This page describes how to set a breakpoint in the Firebug extension for Firefox.
Contents |
Introduction
You can set breakpoints in Firebug to stop the execution of a script on the line with the breakpoint. You can also add a condition to a breakpoint, so that the execution only pauses when that execution is met.
Instructions
Adding a breakpoint
To add a breakpoint to a script:
- In the lower right corner of Firefox, click the Firebug button
to start Firebug.
- Click the
tab to view the Script tab.
- Click on the line where you want to add a breakpoint.
Firebug adds a
icon to the line to signify a breakpoint.
Making a breakpoint conditional
To make a breakpoint conditional, right-click the breakpoint in Firebug to open an expression dialogue, and type the expression that should be true for the script execution to break on that line.
Viewing all breakpoints
To view a list of all breakpoints for a script, click the 
tab on the right part of the screen (with the Script tab active).