Selenium IDE 给出 SyntaxError: JSON.parse: bad control character in string literal

Question

I installed Selenium IDE 2.9.1. After starting Selenium IDE and pressing File/Resent test cases I receive an error message:

There was an unexpected error. Msg: TypeError: this.app is undefined Url: chrome://selenium-ide/content/editor.js, line: 1013, column: 7 Editor.prototype.populateFormatsPopup@chrome://selenium-ide/content/editor.js:1013:7 onpopupshowing@chrome://selenium-ide/content/selenium-ide-sidebar.xul:1:1

Also when I open Selenium IDE I receive an error message:

There was an unexpected error. Msg: SyntaxError: JSON.parse: bad control character in string literal at line 1 column 1905 of the JSON data Url: chrome://selenium-ide/content/plugin.js, line: 17, column: 22 PluginManager.prototype.load@chrome://selenium-ide/content/plugin.js:17:22 PluginManager@chrome://selenium-ide/content/plugin.js:7:3 Application@chrome://selenium-ide/content/application.js:26:26 Editor@chrome://selenium-ide/content/editor.js:30:14 SidebarEditor@chrome://selenium-ide/content/sidebar-editor.js:22:5 onload@chrome://selenium-ide/content/selenium-ide-sidebar.xul:1:1

System:

• Firefox: 43 Language Hungarian
• Selenium IDE 2.9.1
• Windows 10*

I already removed and reinstalled selenium plugin from here:

https://addons.mozilla.org/en-US/firefox/addon/selenium-ide/

Also I removed other FF plugins.

Any idea how to solve this problem? As actually I can not use Selenium in FF...

Answer 1

Seems like an issue with Selenium IDE: https://code.google.com/p/selenium/issues/detail?id=8103

Suggested solution is as follows:

1. Type "about:config" in the address bar of Mozilla Firefox.
2. Change the settings to "default" for extensions.javaformatters@seleniumhq.org.install-event-fired and extensions.selenium-ide.pluginsData.
3. Close and Now launch the IDE again.

Answer 2

Perhaps you are experiencing this because of a conflict with a JavaScript framework, such as mootools.

In my case,

1. executeScript on document.title = 'Hello World';
   • initally works
2. I load a web page using an old copy of mootools
3. executeScript on document.title = 'Hello World';
   • no longer works with the error message "Failed: HH:MM:SS JSON.parse is not a function"