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Tweening Parameter String Values

ilikepooz test
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Go to solution Solved by OSUblake,

Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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I'm trying to use one Tweenmax call to handle multiple tween types by using function parameters instead of declaring all the properties individually.


declaring the property as a string works fine, here i can animate 'top', 'scale', whatever

=> TweenMax.to(p_target, p_time, {'top' :  p_value} );
however passing the 'top' property as a string parameter logs invalid tween value
=> TweenMax.to(p_target, p_time, {p_type :  p_value} );
is there a way to use parameters or variables to declare which property should be animated?
thanks in advance.


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  • Solution

You're initializing the object with the property name "p_type". To provide a dynamic value for the name you would either need to create the object beforehand or use an ES6 computed property name. To use computed property names you will need to use a compiler like Babel, Traceur, or TypeScript since it's a new feature.

var foo = { bar: { baz: { key: "x" }}};

play("y", 200);

function play(key, value) {
  var myObject = {};
  myObject[key] = value;
  TweenLite.to("#box", 1, myObject);
  // ES6 Computed property name
  TweenLite.to("#box", 1, { [foo.bar.baz.key]: value });  

See the Pen af7229a398116492a29e198ce5d341e5 by osublake (@osublake) on CodePen

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