Checkout this video:
1. Open your Google Chrome browser.
2. Type chrome://settings/content in the address bar and press Enter.
4. Make sure that the switch next to “Allowed” is turned on.
1. Open your Mozilla Firefox browser.
For Web Developers
1.On your computer, open Chrome.
2.At the top right, click More .
4.At the bottom, click Show advanced settings.
5.Under “Privacy,” click Content settings.
Microsoft Internet Explorer
1.On your computer, open Internet Explorer.
2.Click Tools icon in the upper-right corner of the window., and then select Internet options from the drop-down list..
3.’ Select the Security tab..
4.’ In Internet Options dialog box, select Custom Level button.. The Security Settings – Internet Zone dialog box opens..’ In Security Settings – Internet Zone dialog box,’ scroll down to Scripting > Active scripting..’ status is set to Disabled’ then select Enable radio button under Active scripting > Scripting > Active scripting’ and then hit OK button at Warning! Any changes will take effect after you restart your computer.’ bottom warning message as shown image below:-