Chrome
            
              1. Go to Settings > Privacy and Security
              2. Select Site Settings
              3. Scroll down to JavaScript and ensure it’s set to Allowed
            
           
          
          
            Firefox
            
              1. Go to Options > Privacy and Security
              2. Scroll to Permissions and check that JavaScript is enabled
            
           
          
          
            Safari
            
              1. Go to Preferences > Security
              2. Enable JavaScript