所以我的。php文件以前是一个。html页面，但是我想在这个文件中添加一个会话，并使用javascript来验证我的表单。但是当我添加标签时，什么也没发生。当我的文件是。html时，它工作得很好…下面是我到目前为止的代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<?php
session_start();
?>
<html>
<html>
<head>
<title>Hompage</title>
<script type="text/javascript" src="my_js.js"></script>
</head>
<body style = "margin-left:5%;">
<form method = "post" id = "Form1" action = "my_js.js">
<b>Login:</b>
<br/>
<br/>
User Name:      
<input type="text" name="uname" id ="uname"/>
<br/>
<br/>
Password:      
<input type="text" name="pwd" id ="pwd"/>
<br/>
<br/>
<input type ="button" id="Login" value ="Login" onclick = "validate();"/>
</form>
<br/><br/>
<hr/>
<br/><br/>
<form method = "post" name = "Form2" id = "Form2" action="register_add.php">
<b>Register:</b>
<br/>
<br/>
<span style = "color: red;">*</span> First Name:     
<input type="text" name="fname" id ="fname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Last Name:      
<input type="text" name="lname" id ="lname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Date of Birth:      
<input type = "text" name = "dob" id ="y" value = "yyyy/mm/dd">
<br/>
<br/>
<span style = "color: red;">*</span> User Name:      
<input type="text" name="uname" id ="uname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Password:      
<input type="password" name="pwd" id ="pwd"/>
<br/>
<br/>
<input type ="Submit" id="Register" value ="Register"/>
</form>
</body>
</html>
和我的。js文件:
// Login Form Validation
function validate(){
var x=document.forms["Form1"]["uname"].value;
var y=document.forms["Form1"]["pwd"].value;
if (x==null || x=="" || uname == null){
//alert("User name must be filled out");
document.getElementById('para1').innerHTML = "User Name field must be filled out";
return false;
}
if (y==null || y=="" || pwd==null){
document.getElementById('para1').innerHTML = "Password field must be filled out";
return false;
}
else{
document.getElementById('Form1').innerHTML="User Name: " + x + "nPassword: " + y;
}
// Registration Form Validation
var a=document.forms["Form2"]["fname"].value;
var b=document.forms["Form2"]["lname"].value;
var c=document.forms["Form2"]["m"].value;
var d=document.forms["Form2"]["d"].value;
var e=document.forms["Form2"]["y"].value;
var f=document.forms["Form2"]["uname"].value;
var g=document.forms["Form2"]["pwd"].value;
if (var==null || var==""){
document.getElementById('para2').innerHTML = "All field with '*' must be filled out";
return false;
}
else{
document.getElementById('Form2').innerHTML="First Name: " + a + "nLast Name: " + b +"nDate of Birth: " + m + d + y + "nUsername: " + uname + "nPassword: " + pwd;
}
}
看来你的javascript有一些错误。记得使用开发工具(chrome/IE中的F12)并检查控制台。
更新后的代码和.js如下…我所做的是:
-
删除所有的var =，因为它们在我的端抛出错误。
-
您的登录和注册的错误消息(id="para1"和div id="Para2")没有在页面上的元素，所以我添加了它们。
-
我完成了注册测试代码(一些表单元素，其中错过命名和抛出错误…注释添加到JS第21行)。
你要做的是分开这些方法(ValidateLogin()和validaterregistration())或使它们更通用通过循环通过表单变量检查所需的属性可能?
工作代码:
HTML:<html>
<head>
<title>Hompage</title>
<script type="text/javascript" src="my_js.js"></script>
</head>
<?php
session_start();
?>
<body style = "margin-left:5%;">
<form method = "post" id = "Form1" action = "my_js.js">
<b>Login:</b>
<br/>
<br/>
User Name:      
<input type="text" name="uname" id ="uname"/>
<br/>
<br/>
Password:      
<input type="text" name="pwd" id ="pwd"/>
<div id="para1"></div>
<br/>
<br/>
<input type ="button" id="Login" value ="Login" onclick = "validate();"/>
</form>
<br/>
<br/>
<hr/>
<br/>
<br/>
<form method = "post" name = "Form2" id = "Form2" action="register_add.php" >
<b>Register:</b>
<br/>
<br/>
<span style = "color: red;">*</span> First Name:     
<input type="text" name="fname" id ="fname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Last Name:      
<input type="text" name="lname" id ="lname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Date of Birth:      
<input type = "text" name = "dob" id ="y" value = "yyyy/mm/dd">
<br/>
<br/>
<span style = "color: red;">*</span> User Name:      
<input type="text" name="uname" id ="uname"/>
<br/>
<br/>
<span style = "color: red;">*</span> Password:      
<input type="password" name="pwd" id ="pwd"/>
<br/>
<br/>
<div id="para2"></div>
<input type ="button" id="Register" value ="Register" onclick = "validate();"/>
</form>
</body>
</html>
JS脚本:
function validate() {
x = document.forms["Form1"]["uname"].value;
y = document.forms["Form1"]["pwd"].value;
if (x == null || x == "" || uname == null) {
//alert("User name must be filled out");
document.getElementById('para1').innerHTML = "User Name field must be filled out";
return false;
}
if (y == null || y == "" || pwd == null) {
document.getElementById('para1').innerHTML = "Password field must be filled out";
return false;
} else {
document.getElementById('Form1').innerHTML = "User Name: " + x + "nPassword: " + y;
}
// Registration Form Validation
a = document.forms["Form2"]["fname"].value;
b = document.forms["Form2"]["lname"].value;
dob = document.forms["Form2"]["dob"].value;
///These values do not exist in the form...commenting them out
//c=document.forms["Form2"]["m"].value;
//d=document.forms["Form2"]["d"].value;
//e=document.forms["Form2"]["y"].value;
f = document.forms["Form2"]["uname"].value;
g = document.forms["Form2"]["pwd"].value;
if ((a == null || a == "") || (b == null || b == "") || (dob == null || dob == "") || (f == null || f == "") || (g == null || g == "")) {
document.getElementById('para2').innerHTML = "All field with '*' must be filled out";
return false;
} else {
document.getElementById('Form2').innerHTML = "First Name: " + a + "nLast Name: " + b + "nDate of Birth: " + m + d + y + "nUsername: " + uname + "nPassword: " + pwd;
}
}
你必须把
<?php
session_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">