移动端手指跟随移动效果

这是一个在手机端模拟PC端的鼠标跟随效果。

预览效果：请用手机端打开这个页面，看到右边的圆形图片，就按着它移动吧！

 

 

 

非常简单，代码如下：

html代码，为了方便展示，样式直接写在了标签内

<div id="bubble" style="position: fixed;right:5px;top:60%;width:50px;height: 50px;padding:3.5px;background:rgba(255,255,255,.64);border-radius: 25px;box-sizing:border-box;box-shadow: 0 0 10px rgba(0,0,0,.3);">
        <div style="width:43px;height: 43px;background:#efefef;border-radius: 25px;text-align: center;"><img style="max-width: 43px;max-height: 43px;border-radius: 25px;" src="http://img.ucweb.com/n/nav/15/6T3386aL-ha73KNPnf.jpeg" alt=""></div>
        <div style="position: absolute;bottom:2px;left:50%;margin-left:-16.9px;width:39px;height: 15px;background:url(data:image/png;base64,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)no-repeat center center;background-size:39px 15px;"></div>
    </div>

 

script代码：

<script>
    /* 浮标拖动动作 */
        var drag = document.getElementById('bubble'),
            winWeight = window.innerWidth,
            middleWin = winWeight/2,
            endTouchX = 0;

        drag.addEventListener('touchstart',function(ev){

            document.addEventListener('touchmove', function(ev){
                ev.preventDefault();
                var ev = ev.touches[0];
                drag.style.top=(ev.pageY-25)+'px';
                drag.style.left=(ev.pageX-25)+'px';
                endTouchX = ev.pageX;
            },false)
            document.addEventListener('touchend', function(ev){

                document.ontouchmove=null;
                document.ontouchend=null;

                drag.style.top = '60%';
                if(endTouchX > 0 && endTouchX < middleWin){//停靠左边
                    drag.style.left = '5px';
                }
                else{//停靠右边
                    drag.style.left = 'auto';
                    drag.style.right = '5px';
                }
                
            },false)
        },false)
    </script>

 

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