Using A Dynamic Variable As Object Literal, Jquery Animate Function

Originally I had targetWater.animate({ 'width': '+=100%' Now I want to dynamically use 'width' or 'height' var direction = (targetWater.hasClass('x'))? 'width' : 'height'; ta

Solution 1:

Your approach doesn't work since direction is interpreted as a key, not a variable.

You can do it like so:

var animation = {};
var direction = targetWater.hasClass('x') ? "width" : "height"
animation[direction] = "+=100%";
targetWater.animate(animation);

The square brackets make it so you can have the key dynamically.

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If you would want the key "direction" with the square bracket notation you would write:

animation["direction"];

which is equivalent to:

animation.direction;

Solution 2:

Use bracket notation:

var anim = {};
anim[direction] = "+=100%";

Solution 3:

You variable does not get interpolated, you need to define it the following way:

var options = {};
options[direction] = "+=100%";

targetWater.animate( options , /*...*/

Solution 4:

I would suggest you to create it as a property and pass it to the .animate function. See below,

var direction = (targetWater.hasClass('x'))? "width" : "height";

var animProp = {};
animProp[direction] = "+=100%";

targetWater.animate(animProp, /*..*/);

Solution 5:

You could use "Array-like" (bracket) notation to create the "right"/dynamic property:

var animation = {};
animation[targetWater.hasClass('x'))? "width" : "height"] = "+=100%";

targetWater.animate(animation);