How do I fix script errors in Firefox?

How do I fix script errors in Firefox?

How to fix an unresponsive script error

1. Open the Browser Console. For a script in the web page, you can open the Firefox Browser Console, which may show what is causing the error.
2. Disable add-ons or run the browser in Safe Mode.
3. Debug error in script.

What causes script errors in Firefox?

Firefox may give you a “Warning: Unresponsive script” prompt that says “A script on this page may be busy, or it may have stopped responding. The script could be something on a web page you’re accessing, in an extension you installed, or even Firefox itself.

How do I debug a content script in Firefox?

Debugging content scripts

1. in the Firefox menu (or Tools menu if you display the menu bar or are on macOS), click Web Developer then Debugger.
2. press Ctrl + Shift + i ( Command + Option + i on macOS) and click Debugger.

How do I debug a browser extension?

Navigate to the chrome extensions management page at chrome://extensions and ensure developer mode is on. Click the Load Unpacked button and select the broken extension directory. After the extension is loaded, it should have three buttons: Details, Remove and Errors in red letters.

How do I use console in Firefox?

To open the developer console in Firefox, click on the Firefox Menu in the upper-right-hand corner of the browser and select More Tools > Browser Console. You can also use the shortcut Shift + ⌘ + J (on macOS) or Shift + CTRL + J (on Windows/Linux). The Browser console will open in a new window.

How do I run JavaScript in Firefox?

Firefox 57-71 Select Settings menu (3 horizontal lines ≡ icon in the upper right corner) -> Web Developer -> Scratchpad. Click the Run button on the Scratchpad toolbar to run your JavaScript code.

How do I debug JavaScript code in Firefox?

The Firefox JavaScript Debugger The JavaScript Debugger enables you to step through JavaScript code and examine or modify its state to help track down bugs. You can use it to debug code running locally in Firefox or running remotely, for example on an Android device running Firefox for Android.

Why is debugging JavaScript so difficult?

Debugging is one of the most painful parts of developing web apps. You have to deal with browser inconsistencies with HTML, CSS and javascript, let alone the difficulty of debugging javascript itself. Here’s a rundown of the Firefox extensions I use to manage this madness.

Why does Firefox hang when I run a script?

” This article describes why this could happen and possible solutions and workarounds. This error is telling you that Firefox thinks that a script may be running out of control and would make Firefox hang if nothing is done. The script could be something on a web page you’re accessing, in an extension you installed, or even Firefox itself.

How do I find and fix bugs in Firefox?

The Dev Tools within Firefox are extremely powerful which will speed up finding and fixing bugs. We’ll be using Raygun Crash Reporting to find the stack trace and the line of code the error occurred on. You can sign up for a free 14-day trial here.