Add jQuery Library in Firebug To run jQuery Code

1. Enable Firebug.

2. Goto Console

3. Write the below code to include jQuery library.

var s = document.createElement('script');
s.setAttribute('src', 'http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js');
document.body.appendChild(s);

5. Do whatever you want to do, afterwards like below.

$("body").find(".fwb").each(function(){
    console.log($(this).text());
});

6. Press run and Enjoy.