显示触摸时各种状态的实时坐标在屏幕中显示的演示demo代码:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="apple-touch-fullscreen" content="yes" />
    <meta name="format-detection" content="telephone=no" />
    <meta name="apple-mobile-web-app-capable" content="yes" />
    <meta name="apple-mobile-web-app-status-bar-style" content="black" />
    <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no">  
    <title>触摸</title>
</head>
<body>
<div id="touch" style="margin-top:50%;margin-left:20%;">在手机端模式打开</div>
<script>
    function tou (){
        //在网页中添加监听触摸开发、触摸中、触摸结束事件
        document.addEventListener('touchstart',touch,false);
        document.addEventListener('touchmove',touch,false);
        document.addEventListener('touchend',touch,false);
             //触摸事件调用的函数
             function touch (event){
             //event 当前的事件对象,包含当前事件的一些信息,比如:坐标信息
             //var event = event || window.event 浏览器兼容
             var event = event || window.event;
             //获取id
             var local = document.getElementById("touch");
             //event.type 获取当前事件对象的类型
             //event.touches[0] 事件对象中的第一个手指
             // event.touches[0].clientX 事件对象中的第一个手指在客户端X坐标
             //event.changedTouches[0].clientX 事件对象中触摸块改变的时候的坐标
             switch(event.type){
                case "touchstart":
                    local.innerHTML ="Touchstart (" + event.touches[0].clientX +"," + event.touches[0].clientY +")";
                    break;
                case "touchmove":
                    event.preventDefault();
                    local.innerHTML ="Touchmove (" + event.touches[0].clientX +"," + event.touches[0].clientY +")";
                    break;
                case "touchend":
                    local.innerHTML ="Touchend (" + event.changedTouches[0].clientX +"," + event.changedTouches[0].clientY +")";
                    break;
            }
        }
 
    }
 
    window.addEventListener('load',tou,false);
    
</script>
</body>
</html>

 


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