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<!DOCTYPE html> <html> <meta name="viewport" content="width=device-width, initial-scale=1"> <body ontouchstart="countTouches(event)" ontouchend="countTouches(event)"> <h1>TouchEvent 的 targetTouches 属性</h1> <p>触摸此页面上的任何元素。</p> <p>触摸当前元素的手指数为<span id="demo">0</span>。</p> <p>targetTouches 属性返回一组触摸对象，每个触摸对象对应于触摸同一 ELEMENT 的每个手指。</p> <p><strong>注意：</strong>触摸事件仅适用于触摸设备。</p> <script> function countTouches(event) { var x = event.targetTouches.length; document.getElementById("demo").innerHTML = x; } </script> </body> </html>