How to achieve floor scrolling effect using jquery-JS Tutorial-php.cn

How to achieve floor scrolling effect using jquery

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Release： 2018-06-14 15:03:08

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This article mainly introduces jquery to realize the floor scrolling effect in detail. It has certain reference value. Interested friends can refer to it.

The example of this article shares with everyone the jquery to realize the floor scrolling effect. The specific code displayed is for your reference. The specific content is as follows

html:

<!DOCTYPE html> 
<html lang="en"> 
<head> 
  <meta charset="UTF-8"> 
  <title>Document</title> 
  <link rel="stylesheet" href="css/base.css" rel="external nofollow" > 
  <style> 
    #header,#f1,#f2,#f3{ 
      width: 80%; 
      height: 500px; 
      background: yellow; 
      margin-left: 10%; 
      margin-top: 50px; 
    } 
    #f1{ 
      background: green; 
    } 
    #f2{ 
      background: red; 
    } 
    #f3{ 
      background: blue; 
    } 
    #lift{ 
      position: fixed; 
      top: 280px; 
      display: none; 
    } 
    .lift_btn{ 
      display: inline-block; 
      width: 50px; 
      height: 50px; 
      border: 1px solid #000; 
    } 
    .hover{ 
      background: red; 
    } 
  </style> 
</head> 
<body> 
  <p id="header"></p> 
  <p class="floor" id="f1"> 
    <p>第一层</p> 
  </p> 
  <p class="floor" id="f2"> 
    <p>第二层</p> 
  </p> 
  <p class="floor" id="f3"> 
    <p>第三层</p> 
  </p> 
  <p id="lift"> 
    <ul> 
      <li class="lift_item"> 
        <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="lift_btn"> 
          <span>1</span> 
        </a> 
      </li> 
      <li class="lift_item"> 
        <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="lift_btn"> 
          <span>2</span> 
        </a> 
      </li> 
      <li class="lift_item"> 
        <a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="lift_btn"> 
          <span>3</span> 
        </a> 
      </li> 
    </ul> 
  </p> 
 
  <script src="js/jquery.min.js"></script> 
  <script src="js/floor.js"></script> 
</body> 
</html>

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js:

(()=>{ 
  var $lift=$("#lift"); 
  $(window).scroll(()=>{ 
    var scrollTop=$(&#39;html,body&#39;).scrollTop(); 
    var $f1=$("#f1"); 
    var offsetTop=$f1.offset().top; 
    if(offsetTop<scrollTop+innerHeight/2) 
      $lift.fadeIn(500); 
    else 
      $lift.fadeOut(500); 
    var $floors=$(".floor"); 
    $floors.each((i,elem)=>{ 
      var $f=$(elem); 
      if($f.offset().top<scrollTop+innerHeight/2) 
        $lift.find(".lift_item:eq("+i+")").addClass("hover").siblings().removeClass("hover"); 
    }); 
  }); 
 
  $lift.children("ul").on("click","li",function(){ 
    var $li=$(this); 
    var i=$li.index(); 
    var $fi=$(".floor:eq("+i+")"); 
    var offsetTop=$fi.offset().top; 
    $("html").animate({ 
      scrollTop:offsetTop-60 
    },500) 
  }) 
})();

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The above is what I compiled for everyone. I hope it will be useful to everyone in the future. help.

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