js에서 스크롤 막대를 사용자 정의하는 방법(코드 첨부)-JS 튜토리얼-php.cn

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js에서 스크롤 막대를 사용자 정의하는 방법(코드 첨부)

Aug 28, 2018 pm 04:58 PM

이 기사의 내용은 js에서 스크롤 막대를 사용자 정의하는 방법(코드 포함)입니다. 특정 참조 값이 있으므로 도움이 필요한 친구에게 도움이 되기를 바랍니다.

마우스 휠 이벤트

FireFox: DOMMouseScroll

e.detail 3까지 아래로 스크롤 -3

Non-FireFox까지 스크롤: onmousewheel

e.wheelDelta -120까지 아래로 스크롤 120까지 스크롤

사용자 정의 스크롤 막대 소스 코드

100

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&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;&quot;&gt;
&lt;head&gt;
    &lt;meta charset=&quot;utf-8&quot;&gt;
    &lt;title&gt;&lt;/title&gt;
    &lt;style&gt;
        * {
            margin: 0;            
            padding: 0;        
            }
 
        html,        
            body {
                        width: 100%;            
                        height: 100%;        
                  }
 
        #box {
            width: 100%;            
            height: 100%;            
            overflow: hidden;        
            }
 
        .ball {
                        width: 100%;            
                        height: 500px;        
                }
 
        #scroll {
                            width: 6px;            
                            height: 96%;            
                            position: fixed;            
                            top: 2%;            
                            right: 5px;           
                            border-radius: 3px;            
                            background-color: rgba(235, 233, 233, 0.5);            
                            z-index: 9998;            
                            opacity: 1;       
                  }
 
        #scrollBar {
                              position: absolute;            
                              z-index: 9999;            
                              width: 6px;            
                              height: 20px;            
                              border-radius: 3px;            
                              left: 0;            
                              top: 0;            
                              background-color: #383838;        
                     }
    &lt;/style&gt;
   &lt;/head&gt;
   &lt;body style=&quot;overflow:hidden;&quot;&gt;
    &lt;div id=&quot;box&quot;&gt;
        &lt;div id=&quot;content&quot;&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:lightpink;&quot;&gt;&lt;/p&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:blue;&quot;&gt;&lt;/p&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:yellow;&quot;&gt;&lt;/p&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:lightpink;&quot;&gt;&lt;/p&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:blue;&quot;&gt;&lt;/p&gt;
            &lt;p class=&quot;ball&quot; style=&quot;background-color:yellow;&quot;&gt;&lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div id=&quot;scroll&quot;&gt;
        &lt;div id=&quot;scrollBar&quot;&gt;&lt;/div&gt;
    &lt;/div&gt;&lt;/body&gt;&lt;/html&gt;&lt;script type=&quot;text/javascript&quot;&gt;
    var content = document.getElementById(&quot;content&quot;);    
   var box = document.getElementById(&quot;box&quot;);    
   var scroll = document.getElementById(&quot;scroll&quot;);    
   var scrollBar = document.getElementById(&quot;scrollBar&quot;);    
   var data = 30;    
   //  浏览器的可视高度减/页面的总高度*滚动栏的总高度=滚动按钮的高度
    var _eight;
    window.onresize = function (){
        init();
    }    
   function init (){
        _height = window.innerHeight * scroll.offsetHeight / content.offsetHeight;
        scrollBar.style.height = _height + &quot;px&quot;;
    }
    init();    //火狐
    box.addEventListener(&quot;DOMMouseScroll&quot;, function (e) {
        var e = e || event;        if (e.detail &gt; 0) {//向下滚动
            box.scrollTop += data;
        } else {//向上滚动
            box.scrollTop -= data;
        }        
   //浏览器的滚动距离/(页面的总高度-浏览器的可视高度)* (滚动栏的总高度-滚动按钮的高度)= 滚动的距离
        var _top = box.scrollTop * (scroll.offsetHeight - scrollBar.offsetHeight) / (content.offsetHeight - window.innerHeight);
        scrollBar.style.top = _top + &quot;px&quot;;
    });    //非火狐
    box.addEventListener(&quot;mousewheel&quot;, function (e) {
        var e = e || event;        
   if (e.wheelDelta &gt; 0) {//向上滚动
            box.scrollTop -= data;
        } else {//向下滚动
            box.scrollTop += data;
        }        
   //浏览器的滚动距离/(页面的总高度-浏览器的可视高度)* (滚动栏的总高度-滚动按钮的高度)= 滚动的距离
        var _top = box.scrollTop * (scroll.offsetHeight - scrollBar.offsetHeight) / (content.offsetHeight - window.innerHeight);
        scrollBar.style.top = _top + &quot;px&quot;;
    });
   &lt;/script&gt;