Check if field value is modified

Hi All,
I have a text field in my HTML page which has a value stored in it.

I need a java script code to allow the user to save if the content of the text field is edited.ie User should be prompted with a message on clicking the button
Displaying the "Content of the field is Edited".

Please help me in this regard as it will be help ful for my project completion?

Thanks in Advance!!!!!!!!!

Sep 23 '07 #1

Subscribe Post Reply

3690

pbmods

5,821

Expert 4TB

Heya, ananth.

Simply store the previous value in the Element object (or a global variable, if you prefer) as the User edits it, then compare it to the current value when the User clicks the button.

Sep 23 '07 #2

Logician

210

100+

Hi All,
I have a text field in my HTML page which has a value stored in it.

I need a java script code to allow the user to save if the content of the text field is edited.ie User should be prompted with a message on clicking the button
Displaying the "Content of the field is Edited".

Read the element's defaultValue property.

Sep 23 '07 #3

ananth

Heya, ananth.

Simply store the previous value in the Element object (or a global variable, if you prefer) as the User edits it, then compare it to the current value when the User clicks the button.

Hi pbmods,
Thanks for your reply ,but do you have any sample code on how to implement it.Any sample code or website links would be of more helpful to me.

Sep 26 '07 #4

dmjpro

2,476

2GB

Hi pbmods,
Thanks for your reply ,but do you have any sample code on how to implement it.Any sample code or website links would be of more helpful to me.

Have a look at this!

Expand|Select|Wrap|Line Numbers

 
<body onload = store()>

<input type = text id = text1 value = "some_value">

<input type = button value = "Check" onclick = "check()">

</body>

Expand|Select|Wrap|Line Numbers

 
var prev_value = "";

function store()

{

 prev_value = document.getElementById('text1').value

}

function check()

{

 var cur_value = document.getElementById('text1').value 

 if(cur_value != prev_value) alert("Value changed");

 else alert("Value not changed");

}

Good Luck!

Kind regards,
Dmjpro.

Sep 26 '07 #5

by: | last post by:

If I need to check if a certain value does exist in a field, and return either "yes" or "not" which query would be the most effestive?

ASP / Active Server Pages

When should cacheing proxies check for changes?

by: Clive Backham | last post by:

I tried posting this on comp.infosystems.www.misc, but that group appears to get very little traffic. So now I'm trying here. If there is a more appropriate group, please let me know. I'm...

HTML / CSS

Identifying modified field?

by: A P | last post by:

Hi! Is there a way where I can identify if the field sent was modified? Me

ASP / Active Server Pages

Check numbers entered

by: Steve Wylie | last post by:

I am constructing an HTML questionnaire and one of the questions requires people to rate some choices from 1 to 5, where 1 is their favourite and 5 is their least favourite: Car Bus Taxi cab...

Javascript

0 or blank Data Entry field on a form when tabing or clicking to enter

by: JC Mugs | last post by:

I have a form that when you tab from field to field that the entry point is blank, but if you point and click in the field it brings up a 0 and data entry is started to the left of the zero. ...

Microsoft Access / VBA

Check if DB table has changed

by: mike | last post by:

I'm writting a q&a chat application and hae a small refeshing IFRAME to check if there has been a new or modified chat item written, if so the main chat window refreshes and the datagrid gets...

ASP.NET

can't reset a hidden field in form

by: newbie | last post by:

i have a form in which a hidden field (initial value as '0', and my javascript set it to '1' when an event is trigged). In the same form, i have a reset field. But I realized that the hidden field...

Javascript

How to check all the checkboxes if checkbox name is 'name[]'

by: PhpCool | last post by:

Hi, since sometime I'm stuck in a problem where I want to check or uncheck all the checkboxes. If I'm choosing name for the checkbox array as 'chkbx_ary' then I'm able to check/uncheck all the...

Javascript

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

Changing the language in Windows 10

by: Hystou | last post by:

Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...

Windows Server

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...

C / C++

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

Online Marketing

Discussion: How does Zigbee compare with other wireless protocols in smart home applications?

by: tracyyun | last post by:

Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

General

AI Job Threat for Devs

by: agi2029 | last post by:

Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...

Career Advice

Check if field value is modified

Similar topics