May 2001
Intermediate to advanced
720 pages
23h 24m
English
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Name
trace( ) Global Function — display a value in the Output window
Availability
Flash 4 and later
Synopsis
trace(value)
Arguments
- value
The expression to be resolved and then displayed in the Output window. If the resolved value of
valueis not a string, it is converted to a string before being sent to the Output window, according to the rules described in Table 3.2.
Description
The trace( ) function is a debugging tool used
only within the Test Movie mode of the Flash authoring environment.
Though unassuming in nature, trace( ) is
actually one of the fundamental components of ActionScript
programming; it allows us to check the value of a variable or
expression at any point during the playback of a movie.
Usage
Unfortunately trace( ) can be quite slow. Turn
off tracing under File → Publish Settings → Flash using the
Omit Trace Actions option.
Example
trace(firstName); // Output the value of firstName
trace(myClip); // Output the path to myClip
trace(myClip._x) // Output the x coordinate of myClip
trace("hello" + " there"); // Resolve then output the expressionSee Also
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.