gsap.defaults()

gsap.defaults() lets you set properties that should be inherited by ALL tweens (that don't have inherit:false set) unless overridden by that tween. General configuration settings that aren't Tween-specific (like units, autoSleep, and force3D) should be set using gsap.config() instead.

For example, if you want to change the default ease and duration of all tweens you'd do:

gsap.defaults({
  ease: "power2.in",
  duration: 1,
});