How to debug the javascript in asp.net? - javascript

I want to know ,how to debug javascript in asp.net?Can I apply break point to javascipt?

You could do following
Use debugger keyword with .Net IDE. In your javascript on your page.
something like this.
Use F12 Developer tool with IE browser.
Use FireBug with Firefox.
Use Control - Shift - J to open Developer Tools and bring focus to the Console. for Google Chrome.

If you are using Visual Studio along with Internet explorer, you can debug javascript by simply applying breakpoints. Or else if you want to debug your javascript file in fire fox or chrome browsers you can make use of tools like Firebug # http://getfirebug.com/

You can use firefox firebug or chrome tool.
for example:
you click in chrome examine the element and then in "Source" you select your script add breakpoints and debug it.

You can use Firefox but Firebug should be installed. Then, from Script tab, you should "Reload" to see all resources. After that, when you want to debug any line, put breakpoint to left side of code and when you reload the page debug will start and you can step into/ over / out, continue, rerun..

You can use Firebug tool in Mozilla browser it will notify all the error in your javascript, what java scripts are loaded, function call to javascripts are correct or not on run time.

Related

Chrome Dev Tools. I am trying exclude extension js files from step by step debugging. But "Blackbox content script" in settings doesn't work

When using the Sources panel of Chrome DevTools to step through code, sometimes you pause on code from Chrome Extensions.
There is a solution from documentation: Blackbox Chrome Extension Scripts
But even if I enable this parameter:
The code debugger still is pausing in content sctipts (chome extenstion js files)
How can I fix it?
You should provide a pattern.
You can do it simply clicking the right button on the code of the script you want to black and selecting "Black box script".
Let me know if it works.

How do I search for javascript in the firefox debugger?

Very simply, what is the equivalent in firefox to chromes "search" tab within the browser console? Specifically firefox developer edition.
Use Debugger -> Search scripts (Ctrl-P). There are multiple options in that dialog to search the current file, or all files. It searches HTML and CSS as well.

Trouble loading Firebug Lite in IE

I have downloaded the latest firebug-lite and placed it in my local directory and I am including it <script type="text/javascript" src="../js/firebug-lite.js"></script> just like that. IE is throwing this error in the console - SCRIPT5: Access is denied.
It seems like it's a cross-domain issue for IE, which I am not sure how it is - I do want to try to get it working in this specific way(local file) - the other ways to include it do work somewhat.
As far as the error Access is denied. is concerned, It is obvious that you are trying to run a script for which you don't have privileges. Are you the administrator of this PC, Are you using the limited or guest account while browsing using IE.
Nontheless, you can always follow these steps by Colin Pickard to get it working in IE
Go to some Firebug Lite page (http://getfirebug.com/firebuglite).
Click the "add to Favorites Bar" button on the Favorites Bar.
This will give you a bookmark to http://getfirebug.com/firebuglite.
Right click on the "Firebug Lite" link and choose "Copy Shortcut".
Right click on your new bookmark and choose Properties.
Paste the bookmarklet into the URL box and close.
Have you got any of the "ie7.js" shims loaded, too? I tried using "ie9.js" (a later version for IE8) and it screwed with Firebug Lite for me. I feel your pain; Firebug Lite is a damn sight better than the IE8's absolutely useless native tools.

Does anybody know how to get to the new Firefox 15 Javascript debugger

My Firefox automatically updated today to version 15. There is now a built in javascript debugger.
Can somebody point me to a useful page that explains how to get to it and optionally how to use it?
I have firebug installed - does that override it?
I have found something that says CTRL-SHIFT-S is the short cut key for it, but this seemingly does nothing.
If, like firebug, I need to set a breakpoint, how do I do this?
look here at the bottom of the page at the unresolved issues... Page reload does not start the debugger...
You can go to Tools / Web Developer and the Debugger for example.
Yes firebug seems to remove the source editor, try disabling it shortly then view the source and you should be able to add breakpoints.

Show Javascript functions in real-time

Is there any tool or addon which can be used for testing or identifying Javascript functions in real time (i.e. on click or some events )..
e.g. on a website, I want to know after clicking on a link, which all JS functions are being called/executed..I know sometimes it is stragightforward from the code, but in case it uses JS libraries like jQuery, the actual function call is made from otside..
How can I do that?
*I'll really appreciate if, alongwith the addon, you just write a short description as to where can I find the Javascript finction tracking in that **
Thank you.
Try Firebug. It's one of the most useful firefox addons. Grab it here:
http://getfirebug.com/
Dragonfly (Opera), or Firebug extension for Firefox, or any other good javascript debugger
See Visual Event. It is a bookmarklet that overlays element event handler information.
FireQuery is available as a firefox plugin which adds handler information inside of firebug.
Firebug includes a JavaScript profiler. Give it a try.
http://getfirebug.com/javascript
In Chrome, right click the page and choose Inspect element, go to the console, start javascripting! Choose the scripts tag to get debugger functionality.

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