jQuery动画-获取元素的未来位置

Question

I'm having trouble getting the position of an element because my animation is long and $(this).position().top is calculated too early.

How can I get a future position value of an element before it animates to that position?

Answer 1

That's not what you want. You want to get the position of the element AFTER the animation has completed. You need to add a callback function to your animation, and call the position from inside that callback function. Here you go ->

$("whatever").animate({
  //do stuff for animation
}, 'delay', function(){
  //our animation has completed, this is our callback function.
  //we can now successfully get our position.
  $(this).position().top
});

Hope this helps!

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