如何在 .hover() 中使用油门； jQuery？

Question

I'm trying to find the most concise way to throttle a hover function with jQuery. There are many examples of this but they all seem to not work as intended. For example the use of $.throttle doesn't error but it stops the animation from working altogether. This is the code which I'm trying to throttle:

jQuery(document).ready(function($){
  var $navTab = $('.nav-tab-parent');

  function moveNavTab(e) {
      TweenLite.to($navTab, 0.3, {
      css: {
        left: e.pageX,
        top: e.pageY
      }
    });
  }

  $(window).on('mousemove', moveNavTab);

  $(".toggle-bars").hover( // this is the .hover() function I need to throttle.
    function() {
      $(".nav-tab-parent").animate({
        opacity: 1
      });
      $(".nav-tab-parent").delay(10).animate({
        width: "36px",
        easing: "swing"
      });
      $(".nav-tab").html("MENU");
      $(".nav-tab").delay(350).animate({
        opacity: 1
      });
    }, function() {
      $(".nav-tab").animate({
        opacity: 0
      });
      $(".nav-tab-parent").delay(150).animate({
        width: "0",
        opacity: 0,
        easing: "swing"
      });
    }
  );
});

I must be missing something here but can't figure it out. Any help in achieving this would be greatly appreciated!

Answer 1

I suppose you are trying to achieve something like this. You could try to use .stop() method - it will stop current animation and after that you can run next one. Try to play with arguments to choose what best will suit your case.

 let $hover = $('.hover-box'), $target = $('.animated-box'); function show() { $target.stop(true, true).animate({ opacity: 1, }) } function hide() { $target.stop(true, true).animate({ opacity: 0 }) } $hover.hover(show, hide)

 .hover-box, .animated-box { width: 100px; height: 100px; border-radius: 8px; } .hover-box { border: 1px solid #ddd; display: inline-flex; align-items: center; justify-content: center; text-transform: uppercase; font-family: sans-serif; cursor: pointer; margin-bottom: 16px; } .hover-box:hover { background: #ddd; } .animated-box { opacity: 0; background: gold; }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div class='hover-box'>Hover</div> <div class='animated-box'></div>

Answer 2

Changed to use entirely GSAP and relying on .timescale() see the documentation — didn't know the underlying structure so will need some configuring but the basis is there. GSAP has a crazy deep documentation but should be familiar enough to jquery with object animations.

 var tl = gsap.timeline().timeScale(-1); tl.fromTo(".nav-tab-parent", { autoAlpha: 0, duration: 1 }, { autoAlpha: 1, duration: 1 }); $(".toggle-bars").hover(function() { tl.timeScale(1); }, function() { tl.timeScale(-1); });

 <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.8.0/gsap.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div class="toggle-bars">.toggle-bars <div class="nav-tab-parent">.nav-tab-parent</div> </div>