Firebug performs JavaScript dynamically
May 25, 2021 Firebug
You can use Firebug to write and execute a JavaScript in real time.
This is to test and make sure that the script works, which is a good way to deploy JavaScript code before you deploy it in production.
Open Firebug and Script to display the command line, as follows:
alert("w3cschool.cn")
As soon as you press Enter, you can see the output of the code. As shown in the figure:
