With javascript, the only way I'm familiar with is to create a timer. Initialize a variable called _timer or something, and a variable calld _waitFinished. then in the update part, write this:
JavaScript:
_timer+= (_timer<61) ? 1 : 0;
_waitFinished = (_timer==60) ? true : _waitFinished;
After that, when the timer variable reaches 61, it'll no longer count upwards, and the _waitFinished variable will now equal true once the timer reaches 61. We add 1 on there so that it doesn't constantly set waitFinished to true. From there, you'll check if _waitFinished is equal to true, and if it is, carry on with the rest of the code :D if not, do nothing, or something else.
If you need multiple timers, then make an object containing 2 arrays, if you don't understand that let me know I"ll show you.