I'm developing for a JS target in Haxe using FlashDevelop. I would like to be able from inside the IDE, in the same way I debug a Flash target, with the breakpoints, callstack, variable list, all showing up in the IDE.
I currently use source maps with Chrome, but some IDE's can tie into Chrome directly to enable the debugging to happen in the IDE directly.
Is this possible in Flash Develop?
As far as I know, it is not currently possible. But FlashDevelop is open source so you are free to add this functionality yourself.
Related
I have an ASP.NET Web Application created with Visual Studio 2013. I am attempting to debug JavaScript in a CSHTML file. However, whenever I launch the webpage, any breakpoint turns into a red circle arrow and states, "The breakpoint will not currently be hit. No executable code of the debugger's target code type is associated with this line. Possible causes include: conditional compiliation, compilier optimizations, or the target architecture of this line is not supported by the current debugger code type."
Recently, the project was switched over to support MVC and RAZR, neither of which I know well, and this is exactly when this issue began. However, searching those have yielded results that don't fix my issue.
Web.config:
<compilation debug="true"...>
I know I can debug JavaScript with Firebug or some other browser tool, but I would much rather stick with Visual Studio's debug as that is what I am used to.
So, apparently this is a "known issue" that will be fixed as soon as possible. A temporary work around that works for "some" people is making sure any Javascript is in a separate file.
It is caused by having RAZR and Javascript in the same file and Visual Studio 2013 not being able to handle debugging in that instance.
I don't know what your particular problem is, but if you want to force a debug breakpoint to always happen, add debugger; to the line that you want it to stop on, and it will stop. This is regardless of where the JS is located (in a .js file, .html, cshtml, etc.)
Here is a blog post about it:
http://sumitmaitra.wordpress.com/2013/12/11/quickbytes-visual-studio-2013-and-javascript-debugging/
I also agree that JS should go in a .js file (which I've never had a problem adding a break point in a .js file), but for quick prototyping, this is a solution you can use.
If that still doesn't work, you can always you the F12 tools
The only browser that allows debugging a javascript file from Visual Studio is Internet Explorer. (this is what I found out after testing my application on different browsers)
I put my javascript in a separate file and debug with IE otherwise it will not work.
For some reason chrome doesnt allow you to step into the javascript.
One additional thing to check. If you have a App_Start|BundleConfig.cs (which came with MVC 4 - or maybe 3), set BundleTable.EnableOptimizations to false (or, like I did, wrap it in an #if !DEBUG #endif and take the default setting).
I tried and failed to use Chrome and then IE and ended up using the Firebug addon in Firefox, and I was able to debug and set breakpoints in my JS with no problems (in an MVC6 app on Visual Studio 2015 where this is apparently still an issue?!)...
FYI - When I tried to debug my JS in Chrome using the F12 Developer Tools, it told me it was not an option as the Debugger was already attached to another process...
For people coming here in 2017, I want to share that I had this same issue with VS2017 Enterprise RC, and with VS 2015 Community with any browser but Internet Explorer. Using IE did the trick for me.
Also, in VS2017, I had to add a debugger statement to get VS start looking at debug points.
Finally, I'd like to ask at least a comment from people voting down.
I am struggling with breakPoint issue in VS 2012 for more than hours. I am from eclipse background, there I never heard about such issues.
Problem :
The breakpoint will not currently be hit. No symbols have been loaded
for this document.
I have placed the break point in click action of Jquery.
I found the issue using the IE script debugging., The file loaded was old file., i.e I have modified a lot, but I can see no changes in the one which is loaded in IE. How to fix the bug
What I have Tried :
I know this question is duplicate, but being a newbie to VS and C#., I could not understand the older answers. For example, in this answer, he told to choose Debug -> Windows -> Modules. But I doesn't have Modules under windows in VS 2012. Also even though I read, I could not understand the explanation.
Also I am quite new to term Assemblies and PDB. Though, I located PDB files as he said. But how to open the .pdb file?
Need :
Could anyone explain me the same answer in easier term (with more explanation).
I found this out by accident with my VS2012 and ASP.NET MVC, maybe it can help somebody. I noticed that breakpoints in javascript that's inline in the *.cshtml file like this won't get hit (note that this file is a cshtml file):
But breakpoints in external *.js files will get hit:
Try to add debugger; key word before $.getJSON
Also make sure if you use IE to un-check the disable script debugging
Internet Options> Advanced tab> Under Browsing.
As I think this issue is related to Javascript debugging not C#
This results for me:
In your web application make sure Silverlight and ASP.NET debugger are enabled.
How to get there?
=> Right click on the Web Application => Properties => Web tab. Under Debuggers section make sure Silverlight and ASP.NET are enabled.
Running Visual Studio 2013 or Visual Studio 2015 RC, I've found that to get a breakpoint to work in a .js file I need two things to be true:
I need to start Visual Studio by right-clicking the VS shortcut and select "Run as administrator". (If right-clicking on the Taskbar icon, select the application shortcut icon from the pop-up menu and right-click on that to get a context menu that includes "Run as administrator".)
I need to set Internet Explorer as the default browser that will be opened for the web debugging session. If I choose Chrome or Firefox, the breakpoint doesn't work for me.
After opening and closing VS, rebooting the PC with all with no chance, this workaround worked for me in VS 2012 ( Ver 11.0.50727.1 RTMREL ):
In Project Property Pages, under Start Options, in Debugger section, only ASP.NET was enabled. As soon as I enabled Native Code and SQL Server, that red circle with plus sign inside, enabled again.
No idea why this worked! No active connection in Server Explorer nor using any native code in the project!
I had the same problem. You can use VS2017 to debug JS code this way.
When you set VS to launch the browser (Chrome in my case), it opens a new Chrome window. I was trying to debug the specific code (different URL from the window that opened) in a new tab. So I had the 'The breakpoint will not currently be hit. Breakpoint set but not yet bound' in VS.
I found out that if I opened the new URL in the original tab it suddenly worked. Seems that VS is tied to that particular tab.
Hope this helps.
These are the particulars of my situation: VS 2017 - Mainly C# code with some embedded HTML/JS which I needed to debug, Chrome (Version 68.0.3440), Windows 10
As this is Javascript code, so you need to use a javascript debugger. Generally internet browsers come with a debugger/inspector menu, which allows you to inspect/debug your javascript easily. Such debuggers come with a lot of useful features such as HTTP request/response inspection, browser session/local storage, etc.
Actually there is "Modules" option, but it's enabled only when you are in debug mode.
You can just press Ctrl+D,M combination when you're in debug.
In few words, PDB is a file that contains all debug information about your assebmly, you can not debug an assembly without this file. Assembly is a file that contains precompiled code for exetuion via CLR.
Could you provide a bit more information about your problem. What kind of application you are trying to debug for example?
Also, if you have located you pdb files made EXACTLY for your assembly, you can load it by right-clicking your assembly in modules window and selecting Load Symbols From > Symbol Path
Try deleting all breakpoints and restarting debugging in Visual Studio.
I would like to be able to add custom snippets of javascript to any site that matches a regex. This is mostly because of sites that I use daily because of specialized content, but which have a poor design. I want to be able to do something like:
Visit site See that sidebar overwrites content
Whip out developer tools, find div id for sidebar
Edit a snippet of javascript which is executed on document.ready for this domain:
$('#sidebar-right').remove();
A bit of searching for user scripts tells me that I need to be writing a Chrome extension, which seems unfortunate and overkill. Is there not an easier way, or an extension which is nothing but a javascript editor that assigns snippets to domains? I'd really like to be able to edit in Chrome itself, or at least have a file that I can just leave open in MacVim all the time. An extension requires unloading/installing to update as far as I can tell.
If I just had one big javascript file, that would be fine. I'd just wrap my customizations in domain checks.
Bonus love if I can write in CoffeeScript.
The answer is to use the Tampermonkey chrome extension.
https://chrome.google.com/webstore/detail/dhdgffkkebhmkfjojejmpbldmpobfkfo
Why not dotjs http://defunkt.io/dotjs/ ? It's local, you can version it with git, you can easily take it to another computer...
Another alternative that neatly solves the problem is Custom JavaScript for websites. You just need to install the extension, which takes around 2 seconds, and then you can immediately start typing your custom JavaScript for the specified website.
The extension automatically recognizes the current website, so all you need to do is write your code and click on Save. You can also easily import jQuery or your external scripts for convenience.
Custom JavaScript for Websites 2 is an alternative to Custom JavaScript for Websites, with some bug fixes and sync scripts across devices feature.
Snippets are available directly in Chrome Devtools
https://developers.google.com/web/tools/chrome-devtools/javascript/snippets
Witchcraft is another Google Chrome extension for loading custom Javascript and CSS, and it is supposedly for more avanced users. The older dotjs project repository lists Witchcraft as its successor.
What you're looking for is Greasemonkey. But wait, Greasemonkey is for Firefox only, right? Turns out, you can install Greasemonkey user-scripts as native Chrome add-ons. Just go to userscripts.org and hit the Install button on one of them, and Chrome will automatically convert it into a native add-on. Then, write your own and install it using Chrome.
Note: This only works in Chrome 4.0.
Is there some way to get chrome to launch my text editor when I click on a stack trace link pointing to a file:// url?
If you have relatively many files, you could try the Eclipse-based project:
http://code.google.com/p/chromedevtools/
If you manage to set up source lookup, you will have debugger stepping over your working files and live editing.
Together with JSDT or Aptana installed this may be quite usable.
However you will get only JS debugger, DOM tree is not supported.
At the moment the only way to achieve this is to modify DevTools front-end code(it's HTML+JavaScript so it shouldn't be too hard) to customize link clicks handling. There is a WebKit feature request for this functionality: https://bugs.webkit.org/show_bug.cgi?id=51526
How can I debug JavaScript in Eclipse. I am using Eclipse 3.2.1. Everytime I click on the side it gives the option for adding bookmark but no break point.
Could anyone assist me on this?
In 2015, there are at least six choices for JavaScript debugging in Eclipse:
New since Eclipse 3.7: JavaScript Development Tools debugging support. The incubation part lists CrossFire support. That means, one can use Firefox + Firebug as page viewer without any Java code changes.
New since October 2012: VJET JavaScript IDE
Ajax Tools Framework
Aptana provides JavaScript debugging capabilities.
The commercial MyEclipse IDE also has JavaScript debugging support
From the same stable as MyEclipse, the Webclipse plug-in has the same JavaScript debugging technology.
Adding to the above, here are a couple of videos which focus on "debugging JavaScript using eclipse"
Debugging JavaScript using Eclipse and Chrome Tools
Debugging JavaScript using Eclipse and CrossFire (with FB)
Outdated
The Google Chrome Developer Tools for Java allow debugging using Chrome.
I don't believe Eclipse has a JavaScript debugger - those breakpoints are for Java code (I'm guessing you are editing a JSP file?)
Use Firebug to debug Javascript code, it's an excellent add-on that all web developers should have in their toolbox.
I'm not a 100% sure but I think Aptana let's you do that.
I tried to get aptana running on my ubuntu 10.4. Unfortunately I didn't succeed. Chrome on the other hand, has an eclipse plugin that lets you debug javascript that's running in a chrome instance. Works very well.
YOu'll have to install the eclipse plugin you'll find here:
http://code.google.com/p/chromedevtools/
Set Breakpoints in the javascript sources you edit in eclipse and browser your page in chrome. As soon as a javascript breakpoint is hit, the eclipse debugger halts and lets you step into, step over, browse the variables etc. Very nice!
JavaScript is executed in the browser, which is pretty far removed from Eclipse. Eclipse would have to somehow hook into the browser's JavaScript engine to debug it. Therefore there's no built-in debugging of JavaScript via Eclipse, since JS isn't really its main focus anyways.
However, there are plug-ins which you can install to do JavaScript debugging. I believe the main one is the AJAX Toolkit Framework (ATF). It embeds a Mozilla browser in Eclipse in order to do its debugging, so it won't be able to handle cross-browser complications that typically arise when writing JavaScript, but it will certainly help.
Use the debugging tools supported by the browser. As mentioned above
Firebug for Firefox
Chrome Developer Tools from Chrome
IE Developer for IE.
That way you can detect cross-browser issues. To help reduce the cross-browser issues, use a javascript framework ie jQuery, YUI, moo tools, etc.
Below is a screenshot (javascript-debug.png) of what it looks lime in Firebug.
1) hit 'F12'
2) click the 'Script' tab and 'enable it' (if you are already on your page - hit 'F5' to re-load)
3) next to the 'All' drop down, there will be another dropdown to the right. Select your javascript file from that dropdown.
In the screenshot, I've set a break-point at line 42 by 'left-mouse-click'. This will enable you to break, inspect, watch, etc.
It's possible to debug JavaScript by setting breakpoints in Eclipse using the AJAX Tools Framework.
MyEclipse (eclipse based, subscription required) and Webclipse (an eclipse plug-in, currently free), from my company, Genuitec, have newly engineered (as of 2015) JavaScript debugging built in:
You can debug both generic web applications and Node.js files.
For Node.js there is Nodeclipse 0.2 with some bug fixes for chromedevtools