javascript program error

[ravi951]

hi all,
i have created one program using javascript.i have written using javascript functions..
can u tell me what is the problem with my program i have saved it as messages.js,but the script is not executing can u tell me what went wrong.....
below is my javascript program.....

// form validation function //
 function checkName(form)
{
  var eobj=document.getElementById('realnameerror');
  var sRealName = form.realname.value;
  var oRE = /^[a-z0-9]+[_.-]?[a-z0-9]+$/i;
  var error=false;
  eobj.innerHTML='';
  if (sRealName == '') 
  {
   error='Error: Username cannot be blank!';
  }
  else if (sRealName.length < 4) 
  {
    error="UserName should be atleast 4 characters long";
  }
  else if (!oRE.test(sRealName))
  {
   error="Incorrect format.";
  }
  if (error)
{
   if (hasFocus == false) 
   {
     form.realname.focus();
     hasFocus = true;
   } 
   eobj.innerHTML=error;
   return false;
  }
  return true;
 }

function checkEmail(form)          /* for email validation */
{
 var eobj=document.getElementById('emailerror');
 eobj.innerHTML='';
 var error = false;
  if (form.email.value.length == 0) 
  {
    error = 'Please enter email.';
  } else if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(form.email.value))
 {
  return true;
 } else 
 {
   error = 'Invalid E-mail Address! Please re-enter.';
 }
 if (error) 
{
   eobj.innerHTML=error;
   if (!hasFocus) 
   {
     form.email.focus();
     hasFocus = true;
   } 
   return false;
 }

 return true;
}

function validatePwd(form)          /* password & retype-password verification */
{       
 var eobj1=document.getElementById('passworderror');
 var eobj2=document.getElementById('password2error');
 var minLength=6;
 var invalid=' ';
 var pw1=form.password.value;
 var pw2=form.password2.value;
 var error=false;
 eobj1.innerHTML='';
 eobj2.innerHTML='';
 if (pw1.length<1)
 {
  error='Please enter your password.';
 }
 else if (pw1.length < minLength)
 {
  error='Your password must be at least ' + minLength + ' characters long. Try again.';
 }
 else if (pw1.indexOf(invalid) > -1)
 {
  error='Sorry, spaces are not allowed.';
 } 
else if (pw2.length == 0) 
{
  error='Please retype password.';
   if (!hasFocus) 
   {
     form.password2.focus();
     hasFocus = true;
   } 
  eobj2.innerHTML=error;
  return false;
 }
 if (error)
 {
   if (!hasFocus) 
   {
     form.password.focus();
     hasFocus = true;
   } 
    eobj1.innerHTML=error;
  return false;
 }
 if (pw1 != pw2)
 {
  eobj2.innerHTML=' passwords not matching.Please re-enter your password.';
   if (!hasFocus) 
   {
     form.password2.focus();
     hasFocus = true;
   } 
  return false;
 }
 return true;
}

function validPhone(form)              /* phone no validation */
{          
 var eobj=document.getElementById('phonenoerror');
 var valid = '0123456789';
 var phone = form.phoneno.value;
 var error=false;
 var i=0;
 var temp;
 eobj.innerHTML='';
 if (phone == '')
 {
  error='This field is required. Please enter phone number';
 }
 else if (!phone.length > 1 || phone.length < 10)
 {
  error='Invalid phone number length! Please try again.';
 }
 else 
 {
  for (i=0; i < phone.length; i++)
 {
   temp = '' + phone.substring(i, i + 1);
   if (valid.indexOf(temp) == -1)
    {
    error='Invalid characters in your phone. Please try again.';
    }
  }
 }
 if (error)
 {
   if (!hasFocus) 
   {
     form.phoneno.focus();
     hasFocus = true;
   } 
  eobj.innerHTML=error;
  return false;
 }
 return true;
}

function validate() 
 {
  hasFocus = false;
 var form = document.forms['form'];
 var ary=[checkName,checkEmail,validatePwd,validPhone];
 var rtn=true;
 var z0=0;
 for (var z0=0;z0<ary.length;z0++)
{
  if (!ary[z0](form))
  {
    rtn=false;
  }
 }
 return rtn;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 3;
var MSGHIDE = 3;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
  var msg;
  var msgcontent;
  if(!document.getElementById('msg')) {
    msg = document.createElement('div');
    msg.id = 'msg';
    msgcontent = document.createElement('div');
    msgcontent.id = 'msgcontent';
    document.body.appendChild(msg);
    msg.appendChild(msgcontent);
    msg.style.filter = 'alpha(opacity=0)';
    msg.style.opacity = 0;
    msg.alpha = 0;
  } else {
    msg = document.getElementById('msg');
    msgcontent = document.getElementById('msgcontent');
  }
  msgcontent.innerHTML = string;
  msg.style.display = 'block';
  var msgheight = msg.offsetHeight;
  var targetdiv = document.getElementById(target);
  targetdiv.focus();
  var targetheight = targetdiv.offsetHeight;
  var targetwidth = targetdiv.offsetWidth;
  var topposition = topPosition(targetdiv) - ((msgheight - targetheight) / 2);
  var leftposition = leftPosition(targetdiv) + targetwidth + MSGOFFSET;
  msg.style.top = topposition + 'px';
  msg.style.left = leftposition + 'px';
  clearInterval(msg.timer);
  msg.timer = setInterval("fadeMsg(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsg()", (autohide * 1000));
}

// hide the form alert //
function hideMsg(msg) {
  var msg = document.getElementById('msg');
  if(!msg.timer) {
    msg.timer = setInterval("fadeMsg(0)", MSGTIMER);
  }
}

// face the message box //
function fadeMsg(flag) {
  if(flag == null) {
    flag = 1;
  }
  var msg = document.getElementById('msg');
  var value;
  if(flag == 1) {
    value = msg.alpha + MSGSPEED;
  } else {
    value = msg.alpha - MSGSPEED;
  }
  msg.alpha = value;
  msg.style.opacity = (value / 100);
  msg.style.filter = 'alpha(opacity=' + value + ')';
  if(value >= 99) {
    clearInterval(msg.timer);
    msg.timer = null;
  } else if(value <= 1) {
    msg.style.display = "none";
    clearInterval(msg.timer);
  }
}

// calculate the position of the element in relation to the left of the browser //
function leftPosition(target) {
  var left = 0;
  if(target.offsetParent) {
    while(1) {
      left += target.offsetLeft;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.x) {
    left += target.x;
  }
  return left;
}

// calculate the position of the element in relation to the top of the browser window //
function topPosition(target) {
  var top = 0;
  if(target.offsetParent) {
    while(1) {
      top += target.offsetTop;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.y) {
    top += target.y;
  }
  return top;
}
// preload the arrow //
if(document.images) {
  arrow = new Image(7,80); 
  arrow.src = "images/msg_arrow.gif"; 
}

[JShor]

You're going to need to post more than just your js file for us to diagnose the problem. Please include the HTML that is instantiating this script.

How are you calling these functions, and what exactly is the nature of the problem that you're experiencing?

[ravi951]

k.i have written all i have used.login is the page from where we are going to log in the form......
whether do i need jquery-1.2.1.min.js for this html.....
below is my HTML page
saved as login.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Dynamic Inline Form Validation Demo</title>
<link rel="stylesheet" type="text/css" href="messages.css" />
<script type="text/javascript" src="messages.js"></script>
</head>
<body>
<div id="wrapper">
  <form name="form" id="form" class="form" action="success.html" onsubmit="return validate(this)" method="post">
    <label for="name">User Name:</label>
    <input type="text" name="name" id="name" />
    
	<label for="email">Email Id:</label>
    <input type="text" name="email" id="email" />
    
	<label for="password">Password:</label>
    <input type="text" name="password" id="password" />
	
    <label for="repassword">Retype Password:</label>
    <input type="text" name="repassword" id="repassword" />
	
	<label for="phoneno">Phone no:</label>
    <input type="text" name="phoneno" id="phoneno" />
	
	<input type="submit" value="Submit" class="submit" />
  </form>
</div>
</body>
</html>

This is my CSS code for styling

* 
{
 margin:0; 
 padding:0;
}

body 
{
  font:12px Verdana, Arial, Helvetica, sans-serif; 
  color:black;
}

#wrapper 
{
  width:600px; 
  margin:50px auto;
}

.form 
{
  float:left; 
  padding:10px 10px 10px 10px; 
  background:lightblue; 
  border:2px solid white;
}

.form label 
{
  float:left; 
  width:100px; 
  padding:10px 10px 0 10px; 
  font-weight:bold;
  clear:left;
}

.form select 
{
  float:left; 
  width:146px; 
  margin-top:10px;
}

.form input 
{
  float:left; 
  margin-top:10px;
}

.form .submit 
{
  clear:both;
}

#msg 
{
  display:none; 
  position:absolute; 
  z-index:200; 
  background:url(images/msg_arrow.gif) left center no-repeat; 
  padding-left:7px;
}

#msgcontent 
{
  display:block; 
  background:#f3e6e6; 
  border:2px solid red; 
  border-left:none; 
  padding:5px; 
  min-width:150px; 
  max-width:250px;
}

below is my HTML code for success.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Dynamic Inline Form Validation Demo</title>
<link rel="stylesheet" type="text/css" href="messages.css" />
<script type="text/javascript" src="messages.js"></script>
</head>
<body>
<div id="wrapper">
  Successfully submitted!
</div>
</body>
</html>