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JavaScript FAQ Home Page

FAQ Manager is guru Firat Tiryaki PREMIUM.

JavaScript is not Java, but in this FAQ we'll help you find answers to your JavaScript related questions.

What's New

Creating a javascript object with dynamic property name Hello All, Please consider the following code: var myobj=new Object(); myobj.name="Amit"; myobj.dob="1990"; later on whenever i require,...
JavaScript
Firat Tiryaki PREMIUM, Mar 11, 2008
You should use eval function for that. Check out the below lines, sure it will help; x=new Object(); propertyName="nameProperty"; propertyValue=...

Open new window every time Hi, I am trying this example below : On click of the link it creates one window, if i click it again, i do not get a new window( another window) but rather the same wind...
JavaScript
Robert Lybarger, Feb 14, 2008
I am *not* a javascript expert... but maybe taking out the "remotewin" argument to the window.open call (leaving it either empty or null) would work, since...

how to delete selected checkbox value from database hi all, My requirement is i have checkbox in table. if i select the checkbox and click on remove button i want to remove the entry from database.i...
JavaScript
Robert Lybarger, Dec 24, 2007
Then when you dynamically drawing the checkbox elements on the page in some sort of loop for a result set, you should set the "id" value of the checkbox...

I need a open source JavaScript debugger to work with the NetBeans IDE I am facing many problems while writing Javascript. Because there is no way to debug my code right now. SO, I am looking for Javscript...
JavaScript:Tools
Stephen McConnell PREMIUM, Nov 6, 2007
I use FireFox and the Venkman Javascript debugger found in the FireFox extensions. Between that and the Error Console in Firefox, it's really great....

javascript enabling problem Hi Guys, I had written some code in javascript. But the problem is if javascript is disabled in the client side then my code is not working fine. So how to enable the javascript...
JavaScript
Robert Lybarger, Sep 18, 2007
You can't programmatically turn on someone's javascript engine... how would you even do that? Write it in javascript? This is a personal user preference...

Strange javascript error in parseInt Hello, I am trying to do date validation for mm/dd/yyyy format. My javascript passes for al month and day values except for 08 and 09 (both for day and month). Only...
JavaScript
Axel Richter PREMIUM, Sep 7, 2007
HI, the function parseInt(string, radix) has a second parameter radix, see http://devedge-temp.mozilla.org/library/manuals/2000/javascript/1.3/ref...

include js file in another js file how do you include a javascript file in another this doesnt seem to work for that <script language="javascript" src="searchArray.js"></script>
JavaScript
bharanidharan kaliyaperumal, Jun 13, 2007
There is no need to include one js file into another. Javascripts are globalised one. You can include both the files in the HTML/JSP page. If you are familiar...

what is the difference between JavaScript & AJAX? For what purpose AJAX is used ? what is the abbrevation for AJAX?
JavaScript, Programming:AJAX
Krishna Rajendra Alapati, Mar 26, 2007
Hi Pradeep AJAX is "Asynchronous Java Script and XML".Mainly used if we need to refresh a part of a HTML page but not the total page.For example take...

Access Denied error in frames When I try to access a child frame from parent frame I get "Access Denied Error". I know the reason is because I am trying to access the frame in a different domain. Is there...
JavaScript:Security
Christopher Koenigsberg PREMIUM, Feb 23, 2007
I think you're up against a basic security principle -- "cross-site scripting" is prohibited, in most or all browsers. Otherwise someone could potentially...

Javascript function registration We register 2 functions against the same event of a component - but in different ways. One is through inline event handlers and the other through attachevent/addeven...
JavaScript
suresh kumar, Feb 23, 2007
Hi, the order of fn execution starts from inline event and then attachevent/addEventListener. Basically 'attachEvent' handler support only in...

javascript not working properly in Mozilla v1.0 but same code is working fine in IE v6.0 :ERROR-----headTable.style has no properties in Firefox CODE: ::::::::::::::call of js in JSP:::::::::::::...
JavaScript
Axel Richter PREMIUM, Feb 5, 2007
Hi, the property [Node].firstCild contains the first cild node of the given node. This node may be a text node or a element node. For example: <div...

How can I call a Java method from Javascript?
JavaScript, Programming:AJAX
Byron Tymvios, Oct 3, 2006
Direct Web Remoting is an open source Java library which allows for easy integration of AJAX into your web site. It allows you to call Java methods directly...

Read a file in script!! HOw can we Read a file using Java Script.. My requirement is i have to read a file in java script.. Can anyone tell me how to do that..
JavaScript
Robert Lybarger, Jul 27, 2006
ActiveX can be used. However, be aware that an increasing number of people are not using internet explorer on windows (either due to alternate browser...

Is it possible to set session variables from javascript?
JavaScript, Programming:AJAX
Byron Tymvios, Jun 8, 2006
It's not possible to set any session variables directly from javascript as it is purely a client side technology. You can use AJAX though to asyncronously...

What is jrunscript?
JavaScript:Integration:Java
John Zukowski PREMIUM, Apr 1, 2006
In JDK 6.0, jrunscript is a command-line scripting shell program. Supposedly, it is experimental and may not survive past JDK 6.0.

How do I test my AJAX code?
JavaScript:Tools, Programming:AJAX
John Zukowski PREMIUM, Dec 31, 2005
There is a port of JUnit for client-side JavaScript called JsUnit (http://www.edwardh.com/jsunit/).

find out if a browser is closing with js: the biiiig answer while developing an application i came across a strange thing that i thought might be useful for all who deal with javascript. whoever uses...
JavaScript
Firat Tiryaki PREMIUM, Nov 19, 2004
Thanks Cem...

Learn by 100 examples! With an editor, you can edit the source code, and click on a test button to view the result. A useful tutorial by w3schools. You can edit the code and view the result at the same...
JavaScript
Firat Tiryaki PREMIUM, Sep 16, 2004

How can I detect whether my popup window is blocked by a popup blocker? How can I detect whether my popup window is blocked by popup blocker and inform the customer/caller through alert that the popup...
JavaScript
Christopher Koenigsberg PREMIUM, Mar 25, 2004
I guess you could try checking whether an object is not null and is of the right type, for something in the popup window.

Use of right technology at right place I have three coding technologies javascript,jsp,servlets.Through discussions on websites dedicated to each one of these technologies it is evident that it is possible...
JavaScript:Integration
Stephen McConnell PREMIUM, Feb 25, 2004
You might want to review some discussions of what the "Model View Controller" paradigm is. That would help you greatly. But basically it divides development...

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