Check if eventListener exist?

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How do I check if an eventListener exist? If it exist, I want to remove it with removeEventListener.

addEventListener(MouseEvent.MOUSE_DOWN, btn_Click3)

addEventListener(MouseEvent.MOUSE_DOWN, btn_Click2)

addEventListener(MouseEvent.MOUSE_DOWN, btn_Click)

ActionScript

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kgladCorrect answer

Community Expert

use the code i showed,

hasEventListener()

in any frame where the object exists.

kglad

Community Expert

use the hasEventListener() method:

if(btn_3.hasEventListener(MouseEvent.MOUSE_DOWN){

btn_3.removeEventListener(MouseEvent.MOUSE_DOWN,btn_Click3);

}

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Z

ZainuuAuthor

Inspiring

Hi, what if btn_3 is in another frame, how do I check it?

otherwise I will get error:

TypeError: Error #1009: Cannot access a property or method of a null object reference.

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kglad

Community Expert

if an object doesn't exist, you can't reference it with actionscript. if it exists elsewhere (like frame 3), you can reference it elsewhere (like frame 3).

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