How to Enable copy & paste in Mozilla

Some website blocks the copy & paste on the clipboard. This may due to some reasons but one can easily enable the copy & paste on the clipboard in mozilla using the following steps.

Step : 1
Add the following lines in the url address bar of mozilla
about:config and hit enter
A warning message will appear, click on “I will be careful” button.

Step : 2
search “dom.event.clipboardevents.enabled” in the search field. Set its value to false.

You are done enabling copy and paste in you browser.