Omitting the parameter returns the current value (getter), whereas defining the parameter sets the value (setter) and returns the instance itself for easier chaining.
GreenSock Docs
TweenMax
.repeatDelay()
Gets or sets the amount of time in seconds (or frames for frames-based tweens) between repeats.
Parameters
value: Number
(default = NaN
) — Omitting the parameter returns the current value (getter), whereas defining the parameter sets the value (setter) and returns the instance itself for easier chaining.
Returns : *

Details
Gets or sets the amount of time in seconds (or frames for frames-based tweens) between repeats. For example, if repeat
is 2 andrepeatDelay
is 1, the tween will play initially, then wait for 1 second before it repeats, then play again, then wait 1 second again before doing its final repeat. You can set the initial repeatDelay
value via the vars
parameter, like:
TweenMax.to(mc, 1, {x:100, repeat:2, repeatDelay:1});
This method serves as both a getter and setter. Omitting the parameter returns the current value (getter), whereas defining the parameter sets the value (setter) and returns the instance itself for easier chaining, likemyTween.repeat(2).yoyo(true).repeatDelay(0.5).play();
var repeatDelay = myTween.repeatDelay(); //gets current repeatDelay value
myTween.repeatDelay(2); //sets repeatDelay to 2