Simple Javascript Equality / Field Validation
Apr 15, 2007
All I need is a script to check whether a field contains an exact code. For example,
A user goes through a game, collects pieces of the code - In this case random numbers or letters to form a 9 digit code.
The user can then enter this code into the field, hit submit and told whether they've cracked the code or not.
So basically something like, if this field contains "123456789" then go to WellDone.html but if it contains anything else other than this code then go to BadLuck.html ,
any ideas? Code:
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May 9, 2010
I need to validate the form, I am getting started by validating a simple username field. I have written the code but it does not seem to work for me.
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"[URL]">
<html><head>
<meta name="generator" content="HTML Tidy, see [URL]">
<meta http-equiv="Content-Type" content=
"text/html; charset=iso-8859-1">
<title>Registration Page</title>
<script type="text/javascript">
function validfrm(){
if (document.frmregister.username.value == "") {
alert("Please enter your username");
}return false;
return true;
} .....
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Jul 23, 2005
I have a web form with several fields. If I copy & paste from a RTF document into a field, the javascript validation and field length are bypassed and cause the form to fail.
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Dec 21, 2009
I need to validate two forms containing multiple input fields but want just one error message if any of the fields are left blank, the page is required to submit the users details (registration form). Also if any of these fields are left blank i don't want to be able to go to the next page on clicking the submit button
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Feb 26, 2009
I'm using the validation plugin available here and seem to be encountering trouble in IE7. The validation is not occuring and my forms submit. Not what I want.The functions below are working fine in FF3, Opera 9.0, Chrome, & Safari.I'm going to guess this is a result of some misplaced character or ...??? Maybe a second set of eyes will spot the error.
Code JavaScript:
//
// Validate Form Fields
[code]....
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Jun 13, 2003
I'm trying to write some validation for a field called Propid, in a form called qSearch. Basically if there's nothing in Propid, or it is says "ref no.", I want to alert the user, otherwise, I want the form to submit.
Here's what I have at the moment:
Code:
<script>
function checksearch()
{
if (qSearch.Propid.value!="ref no." )
{
alert ("Select reference number" );
qsearch.Propid.focus();
return;
}
if (qSearch.Propid.length != 0)
{
alert ("Select reference number" );
qSearch.Propid.focus();
return false;
}
}
}
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Feb 3, 2009
The following form validation script works, currently if one of the five fields are completed, a message appears the remaining field(s) must be completed etc. Although the information the user has inputted in the first field is cleared. How can this information be available, if there is one problem in the form it doesn't make sense that the user must re-input all the information again. I look forward to hearing your response,
function validate_form ( )
{
valid = true;
[code]....
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Oct 15, 2005
I've been playing with this form validation method for a while and have
tried an array of things but haven't had any luck with a couple items.
1. The validateForm() function doesn't detect when the Min price is
greater than the maximum price.
2. The validateForm() function doesn't call isNumber() on the minBaths,
maxBaths, minBeds, or maxBeds.
3. Despite errors in input and the validateForm() function returning
false, the form is still submitted.
Here's the code:
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Mar 29, 2010
Im building a simple form that should check for two fields (not empty), however it seems the form is not being activated as no errors are being produced.
Code:
<!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>Guestbook</title> <script type="text/javascript"> function checkform() { if
[Code].....
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Nov 22, 2011
If the value is equal to 0 it will give an alert and return false. Then if you change the value of the drop down it won't let you submit.
<script type="text/javascript">
<!--
function validate_form ( )
{
[code]....
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Jan 14, 2007
I am a Javascript newbie and I'm trying to implement a very simple form validation function, but for some reason it won't work. I must be doing something fundamentally wrong here. Maybe somebody can hint me into the right direction? My code looks like so:
function validate_form ()
{
valid = true;
var re = new RegExp();
re.compile("[A-Za-z0-9._-]+@[^.]+..+");
if ((document.form.author_name.value == "")
|| (document.form.author_email.value == "")
|| (!re.test(document.form.author_email.value))
|| (document.form.author_message.value == ""))
{
alert ("Please fill in all required fields.");
valid = false;
}
return valid;
}
The tricky bit is the email validation using the regular expression. Apart from that it all works.
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Jun 20, 2011
I've been looking around on the internet search for the right way to check for object equality, but I couldn't really find an answer that I could be sure of to be correct.
I made a vector "class", where mixed types of data can easily be stored in an array. I want to add an equals method to the vector. What is the correct way to check if two objects are equal? Where equal means that both objects hold the same data?
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Aug 7, 2010
If I define two arrays identically and test for their equality I get a "false".
That is,
Code:
So I thought perhaps == could not be used to compare arrays.
But the following:
Code:
Why the first comparison fails?
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Jun 20, 2010
I am trying to do a simple email validation for a form with javascript that doesn't seem to work. I have tried pasting it into both the head and body of my html document. I have also tried unsuccessfully to link it as an external .js file. I have tried numerous scripts that I have found online but none have worked. I am new to programming and don't have much experience with javascript.
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Apr 8, 2009
The following is a simple form with text boxes..Used java script to check for nulls but how to check my phone number for only integer values ie numbers
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May 17, 2009
I am in need of some very simple javascript to validate email address and a phone number from a form.
The email address only needs to:
1. Check that the box is not empty.
2. Check that the text imputted contains an '@' symbol.
3. Check that the text imputted contains atleast 1 Period.
The phone number only needs to:
1. Check that the box is not empty.
2. Check that there is no more than 11 characters.
3. check that only numeric characters have been inputted.
I would like it to report (failure) back as text on the page under the box that has the problem rather than a window.
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Feb 18, 2010
Im using a simple html/php form to communicate with twitter, im trying to add some java script validation but it isnt working i cant see why it isnt.
This is my code.
<?php
Javascript Form validiation:
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Jan 26, 2010
I'm trying to create a simple registration form with ajax validation. I've got the form working almost how I'd like... a message appears on the page with the errors for each field entered incorrectly.
The problem is all the error messages appear in one div together and I would like to have each field have its own div containing only its own error.
I think I need to wrap my error messages in xml and use something like this -
Code:
- but can't seem to get it working
Does anyone know how I should modify my code to do this?
Attached are the 3 I'm currently using
And Here is my code for my ajax page only.
Code:
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Jan 29, 2009
Is it possible to test whether two objects are equal using the data they contain inside and not comparing their pointers with ==?
Well actually of course there is but...
Is there a way to do it without actually looping through the object, instead maybe something that came with JS? (something like a .equals() method from other programming languages.)
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Jul 7, 2010
Im trying to build a simple 'ajax' drop down field which will show more attributes from a certain field.if you were to click on one of the episodes another field loads without the page refreshing, this new field also has not been loaded with the original page. It has been updated separate to the page.
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Jul 23, 2005
I have a form1 with two fields, field1 and field2. I want the contents of field1 to be transferred to field2 onBlur, but with some changes. I want the contents of field1 to have its spaces replaced with Dashes, and all punctuation removed, so this can happen:
FIELD 1 value:
Today's rate is 15%, & the outlook is good.
onBlur should then create a value of:
FIELD 2 value:
todays-rate-is-15-percent-and-the-outlook-is-good
Notice that the "&" was converted to "and", the "%" to "percent". The comma
was deleted and all spaces replaced with Dashes. The second field should
only every contain alphabetic letter, dashes, and numbers.
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Jan 4, 2006
I'm trying to use this script:
<script>
function QuickSearch() {
var name=document.forms[0].name;
var tempdesc=document.forms[0].tempdesc;
if (name.value="780-06") {
tempdesc.value = 'Women`s Princess Cut Vest|882'
}
else if (name.value="RA32R") {
tempdesc.value = 'Womens Rib Hoody with contrast piping|2290'
}
else if (name.value="75007") {
tempdesc.value = 'WOMENS SLEEVELESS POLO|812'
}
else if (name.value="") {
tempdesc.value = ''
}}
</script>
<form>
<input type="text" name="name" value="" onblur='QuickSearch()' />
<input type="text" name="tempdesc" value="" size="45" />
</form>
to do a simple javascript search, I want to be able to enter say "RA32R" in the name box, and have the description come up, my problem is that it seems to just jump to the first value, even when nothing has been entered into the name field.
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Jan 30, 2007
I am wanting to make a config.js file that holds all the global scope variables. Then I want other files to use these variables in the web page. Is it possible that the get_stores_AJAX.js and the form-validation3.js have access to the variables in the config.js? If not is it even possible to do something like I am suggesting? If it is possible how do you do it? Code:
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May 22, 2007
I just need JavaScript to validate a form, and tell the person if h/she has answered the question correctly. For example; If the question was, what color is the sun? And h/she answered blue, then pressed the submit button. A text box would pop up explaining that h/she has answered incorectly. If h/she answeres yellow. Then on submit would send that person to the next page.
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Jan 29, 2005
I would like to know whether it is possible to create a simple button using javascript. i know that text fields can be created using Javascript.
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Jul 20, 2005
I have a field that requires validation when you press a button as follows:
<form name="form_affiche" enctype = "multipart/form-data" method="get">
.....
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