<script type="text/javascript">
function check(n,mail,msg)
{
if(name.toLowerCase()== "")
{
alert("Please Enter your name.");
document.getElementById("Name").select();
document.getElementById("Name").focus();
return false;
}
else if(lname.toLowerCase()== "")
{
alert("Please Enter your email.")
document.getElementById("email").select();
document.getElementById("email").focus();
return false;
}
else if(ph == "")
{
alert("Please Enter your Contact Number.")
document.getElementById("message").focus();
return false;
}
return true;
}
================================================== =========
<form method="post" name="contact_form" action="contact-form-handler.php">
<p> Your Name:
<input type="text" name="name"></p>
<p>Email Address:
<input type="text" name="email"></p>
<p>Message:
<textarea name="message"></textarea></p>
================================================== =========
<input type="button" value="submit" onclick="return check(document.getElementById('name').value,document.getElementById('email').value,document.getElementById('message').value)" />
================================================== =========
我在 HTML 验证方面遇到问题，因为当我单击按钮时，没有执行任何验证。
最佳答案
相反..在表单上添加验证，如下所示:
<form method="post" name="contact_form" action="contact-form-handler.php"
onsubmit="return validateForm()">
这 100% 有效
关于javascript - HTML 表单验证问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22986708/