How to output some log to console when developing flex application?

Question

I'm new to flex, and trying to write some demo applications. Now I have a very newbie question: How to output some log to console(or somewhere else I can see) in a flex application?

In other language, I can use:

System.out.println("mylog");
console.log("mylog");

But I don't know how to do the same in flex.

score 31 · Answer 1 · edited May 23 '17 at 10:31

31

As mentioned here, you can achieve this by doing

import flash.external.ExternalInterface;
ExternalInterface.call("console.log", "YourString");

edited May 23 '17 at 10:31

Community

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answered May 06 '14 at 01:51

SleepyCal

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score 16 · Accepted Answer · answered Jul 23 '12 at 10:29

16

You have several options here:

trace()
Flex loggers
Flex-console (uses MiniDebugTarget)

answered Jul 23 '12 at 10:29

Florent

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score 1 · Answer 3 · answered Jul 23 '12 at 10:27

1

The easiest way would be using "trace", a top level function, which you can use having an IDE and a Flash Debug Player running. An other solution would be the ThunderBolt logger.

answered Jul 23 '12 at 10:27

Florian Salihovic

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score 1 · Answer 4 · answered Jul 23 '12 at 10:51

I favour a class specific tracer called "TTrace" which can be enabled and disabled per a class. And I also write it for 1st line of each function I create. Tracing a story has often saved me on remote debugging where you cannot replicate errors that clients give you. You can then just enable or disable ttrace to clean up your outputs and enable them in the area you are updating or correcting.

SVN: https://code.google.com/p/darceys-as3-components/

ZIP: http://code.google.com/p/darceys-as3-components/downloads/list

To use TTrace

  // var definition
  private var t:Ttrace;

  // Inside constructor
  t = new Ttrace(true,"",true,false,"Debug console title",600,300);
  t.ttrace("hello");
  addChild(t);


  // Var dump
  t.ttrace("myvar = " + myVar);

  // Warning
  t.warn("warning");

  // Error
  t.error("An error has occured in .......");

Parmaters are:

  Ttrace(
        enabled:Boolean,
        applicationName:String="",
        useDebugBox:Boolean=false,
        debugBoxVisible:Boolean=true,
        debugBoxTitle:String="",
        debugBoxWidth:Number=800,
        debugBoxHeight:Number=400

)

How to output some log to console when developing flex application?

4 Answers4