form id="inputForm" onsubmit="return validateForm();" action="#">
<fieldset>
<label>First Name:</label><input type="text" name="first_name" /><br />
<label>Surname:</label><input type="text" name="surname" /><br />
<label>Postcode:</label><input type="text" name="postcode" /><br />
<label>Email:</label><input type="text" name="email" /><br />
<input type="submit" name="submit" value="Send form" />
<input type="reset" name="reset" value="Reset" />
</fieldset>
</form>
<script type="text/javascript">
function validateForm() {
var form = document.forms['inputForm'];
var formats = {
First_name: /^[a-z]+[\-`\s]?[a-z]+$/i,
Surname: /^[a-z]+[\-`\S]?[a-z]+$/i,
Postcode: /^\d{4}$/,
Email:/^w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/
};
var elCount = form.elements.length;
for(var i = 0; i <elCount; i++) {
var field = form.elements[i];
if(field.type == 'text') {
if(!formats[field.name].test(field.value)) {
alert('Invalid '+field.name.replace('_', ' '));
field.focus();
return false;
}
}
}
}
</script>
</body>
</html>
嘿家伙试图弄清楚为什么代码给我一个错误:underfinded formats[fields.Name] 但它已被定义。它只是一个简单的形式,所以我不确定我做错了什么。很抱歉这个基本问题,但我已经多次查看它并且看不到它。再次欢呼。