Learning ActionScript 2.0 in Adobe Flash 
Learning ActionScript 2.0 in Adobe Flash |
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| Best Practices and Coding Conventions for ActionScript 2.0 > ActionScript coding conventions > Keeping your ActionScript code in one place | |||
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Whenever possible, put your ActionScript 2.0 code in a single location, such as in one or more external ActionScript files or on Frame 1 of the Timeline (when placed on the timeline, the code is called a frame script).
If you put your ActionScript code in a frame script, put the ActionScript code on the first or second frame on the Timeline, in a layer called Actions, which is the first or second layer on the Timeline. Sometimes you might create two layers--an acceptable practice--for ActionScript to separate functions. Some Flash applications do not always put all your code in a single place (in particular, when you use screens or behaviors).
Despite these rare exceptions, you can usually put all your code in the same location. The following are the advantages of placing your ActionScript in a single location:
One of the most difficult parts of debugging a FLA file is finding all the code. After you find all the code, you must figure out how it interacts with other pieces of code along with the FLA file. If you put all your code in a single frame, it is much easier to debug because it is centralized, and these problems occur less frequently. For information on attaching code to objects (and decentralizing your code), see Attaching code to objects. For information on behaviors and decentralized code, see Using Flash.
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