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JavaScript - Validate Individual Text Field Validation On My Form
I am Gururaj.
I have written a form in HTML which contains username,lastname,email,password and submit. I have written a javascript to validate this form [validate(username,lastname,email,password)]. On submit this javascript function will be called and hence form get validated. I am passing all the arguements(username,lastname,email and password) to the javascript function.. Is it possible to make me a code such that it should call an individual function for each field in the form.for ex:if i have not entered username, last name in the form and attempt to submit, only username arguement should be passed to the function as it comes first in the form. In other sense i want to validate individual text field validation of my form. So can anybody help me.It will be very needful to me. Similar Tutorials[ICODE] <html> <head> <title>ABS</title> <?php $j="dove"; ?> <script language="JavaScript" type="text/javascript"> <!-- function checkform ( form ) { if (form.Name.value == "") { alert( "Please enter your email address." ); form.Game.value="<?php echo $j;?>"; form.Name.focus(); return false ; } if (form.Game.value == "") { alert( "Please enter your game address." ); form.Game.focus(); return false ; } if (document.form.Shame[0].value== "") { alert( "Please enter your game address." ); form.Game.focus(); return false ; } return true ; } </script> </head> <body> <form name="form" action="Store_it.php" method="post" onSubmit="return checkform(this);"> <input type="text" name="Name" /> <input type="text" name="Game" /> <input type="text" name="Shame[]" /> <input type="text" name="Shame[]" /> <input type="text" name="Shame[]" /> <input name="submit" type="submit"> </form> </body> </html> [icode] I need to use the array's shame and just check if the third one is not empty. I have searched DOM and other stuff but i cannot get to the 2 element of the array shame. How do i check the value of the array. Hey all. I have a simple validation I need to do. I need to just make sure that a Checkbox is checked, and that a Text field has content. Sounds simple but I cannot find any thing that has a check and a text field. Here what I have. Can I modify this script to do this? A Checkbox MUST be checked and Text field MUST be filled out. This currently does the text field fine, but no Checkbox obviously. How can I add a checkbox validation to this? Thats it. Any help is appreciated. Code: <script type="text/javascript">
var textFields = ["digsig"];
function validateForm( )
{
var oops = ""; // must initialize this!
var form = document.sig;
for ( var t = 0; t < textFields.length; ++t )
{
var field = form[textFields[t]];
var value = field.value.replace(/^\s+/,"").replace(/\s+$/,""); // trim the input
if ( value.length < 1 )
{
oops += "You MUST enter your Digital Signature";
}
}
if ( oops != "" )
{
alert("ERROR:" + oops);
return false;
}
}
}
</script>
I've set up a mock registration form page so I can learn a bit about javascript's form validation. (newbie) I want to try to attempt to style the border of a form field green when the user enters the correct info into the form text field and red on all other fields if the user doesnt enter any info into them. When i test it, enter the right info into the username field, leave the others blank, and hit the submit button it styles the username field green ok but it doesnt make the next fields (password and so on) red. Could someone please explain what I am doing wrong? here is my code so far... Note: just for testing purposes I've put return false on everything so it displays a message when everythings ok. Code: ....
<script type="text/javascript">
window.onload = function() {
document.forms[0].username.focus();
}
function validate(form)
{
var form = document.getElementById("reg");
var e = document.getElementById("error");
e.style.background = "red";
for(var i = 0; i < form.elements.length; i++)
{
var el = form.elements[i];
if(el.type == "text" || el.type == "password")
{
if(el.value == "")
{
e.innerHTML = "Please fill in all fields!";
el.style.border = "1px solid red";
el.focus();
return false;
} else {
el.style.border = "1px solid green";
return false;
}
}
}
var un = form.username;
un.value = un.value.replace(/^\s+|\s+$/g,"");
if((un.value.length < 3)|| (/[^a-z0-9\_]/gi.test(un.value)))
{
e.innerHTML = "Only letters,numbers and the underscore are allowed (no spaces) - 3-16 characters";
un.focus();
return false;
}
var pw = form.password;
pw.value = pw.value.replace(/^\s+|\s+$/g,"");
if((pw.value.length < 3) || (/[^a-z0-9]/gi.test(pw.value)))
{
e.innerHTML = "Only letters and numbers are allowed (no spaces) - 3-16 characters";
pw.focus();
return false;
}
e.innerHTML = "You filled in all the fields, well done!";
e.style.background = "green";
return false;
}
</script>
</head>
<body>
<div id="wrapper">
<div id="header">
<h1>My Cool Website</h1>
</div>
<div id="content">
<div class="padding">
<h2>Registration</h2>
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Duis ligula lorem, consequat eget, tristique nec, auctor quis, purus. Vivamus ut sem. Fusce aliquam nunc vitae purus. Aenean viverra malesuada libero. Fusce ac quam. Donec neque. Nunc venenatis enim nec quam. Cras faucibus, justo vel accumsan aliquam, tellus dui fringilla quam, in condimentum augue lorem non tellus. Pellentesque id arcu non sem placerat iaculis. Curabitur posuere, pede vitae lacinia accumsan, enim nibh elementum orci, ut volutpat eros sapien nec sapien. Suspendisse neque arcu, ultrices commodo, pellentesque sit amet, ultricies ut, ipsum. Mauris et eros eget erat dapibus mollis. Mauris laoreet posuere odio. Nam ipsum ligula, ullamcorper eu, fringilla at, lacinia ut, augue. Nullam nunc.</p>
<form id="reg" action="#" method="post" onsubmit="return validate(this)">
<div id="error"></div>
<div><label for="username">Username</label></div>
<div><input type="text" name="username" id="username" size="30" maxlength="16" /></div>
<div><label for="password">Password</label></div>
<div><input type="password" name="password" id="password" size="30" maxlength="16" /></div>
<div><label for="c_password">Confirm Password</label></div>
<div><input type="password" name="c_password" id="c_password" size="30" maxlength="16" /></div>
<div><label for="email">Email address</label></div>
<div><input type="text" name="email" id="email" size="30" maxlength="200" /></div>
<div><label for="c_email">Confirm Email address</label></div>
<div><input type="text" name="c_email" id="c_email" size="30" maxlength="200" /></div>
<div><label for="firstname">First name</label></div>
<div><input type="text" name="firstname" id="firstname" size="30" maxlength="100" /></div>
<div><label for="surname">Surname</label></div>
<div><input type="text" name="surname" id="surname" size="30" maxlength="100" /></div>
<div><label for="gender">Gender</label></div>
<div>
<div><input type="radio" name="gender" id="gender" value="m" checked="checked" />Male</div>
<div><input type="radio" name="gender" value="f" />Female</div>
</div>
<div><input type="submit" value="Register" name="submit" /></div>
</form>
</div>
</div>
<div id="footer">
<p>Copyright © 2009 My Cool Website</p>
</div>
</div>
</body>
</html>
I have a phone number field on my form that needs validation, but I'm not sure how to code this. I have the following function to validate a first name is entered and last name. The phone number field must match a 7 digit or 10 digit(with area code)phone number. I want to be able to include paranthese and/or hyphens for the valid phone number. function checkForm1() { if (document.forms[0].firstname.value.length == 0) { alert("You must put in a first name"); return false; } else if (document.forms[0].lastname.value.length == 0) { alert("You must put in a last name"); return false; } hiiii, im new to javascripts . Can anyone help me to know that a javascript which is validating a phone number accepts only digits but if the text field is left empty it should accept the entry as an empty entry.... plz share knowledge u will be more knowledgeable I'm only validating one (Consent) radio button with this code but i need to validate multiple different questions/buttons. Code: <script>
function getRBtnName(GrpName) {
var sel = document.getElementsByName(GrpName);
var fnd = -1;
var str = '';
for (var i=0; i<sel.length; i++) {
if (sel[i].checked == true) { str = sel[i].value; fnd = i; }
}
return fnd;
}
function checkForm() {
var chosen = getRBtnName('Consent');
if (chosen < 0) {
alert( "Please choose one answer when you are asked to select a number." );
return false;
} else { return true; }
}
</script>
<form action="congratulations_aff.php" method="post" name="congratulations_aff" onSubmit="return checkForm()">
<table border="0" cellspacing="1" cellpadding="0">
<tr>
<td colspan="3">I consent to providing my electronic signature.</p></td>
</tr>
<tr>
<td colspan="3" valign="top">
<input type="radio" name="Consent" value="Y" />
Yes
<input type="radio" name="Consent" value="N" />
No
<table border="0" cellspacing="1" cellpadding="0">
<tr>
<td>I consent to electronic receipt of my information reporting documentation.</td>
</tr>
<tr>
<td valign="top">
<input type="radio" name="Consent1099YesNo" value="Y" />
Yes
<input type="radio" name="Consent1099YesNo" value="N" />
No</td>
</tr>
<tr>
<td valign="top">
For tax purposes are you a U.S. citizen, U.S. resident, U.S. partnership, or U.S. corporation?
<input type="radio" name="USPersonYesNo" value="Y" />
Yes
<input type="radio" name="USPersonYesNo" value="N" />
No</tr>
</table>
<input type="submit" value="submit" value="Submit" />
</form>
Any help would be greatly appreciated. I am finishing up my Form page, and totally forgot to have a numeric only field. So I added it and I can't get it to work. I also am having issues throwing an error when you don't select at least one topping. And are these lines correct? Code: document.cookie = "toppings=" + encodeURIComponent(document.getElementsByName("toppings[]").value);
Code: document.cookie = "extra=" + encodeURIComponent(extra); Here is a link to the page hosted on my dropbox http://dl.dropbox.com/u/49211616/dw/...orderPage.html Javascript: Code: function validateOrder ()
{
var crustSelection = document.orderForm.crust.value;
var crustPrice; //Adds $1 for Deep DishParmesagn, and Sourdough
var count = 0; //Amount of Toppings Selected
var choice = ""; //Toppings Selected list
var x = ""; //Don't need for the Cookie
var extra = 0; //extra charge for toppings over 3
try{
var error = ""; // Initialize Var to store the error messages.
if(document.getElementById("delivery").checked != true &&
document.getElementById("takeout").checked != true)
{
error=error+"Order Type is required.\n"
}
if(document.getElementById("fname").value == "")
{
error = error + "First Name is required.\n";
}
if(document.getElementById("lname").value == "")
{
error = error + "Last Name is required.\n";
}
if(document.getElementById("address").value == "")
{
error = error + "Street address is required.\n";
}
if (isNaN(document.getElementById("quantity")))
{
error = error + "Enter Pizza Quantity in Numbers Only.\n";
}
if(document.getElementById("crust").value == "")
{
error = error + "Crust Type is required.\n";
}
if(document.getElementsByName("toppings").value == 0)
{
error = error + "Select at Least One Topping.\n";
}
if(error == "")
{
// save all the information in the cookie
document.cookie = "firstName=" + encodeURIComponent(document.getElementById("fname").value);
document.cookie = "lastName=" + encodeURIComponent(document.getElementById("lname").value);
document.cookie = "address=" + encodeURIComponent(document.getElementById("address").value);
document.cookie = "order=" + encodeURIComponent((document.getElementById("delivery").checked) ? "delivery" : "takeout");
document.cookie = "quantity=" + encodeURIComponent(document.getElementById("quantity").value);
document.cookie = "quantity=" + encodeURIComponent(document.getElementById("quantity").value);
document.cookie = "crust=" + encodeURIComponent(document.getElementById("crust").value);
document.cookie = "toppings=" + encodeURIComponent(document.getElementsByName("toppings[]").value);
alert("Order successfully Placed!");
}
else
{
alert(error);
}
}
catch(ex)
{
alert("An error occurred!.\n" + "Error Name : " + ex.name + "\nError Message : " + ex.message);
}
for (var i=1; i<11; i++)
{
x = document.orderForm['toppings' + i].value;
if (document.orderForm['toppings' + i].checked)
{
choice = choice + " " + x ;
count ++;
}
}
if (choice.length <= 0)
{
choice = choice + "NONE";
}
if (count > 3)
{
extra = (count - 3) * 1
}
document.cookie = "extra=" + encodeURIComponent(extra);
}
</script>
HTML: Code: <form name = "orderForm" onsubmit="validateOrder()">
<table width="600" border="0">
<tr>
<th scope="col" width="400" align="left"><b>First Name</b><br /><input type="text" id="fname" name="fname" size=30>
<br />
<br />
<b>Last Name</b><br />
<input type="text" id="lname" name="lname" size=30>
<br />
<br />
<b>Street Address</b><br />
<input type="text" id="address" name="address" size=30>
<br />
<br />
<input name="orderType" value="delivery" id="delivery" type="radio">Delivery</font>
<input name="orderType" value="takeOut" id="takeout" type="radio">Take Out</font></th>
<th scope="col" width="200" align="Left">
How Many Pizzas? <input type="text" id="quantity" name="quantity" size=5>
<br />
<br />
<select name="crust" id="crust">
<option selected value="false">Select Crust Type</option>
<option value="regular">Regular Crust</option>
<option value="thin">Thin Crust</option>
<option value="deep">Deep Dish</option>
<option value="Parmesagn">Parmesagn Cheese</option>
<option value="sourdough">Sourdough</option>
</select>
<br />
<br />
Select at Least One Topping:
<br />
<br />
<input name = "toppings1" type = "checkbox" value = "extraCheese"> Extra Cheese<br>
<input name = "toppings2" type = "checkbox" value = "sausage"> Sausage<br>
<input name = "toppings3" type = "checkbox" value = "pepperoni"> Pepperoni<br>
<input name = "toppings4" type = "checkbox" value = "bacon"> Bacon<br>
<input name = "toppings5" type = "checkbox" value = "canadianBacon"> Canadian Bacon<br>
<input name = "toppings6" type = "checkbox" value = "mushroom"> Mushroom<br>
<input name = "toppings7" type = "checkbox" value = "pineapple"> Pineapple<br>
<input name = "toppings8" type = "checkbox" value = "onion"> Onion<br>
<input name = "toppings9" type = "checkbox" value = "olive"> Olive<br>
<input name = "toppings10" type = "checkbox" value = "greenPepper"> Green Pepper<br></th>
</tr>
</table>
<input name="submit" type="submit" value="submit" /><input name="" type="reset" />
</form>
Hi all, Thanks for reading. I'm having an issue trying to accomplish the following - I have a text field (field1) already displayed on the HTML page. However, there's a link where you can add additional text fields to the page as well. When the link is clicked, the second text field is added successfully (field2), and when the link is clicked again, the third text field (field3) is added successfully. However, the third field does not add itself to the page, and the text for anything greater than a third field also isn't displayed after. This obviously means that my "fields" variable is not working right, so I'm wondering, would anyone be able to assist me to help me get that variable processing correctly? Code: <script language="javascript">
fields = 1;
function addMore() {
if (fields = 1) {
document.getElementById('addedMore').innerHTML = "<input type='text' name='field2' size='25' /> <span>Field 2.</span>";
fields = 2;
} else if (fields = 2) {
document.getElementById('addedMore').innerHTML = "<input type='text' name='field3' size='25' /> <span>Field 3.</span>";
fields = 3;
} else {
document.getElementById('addedMore').innerHTML = "Only 3 fields are allowed.";
document.form.add.disabled=true;
}
}
</script>
Here is the code in my HTML - Code: <input type="text" name="field1" size="25" /> <span>Field 1.</span> <div id="addedMore"></div> <p class="addMore"><form name="add"><a onclick="addMore()">Add another field.</a></form></p> Thank you very much. Hello all, I have a form that submits a POST request when data is submitted. A Servlet then processes this POST request and a JavaBean is used to make some calculations. The HTML response is not generated within the Servlet but instead I forward the request to a JSP to generate the response. - This all works fine, thankfully. However, I am stupidly suck trying to validate the form on the client side with a JavaScript function before the form is submitted. Here is my index.jps: Code: <%--
Document : index
Created on : 19-Nov-2009, 13:41:30
Author : lk00043
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/JavaScript">
<!-- Start hiding JavaScript Statements
function validateForm() {
var student;
var score1, score2, score3, score4;
student = document.getElementById('student');
s1 = document.getElementById('score1');
s2 = document.getElementById('score2');
s3 = document.getElementById('score3');
s4 = document.getElementById('score4');
score1 = parseInt(s1.value);
score2 = parseInt(s2.value);
score3 = parseInt(s3.value);
score4 = parseInt(s4.value);
if(student.value.length == 0) {
document.getElementById('StudentError1').innerHTML = " Enter a student name!";
return false;
}
if ((isNaN(score1)) || (score1 < 0) || (score1 > 100)) {
document.getElementById('Error1').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score2)) || (score2 < 0) || (score2 > 100)) {
document.getElementById('Error2').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score3)) || (score3 < 0) || (score3 > 100)) {
document.getElementById('Error3').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score4)) || (score4 < 0) || (score4 > 100)) {
document.getElementById('Error4').innerHTML = " Enter a number between 0 and 100!";
return false;
}
}
// End hiding JavaScript Statements -->
</script>
<title>Lab Class 7 - Task 2</title>
</head>
<body>
<h1>Lab Class 7</h1>
<form name="collectgrades" action="AssessGrades" method="POST" onSubmit="validateForm()" >
Name of Student: <input type="text" name="student" id="student"/><span id="StudentError1"> </span><br />
Presentation: <input type="text" name="score" id="score1"/><span id="Error1"> </span><br />
Writing style: <input type="text" name="score" id="score2"/><span id="Error2"> </span><br />
Technical content: <input type="text" name="score" id="score3"/><span id="Error3"> </span><br />
Depth of analysis: <input type="text" name="score" id="score4"/><span id="Error4"> </span><br />
Feedback:<select name="feedback" size="4" multiple="multiple">
<option>"Could be better structured."</option>
<option>"Depth of analysis is good."</option>
<option>"Very advanced material."</option>
<option>"Very well structured."</option>
</select><br />
<input type="submit" value="Submit" />
</form>
</body>
</html>
Regardless of whether incorrect input is given, the data is still POSTed to the server and calculated on or a Server Side error is given. Am I correct in calling the function onClick? The validation essentially needs to be so that: - Student field contains a string - Score1, Score2, Score3 and Score 4 contain a number between 0 and 100 Any help is most appreciated, Cheers, Beetle. I'm trying to figure out how to both make the text grey and when a user clicks inside a input field remove the helptext. So far I got this: Code: <input onfocus="this.select()" onblur="this.value=!this.value?'E-mail here':this.value;" name="name" value="E-mail here" type="text"> What this does is allmost correct, but it doesnt remove the predefined text "E-mail here", it just select it all, and then the text is not grey... Can somebody please guide me in the right direction... Thanks in advance! Hello: I have an expression validating email addresses but it seems there is a loophole. If a user enters a comma this is accepted. Can anyone tell me how i can modify the following to disallow commas? validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i; strEmail = document.form1.df_email1.value; if (strEmail.search(validRegExp) == -1) { alert("A valid e-mail address is required."); document.form1.df_email1.focus(); return false; } hi, I have a form with a tick at the end of each formfield: Code: <label>First Name<a href"#">click</a></label> <input class="text-input medium-input" type="text" id="medium-input" name="FirstName" /> <span class="input-notification success png_bg">Successful message</span> the style is currently set to display:none; I would like to use the FadeIn() method on the input-notification class when someone enters some text at the moment I am trying to test using a link to click on: Code: <script>
$("a").click(function () {
$("tab2").fadeIn(3000, function () {
$("span").fadeIn(100);
});
return false;
});
</script>
this doesn't work as I have 2 tabs and the link sends it back to tab1 In this Form field, when I select the field box that shows "Enter Text" I'd like it so the text disappears, so I can begin typing in a cleared field box. This is the line of code, I believe, that has to do with that function. Any help with having the Enter Text clear upon selecting, will be appreciated: Code: <input autocomplete="off" id="keyword" name="keyword" value="Enter Text" onclick="clickclear(this, 'Enter Text')" onblur="clickrecall(this,'Enter Text')" /> here is my current email validation code: function validateEmail(strValue) { var objRegExp = /(^[a-z]([a-z_\.]*)@([a-z_\.]*)([.][a-z]{3})$)|(^[a-z]([a-z_\.]*)@([a-z_\.]*)(\.[a-z]{3})(\.[a-z]{2})*$)/i; return objRegExp.test(strValue); } what should i add to reject email addresses from hotmail.com and yahoo.com? I have a text field, call it income, that when the input is > 0 I need to dynamically show the next text box, and if it is blank hide the next text box. I would like to use onBlur but can't seem to get it to work. Can I do this? Help Hi there, I want to prompt a user to enter their name, if the user entry includes numbers I would like to prompt them to re-enter their name using only text. I have tried: Code: var userName = prompt ("Please enter your name", " ");
if (userName == null || !isNaN(userName)) {
prompt ("Please enter a valid name, and do not include any numbers in this field");
userNamm.focus();
} else {
document.write("Welcome back " +userName); }
It isn't working, I would like to monitor the user entry for only text values, can anyone help me to clean this up? figured out, sorry
Code: <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>New Page 2</title>
</head>
<script type="text/javascript">
var strWord = document.myForm.txtWord.value;
function validateWord()
{
while(strWord == document.formname.myForm.value.length > 8 && var ichars = "PJ" );
{
alert ("OK.");
}
}
</SCRIPT>
<form name="myForm" action="" method="" onsubmit="return false">
<p>
<input name="txtWord" size="25" value="Enter Word Here">
</p>
<p>
<input type="button" value="Validate The Word" name="cmdValidateWord" onclick ="validateWord()">
</p>
</html>
Hi, I'm having trouble getting this code to work. It needs to check if the user has entered the correct characters into a field. A valid word should have a P at the start, and contain a J somewhere in it. If the word is valid, a box pops up saying "OK" once the user has clicked the ValidateWord button. It also needs to keep this kind of structure (ie. a while construct & validated through pressing a button). This is purely for personal education about performance of "while" constructs for field validation. Any help is hugely appreciated. Hello, I am trying to create a function that tests to see if the text field that I create in my markup contains numbers. Please help. Thank you. |
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