使用 fullpage.js 删除和添加类时遇到问题

Question

I'm using animate.js and fullpage.js. My goal is to add a slideOutLeft animation when scrolling away from a section, and to add a slideInLeft animation when visiting a section.

My current code removes the slide in animation and applies the slide out animation, but never reapplies the slide in animation.

 $('#fullpage').fullpage({ afterLoad: function(anchorLink, index) { $('.text').addClass('animated slideInLeft'); }, onLeave: function(index, nextIndex, direction) { $('.text').removeClass('animated slideInLeft'); $('.text').addClass('animated slideOutLeft'); } });

 #first { background-color: yellow; } #second { background-color: blue; } .height { height: 100vh; }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/fullPage.js/2.7.9/jquery.fullPage.js"></script> <link href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.1/animate.css" rel="stylesheet" /> <link href="https://cdnjs.cloudflare.com/ajax/libs/fullPage.js/2.7.9/jquery.fullPage.css" rel="stylesheet" /> <div id="fullpage"> <div class="section height" id="first"> <h2 class="text">Something1</h2> </div> <div class="section height" id="second"> <h2 class="text">Something2.</h2> </div> <div class="section height" id="third"> <h2 class="text">Something else </h2> </div> </div>

Answer 1

For the onLeave , you must use the leaving section to find the text and apply the slideOutLeft in onLeave . Also remember that remove the slideOutLeft in afterLoad which the text can slide it out again.

$('#fullpage').fullpage({
  afterLoad: function(anchorLink, index) {
    $(this).find('.text').removeClass('animated slideOutLeft');
    $(this).find(".text").css("display","block");
    $(this).find('.text').addClass('animated slideInLeft');
  },
  onLeave: function(index, nextIndex, direction) {
    var leavingSection = $(this);
    $(leavingSection).find(".text").removeClass('animated slideInLeft');  

    $(leavingSection).find(".text").addClass('animated slideOutLeft');  
    }

});

Here is the example: https://jsfiddle.net/39gadbnv/1/