How to Enable JavaScript in Internet Explorer

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Internet Explorer 11 is designed to run JavaScript scripts by default, but can be configured by a third party to prevent active scripts from running. Enabling the "Active scripting" option enables JavaScript in IE. Note that Internet Explorer can't run Java applets unless Java is installed and running on your computer. The Java plugin is not loaded if you run Internet Explorer from the Start screen in Windows 8.1; you need to launch the browser from the desktop. Furthermore, the Java plugin does not work in Windows RT.


Enabling JavaScript

Click the gear icon in Internet Explorer 11 and choose "Internet Options" from the menu to display the Internet Options window. Select the "Security" tab, select the "Internet" zone and then click the "Custom level" button. Click the "Enable" radio button under Active Scripting in the Scripting section. Click "OK" to apply the new settings and then restart the Web browser.


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Troubleshooting JavaScript and Java Problems

If Internet Explorer is having trouble displaying JavaScript, launch it in safe mode. Press "Windows-X," click "Command Prompt" to launch the utility, type "C:\Program Files\Internet Explorer\iexplore.exe" -extoff and press "Enter." If JavaScript still doesn't work, reset Internet Explorer. Select the "Advanced" tab in the Internet Options window, click "Reset" and then click the "Reset" button to reset the browser. Even if Active Scripting is enabled, Internet Explorer can't display Java applets without Java. Open the "Free Java Download" page, click the "Free Java Download" button and save the installer on your computer. Double-click the installer, follow the instructions to install the software and then restart your computer.