30 Second Countdown Timer

[stephenc39283997]

Hi, I am trying to create a countdown that counts down from 30 seconds for my game.

This is my code:

var secondsLeft = 30;
this.countdown_txt.text = secondsLeft;
var timerId = setInterval(countdown, 1000);
function countdown(){
if(secondsLeft == 0){
     //doStuff
}
else{
     secondsLeft--;
     this.countdown_txt.text = secondsLeft;
     }
}

When I run this I get an error that occurs on line 11: Uncaught TypeError: Cannot set property 'text' of undefined.

I'm not sure why this is the case as I have a similar setup for counting the score when clicking on a movieclip and that works fine. Any help would be appreciated.

[kglad · Accepted solution]

"this" is undefined in countdown().  try:

var timerId = setInterval(countdown.bind(this), 1000); 

[stephenc39283997]

Yup that's exactly it. Thanks a lot.

[kglad]

you're welcome.

[HenriDREYSSE]

Hi,

I have made a clock on a pdf file 

But I want to insert a countdown of 120"  in a pdf document (not in a HLML File)

I think I 'll have a text field with the result .... with which properties?

an action button start  field with which properties  ?

a action button reset with which properties ?

Can you help me please?

Thank you by advance

Henri