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Explication détaillée des exemples de code d'utilisation du plug-in jQuery windowScroll

伊谢尔伦original: 2017-07-19 16:15:571253parcourir

Je souhaite partager avec vous un effet spécial implémenté à l'aide du plug-in jQuery windowScroll

HTML

<!doctype html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta content="" name="keywords" />
<meta content="" name="description" />
<meta name="author" content="codetker" />
<head>
<title>window对象滚动插件</title>
<link href="style/reset.css" rel="stylesheet" type="text/css">
<link href="style/style.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="js/jquery.codetker.windowScroll.js"></script>
</head>
<body scroll="no">
  <p class="wrap" style="dispaly:block;">
    <p class="stageControl">
      <ul>
        <li>stage1</li>
        <li>stage2</li>
        <li>stage3</li>
        <li>stage4</li>
        <li>stage5</li>
      </ul>
    </p>
    <p class="stage stage1">
      <p class="pageControl">
        <ul>
          <li>page1</li>
          <li>page2</li>
          <li>page3</li>
        </ul>
      </p>
      <p class="page page1"></p>
      <p class="page page2"></p>
      <p class="page page3"></p>  
    </p>
    <p class="stage stage2"></p>
    <p class="stage stage3"></p>
    <p class="stage stage4"></p>
    <p class="stage stage5"></p>
  </p>
<script type="text/javascript">
  $(document).ready(function(){
    $(".wrap").windowScroll({
      &#39;choose&#39; : 0,
      &#39;verticalSpeed&#39; : 2, //控制垂直滚动速度
      &#39;horizontalSpeed&#39; : 1,
      &#39;objControlUl&#39;: &#39;.wrap .stageControl&#39;
    });
    $(".stage1").windowScroll({
      &#39;choose&#39;: 1,
      &#39;verticalSpeed&#39; : 1,
      &#39;horizontalSpeed&#39; : 1,//控制水平滚动速度
      &#39;objControlUl&#39;: &#39;.stage1 .pageControl&#39;
    });
  });
</script>
</body>
</html>

CSS

@charset "utf-8";
/* CSS Document */
body{
  margin:0 0;
  padding:0 0;
  height:100%;
  width:100%;
  overflow: hidden;;
}
.wrap{
  font-family:"微软雅黑","宋体", Times, "Times New Roman", serif;
  font-size:14px;
  margin:0 0;
  padding:0 0;
  height:100%;
  width:100%;
  overflow:hidden;
}

.stage,.page{
  width: 100%;
  height: 100%;
}
.stage1{
  background-color:red;
}
.stage2{
  background-color:#fff;
}
.stage3{
  background-color:yellow;
}
.stage4{
  background-color:green;
}
.stage5{
  background-color:blue;
}
.page{
  float: left;
}
.page2{
  background-color: #666;
}
.page3{
  background-color: #ddd;
}
.stageControl{
  position: fixed;
}
.stageControl ul li{
  width: 100px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  cursor: pointer;
}
.stageControl ul li:hover{
  color: blue;
}
.pageControl{
  position: fixed;
  left: 200px;
}
.pageControl ul li{
  float: left;
  width: 50px;
  height: 25px;
  line-height: 25px;
  text-align: center;
  cursor: pointer;
}
.pageControl ul li:hover{
  color: blue;
}

JavaScript

/*
 * windowScroll 0.1
 * window滚动插件，上下左右，可选择是否回弹。参考搜狗欢迎页面
 * 兼容IE,FF,Chrome等常见浏览器
 */
 ;(function($,window,document,undefined){
   //定义构造函数
   var WindowObj=function(ele,opt){
     this.$element=ele; //最外层对象
     this.defaults={
       &#39;choose&#39; : 0,//默认为上下
       &#39;verticalSpeed&#39; : 1,
       &#39;horizontalSpeed&#39; : 1,
       &#39;objControlUl&#39;: null
     },
   
     this.options=$.extend({},this.defaults,opt );

    //阻止默认行为和冒泡,这里可以定义多个方法都要用到的函数
    this.stopDefaultAndBubble=function(e){
      e=e||window.event;
      if (e.preventDefault) {
        e.preventDefault();
      }
      e.returnValue=false;

      if (e.stopPropagation) {
        e.stopPropagation();
      }
      e.cancelBubble=true;
    }

    this.setSize=function(ele){
      $(ele).css({
        &#39;width&#39;:$(window).outerWidth()+&#39;px&#39;
      });
      //自动判断元素是否存在，对undefined赋css属性无意义
      $(ele).children(&#39;.stage&#39;).css({
        &#39;width&#39;:$(window).outerWidth()+&#39;px&#39;,
        &#39;height&#39;:$(window).outerHeight()+&#39;px&#39;
      });
      $(ele).children(&#39;.page&#39;).css({
        &#39;width&#39;:$(window).outerWidth()+&#39;px&#39;,
        &#39;height&#39;:$(window).outerHeight()+&#39;px&#39;
      });
    }
   }

   //给构造函数添加方法
   WindowObj.prototype={

     //上下滚动的方法
     verticalMove:function(){
       var obj=this.$element; //最外层对象
       var speed=this.options.verticalSpeed;
       var objControl=this.options.objControlUl;//控制按钮

       var windowHeight=$(window).height();
       var list=$(obj).children(&#39;.stage&#39;);
       var listMax=$(list).length;

       var is_chrome=navigator.userAgent.toLowerCase().indexOf(&#39;chrome&#39;)>-1;
       if(is_chrome){
         //判断webkit内核，供scrollTop兼容性使用
         windowobject=&#39;body&#39;;
       }else{
         //支持IE和FF
         windowobject=&#39;html&#39;;
       }
       var stop=0;

       //均设置为windows大小
       this.setSize(obj);

       //得到当前的垂直位置
       var stageIndex;
       function getIndex(){
         stageIndex=Math.round($(window).scrollTop()/windowHeight);
       } 

       //绑定键盘上下按键事件
       $(document).keydown(function(event) {
         /* 绑定keycode38，即向上按钮 */
         if (event.keyCode==38) {
           getIndex();
          setTimeout(function(){
            scrollStage(windowobject,stageIndex,1); //stageIndex为当前页码
          },100);
         }else if (event.keyCode==40) {//绑定40，即向下按钮
           getIndex();
          setTimeout(function(){
            scrollStage(windowobject,stageIndex,-1); //stageIndex为当前页码
          },100);
         }
       });

       //绑定滑轮功能的函数
       function handle(delta){
         getIndex();
        if (delta<0) {
          setTimeout(function(){
            scrollStage(windowobject,stageIndex,-1); //stageIndex为当前页码
          },100);
        }else{
          setTimeout(function(){
            scrollStage(windowobject,stageIndex,1); //stageIndex为当前页码
          },100);
        }

       }

       //判断滑轮，解决兼容性
       function wheel(event){
        var delta = 0;
        if (!event) event = window.event;
        if (event.wheelDelta) {
          delta = event.wheelDelta; 
          if (window.opera) delta = -delta;
        } else if (event.detail) {
          delta = -event.detail;
        }
        if (delta)
          handle(delta); //调用执行函数
      }

       //注册事件
       if (window.addEventListener) {
         window.addEventListener(&#39;DOMMouseScroll&#39;, wheel, false);
       }
       window.onmousewheel = document.onmousewheel = wheel;
       
       //绑定鼠标滚轮事件
       $(document).bind(&#39;mousedown&#39;, function(event) {
         if (e.which==2) {//which=2代表鼠标滚轮,即为中键
           this.stopDefaultAndBubble(e);
           //bugfix 搜狗浏览器的ie内核只有在定时器触发这个函数才生效
           setTimeout(function(){
             this.stopDefaultAndBubble(e);
           },10);
         }
       });

       //如果有ul li控制按钮
       if (objControl!=null) {
         $(objControl).delegate(&#39;li&#39;, &#39;click&#39;, function() {
           stageIndex=$(this).index();
           setTimeout(function(){
             scrollStage(windowobject,stageIndex,0);
           },100);
         });
       }

       function scrollStage(obj,stIndex,dir){//如果用scrollStage=function来指定的话没有声明提前，然后就会找不到这个函数了
         //obj为操作滚动的对象
        //stIndex为点击调用时应该滚动到的页面页码，按键和滚轮调用时默认为1(传入0)
        //dir传入滚动时的方向，0代表不滚动，1代表向上，-1代表向下
        var sIndex=stIndex;//!(dir)则stageIndex为要到的页码，否则为当前页码
        var windowobject=obj;
        var direction=0||dir; //接收参数封装,没有传入时暂时认为为0
        var target=windowHeight*sIndex; //目标页面距离文档顶部距离
       
        if ( !$(windowobject).is(&#39;:animated&#39;) ) {//当没有在滚动时
          if(!direction){ ////响应guider,此时stageIndex为目标页面页码
            if ($(window).scrollTop() > target) { //内容下移，窗口上移,上方出现弹痕
              direction=-1;
              $(windowobject).animate({
                "scrollTop": target +"px"
              },1000*speed,function(){
                crash_bottom(1,target,20,150); //调用撞击函数,先撞顶部,target变成当前页面了
              });
            }else if($(window).scrollTop() == windowHeight*sIndex){ //当前页面时
              direction=0;
              crash_bottom(1, target ,20,150); //模拟撞底部
            }else{
              direction=1;
              $(windowobject).animate({
                "scrollTop": target +"px"
              },1000*speed,function(){
                crash(1,target,20,150); //调用撞击函数,先撞底部

              });
            }
          }else{//响应鼠标滚轮和键盘上下，sindex为当前页面
            if(direction==1){
              if(sIndex==0){
                crash(1,target,20,150);
              }else{ //往上翻
                sIndex-=1;
                $(windowobject).animate({
                  "scrollTop":windowHeight*sIndex+"px"
                  },1000*speed,function(){
                    crash_bottom(1,windowHeight*sIndex,20,150); //调用撞击函数,往下翻内容往上，先撞顶部
                  }
                );
              }
            }else{
              if(sIndex==listMax){
                crash_bottom(1,target,20,150);
              }else{ //往下翻
                sIndex+=1;
                $(windowobject).animate({
                  "scrollTop":windowHeight*sIndex+"px"
                },1000*speed,function(){
                  crash(1,windowHeight*sIndex,20,150); //调用撞击函数,往上翻内容往下，先撞底部
                });

              }
            }
          }
        }
       }

      //撞击函数
      function crash_bottom(direction,termin,distant,time){
        if (!stop) {
          var scrollTop=$(window).scrollTop();
          if (direction==1) {
            direction=0;
            $(windowobject).animate({"scrollTop":"+="+distant+"px"},time,function(){
              crash_bottom(direction,termin,distant*0.6,time);
              if (distant<=15||time>150) {
                stop=1;//停止碰撞

                $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
                  stop=0;
                });
              }
            });
          }else if (direction==0) {
            direction=1;
            $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
              crash_bottom(direction,termin,distant*0.6,time);
              if (distant<=15||time>150) {
                stop=1;//停止碰撞

                $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
                  stop=0;
                });
              }
            });
          }
        }
      }
      function crash(direction,termin,distant,time){
        if (!stop) {
          var scrollTop=$(window).scrollTop();
          if (direction==1) {
            direction=0;
            $(windowobject).animate({"scrollTop":"-="+distant+"px"},time,function(){
              crash(direction,termin,distant*0.6,time);
              if (distant<=15||time>150) {
                stop=1;//停止碰撞

                $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
                  stop=0;
                });
              }
            });
          }else if (direction==0) {
            direction=1;
            $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
              crash(direction,termin,distant*0.6,time);
              if (distant<=15||time>150) {
                stop=1;//停止碰撞

                $(windowobject).animate({"scrollTop":termin+"px"},time,function(){
                  stop=0;
                });
              }
            });
          }
        }
      }

     },
     //左右滚动的方法
     horizontalMove:function(){
       var obj=this.$element; //最外层对象
       var speed=this.options.horizontalSpeed;
       var objControl=this.options.objControlUl;//控制按钮

       var windowWidth=$(window).width();
       var list=$(obj).children(&#39;.page&#39;);
       var listMax=$(list).length;

       var is_chrome=navigator.userAgent.toLowerCase().indexOf(&#39;chrome&#39;)>-1;
       if(is_chrome){
         //判断webkit内核，供scrollTop兼容性使用
         windowobject=&#39;body&#39;;
       }else{
         //支持IE和FF
         windowobject=&#39;html&#39;;
       }
       var stop=0;

       //均设置为windows大小
       this.setSize(obj);
       $(obj).css({&#39;width&#39;:windowWidth*listMax+&#39;px&#39;});

       var pageIndex; //当前页面页码(负数)
      function getPageIndex(){
        pageIndex=Math.round(parseInt($(obj).css("margin-left")) / windowWidth);
      }

      //绑定键盘左右按键事件
      $(document).keydown(function(event){
        //判断event.keyCode为39（即向右按钮）
        if (event.keyCode==39) {
          getPageIndex();
          scrollPage($(obj),pageIndex,-1); 
        }
        //判断event.keyCode为37（即向左按钮
        else if (event.keyCode==37) {
          getPageIndex();
          scrollPage($(obj),pageIndex,1);
        }
      });

      //如果有ul li控制按钮
       if (objControl!=null) {
         $(objControl).delegate(&#39;li&#39;, &#39;click&#39;, function() {
           pageIndex=$(this).index();
           setTimeout(function(){
             scrollPage(obj,pageIndex,0);
           },100);
         });
       }

      function scrollPage(obje,pIndex,dir){
        var windowobject=obje;
        var direction=0||dir;
        var pageIndex=pIndex;
        var dist=Math.round(parseInt($(obj).css("margin-left"))); //当前页距离左边的margin(负值)
        var aim=pageIndex*windowWidth*(-1);

        if (!$(windowobject).is(":animated")) {
          if(!direction){ //响应nav

            if (dist != aim) { //此时pageIndex为yearID.非负值
              $(windowobject).animate({"margin-left": aim + "px"},
                1000*speed);
            }else{
              direction=0;
              $(windowobject).animate({"margin-left":"+="+"50px"},500).animate({"margin-left":"-="+"100px"},500).animate({"margin-left":"+="+"50px"},500);
            }
          }else{ //响应键盘左右键
            if(direction==1){ //pageIndex为负值
              if(pageIndex==0){
                $(windowobject).animate({"margin-left":"+="+"50px"},500).animate({"margin-left":"-="+"100px"},500).animate({"margin-left":"+="+"50px"},500);  
              }else{
                pageIndex+=1; //显示左边内容，左键
                $(windowobject).animate({"margin-left":"+=" + windowWidth + "px"},
                  1000*speed);
              }
            }else{
              if(pageIndex== ((-1)*(listMax-1))){
                $(windowobject).animate({"margin-left":"-="+"50px"},500).animate({"margin-left":"+="+"100px"},500).animate({"margin-left":"-="+"50px"},500);  
              }else{
                pageIndex-=1;
                $(windowobject).animate({"margin-left":"-=" + windowWidth + "px"},
                  1000*speed);
              }
              
              
            }
          }
        }
      }

     }
   }

   //在插件中使用windowObj对象的方法，0为vertical，1为horizontal
   $.fn.windowScroll=function(options){
     //创建实体
     var windowObj=new WindowObj(this,options);
     //根据选择调用方法
     if (windowObj.options.choose==0) {
       return windowObj.verticalMove();
     }else if(windowObj.options.choose==1){
       return windowObj.horizontalMove();
     }else{//2之后的留扩展吧
       //add some functions
     }
   }
 })(jQuery,window,document);

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