How To Check Characters / Digits In Textbox

Feb 17, 2009

i am trying to check a character with another character which are in the same text box.when we are entering date,date in the first text box and month in another text box and year in another text box.now i want when i am trying to enter '0'in the character position when there is '0' at first character position it must raise an alert box as well as when i am trying to enter a digit greater than '1' at 2nd character position it must raise an alert box when there is '3' in the first character position.

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Custom Parser For Digits And Characters

Jan 6, 2011

I would like to write a parser like the one below except I would like it to take characters with the the digits like 345j, 982p0, what would I change to be able to have characters with numbers?

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Phone Number Validation \ Check Whether It Exactly Contains ONLY 10 Digits?

Aug 18, 2011

I want to validate phone number in my project. I include some validations. Furthermore i want to check whether it exactly contains ONLY 10 digits.nothing more and nothing less.How should i include that?

if (document.form1.phone_number.value == '')
{
alert('Please fill in phone number!');

[code].....

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Countdown Characters From A Textbox?

Oct 31, 2009

what i can use to countdown the number of chars that a user enters in a text box?

Take a look at this page:-

[URL]

If you look at the textboxes towards to bottom of the page, you will see the limit of chars i allocate for e.g. (300)

Now how can i get this value to countdown when the user enters words?

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Select Everything In A Textbox Between Two Characters?

Oct 6, 2011

Is it possible to use javascript to select everything in a textbox between two characters?

Example

;abc;def;ghi;

When the user clicks anywhere between abc then abc is highlighted.

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How To Display Special Characters Within A Textbox

May 14, 2011

Var x = aa "aaa" aa

How can i display this value within a textbox?

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Disable Special Characters In A Textbox / Textarea?

Jul 1, 2008

how can i disable special characters in a textbox/textarea?

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Limit The Number Of Characters Accepted By A Textbox?

Jan 3, 2011

Awhile back I posted a script that was working fine in IE but not in Firefox. This is again my dillema with another piece of code.It is supposed to limit the number of characters accepted by a textbox.Here's the JS:

<script type="text/javascript">
function textCounter(field,cntfield,maxlimit) {
// if too long...trim it!

[code]....

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Check For Special Characters

Nov 8, 2005

i have a textarea on the page. how can i check if user inputted any spec. characters?
like ; ! * & $ and etc

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How To Check Illegal Characters For Name

Feb 25, 2006

i don't know how to check for illegal characters for name.. i have one for username but i don't understand how to use it.. it does not allow spaces so it will not work for first and last names..

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Check Fields For Certain Characters?

Sep 8, 2009

am doing a check on my fields, so that they only contain certain characters and numbers. var validEntry = /^[a-zA-Z0-9@$&"]+/; but this also captures a space in between words as an error. can somebody please tell me on how to avoid this.

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Check To See Multiple Concurrent Characters

Mar 4, 2010

Ive got a project and ive been steaming ahead with it myself for a bit, i was given the code to start off with but have adapted it for my own needs. As well as fieldOne being a minimum of 3 characters I also need to check if the first three characters are the same because we get a lot of spam.

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Check Last 15 Characters Of A String For A Space/tag?

Jun 27, 2011

So I want to be able to check the last 15 characters of a string for either <br /> or a space. I know how to do this with PHP but I have no clue how to do this with Javascript and Google is failing me. Could someone point me in the right direction?

Example string: var string = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."

I'm assuming this will be done with lastIndexOf but I do not know how to do it. So to reiterate, I want to check to see if either a space exists, or <br />, delete everything after that, and return the string. So the output of the example string would be...

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo

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Check If Field Is Numeric, But Allow Certain Characters..?

Oct 12, 2006

I am doing some basic form validation stuff and I have two fields (phone, fax) that I need to check if the characters enterred are numeric, but still allow + and () characters to be enterred. If anything else has been enterred to display an error message.

Can someone point me to a resource ( I searched, but couldn't find an obvious one!) or give me a rundown on some code here to help me out?

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Check For Arabic Characters In String

Nov 8, 2010

I am trying to check for Arabic characters in a string using Regular expressions. This should return true, as the string in the str variable is indeed Arabic character. But it returns false.

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Check If Text Contains Special Characters

Sep 6, 2011

E-mail addresses can't contain some characters.How to check if the users input is ok? the code don't work, IE says "expected object".

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Check Letters / Numbers And Special Characters

Apr 2, 2011

This is the function CheckmyForm.I need check that you enter only letters, numbers and special characters ",", "." and ";" in the TextareaS1 field.

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Check If First 2 Letters Equal Certain Characters In Input Field?

Jun 14, 2011

I am having trouble with some javascript code that checks the first 2 letters of what the user inputs and whether it equals a certain set of characters. If the user for instance types in 'TT' in an input field, then i want the holding div to disappear, if anything else is typed in then this action wont happen. My code is below:

Code:
<script type="text/javascript">
function checkCode() {
var x=document.forms["myform"]["code"].value.substring(0, 2);
if (x == 'TT')

[Code]...

I believe the problem lies in the javascript line: "if (x == 'TT')", as the rest of the script responds but it just doesnt recognise whether 'x' starts with 'TT'

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Check Value Of A Textbox In A Form?

Jul 23, 2005

Tell me how to check the value of a textbox in a form,

1, the value must be only a positive number ( not 34ax43) , for input a stock number of product

2, the value must be positive komma and two digits max (eg 150,20) , for input price value

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How To Check Textbox Empty Or Not

Oct 9, 2009

I creating a form, i want submit if it is not empty, how can i do it?

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Check The Last Char Of The Input (textbox)?

May 2, 2009

I have a question regarding the Submit Form. I have a few input textbox How can i check the last 4 character of input if it is ".php"

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Getting A Integer Value From A Textbox - Check If It's Nan Or Null?

May 12, 2010

I am pulling a value via JavaScript from a textbox.If the textbox is empty, it returns NaN.I want to return an empty string if it's null, empty,etc.What check do I do?if(NAN = tb.value) ?

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Check If The Textbox Matches The Pattern?

Feb 18, 2010

I need to validate three textboxes and it will validate for numbers. How should I change my code to validate three textboxes?

Code:
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

[code]....

I need to use Javascript to validate 3 textboxes, whereby the users can only key in numbers (because they are phone numbers related fields). If any of the textbox is empty, display an alert message to show which textbox is empty. I do not want to show many alert messages to show that, for example, text1 and text2 are empty, it will show two alert messages. I would need to show one "summarized" alert message instead.Next, check if the textbox matches the pattern (which is to check if it has the skeleton of a phone number). If it is, show an alert message that it is alright. Else, show that it does not match.

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Check Text In A Textbox Against Script Array?

Nov 9, 2010

I have a text box and would like to see if the value of the input matches the values defined in a JavaScript array.[code]...

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Check When Textbox Value Has Changed In Button Onclick Event?

May 24, 2010

I have a textbox, which has a default value and a button in my page.

In the button onclick event, i want to check if the value in the textbox has changed.

How to check if the textbox value has been changed in the button onclick event?

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Check If The Selected Date In A Form Textbox Is Less Than Today?

May 24, 2010

What I want to do is to check if the selected date in a form textbox is less than today in which case an error message should be displayed. I tried to write the code myself, but unfortunatelly I miss something.Here are th lines:

Code:
function dateValidation()
{
var obj = book.dc1.value;
var day = obj.value.split("/")[0];
var month = obj.value.split("/")[1];

[Code]...

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