完美解决safari、微信浏览器下拉回弹效果，只保留局部回弹效果。
CSS代码
.box{ overflow: auto; -webkit-overflow-scrolling: touch;}HTML代码
<body class="box"> <div class="scroll" style="height:1500px"> </div> </body>JS代码
var overscroll = function(el) { el.addEventListener(‘touchstart‘, function() { var top = el.scrollTop ,totalScroll = el.scrollHeight ,currentScroll = top + el.offsetHeight; if(top === 0) { el.scrollTop = 1; }else if(currentScroll === totalScroll) { el.scrollTop = top - 1; } }); el.addEventListener(‘touchmove‘, function(evt) { if(el.offsetHeight < el.scrollHeight) evt._isScroller = true; });} overscroll(document.querySelector(‘.scroll‘));document.body.addEventListener(‘touchmove‘, function(evt) { if(!evt._isScroller) { evt.preventDefault(); }});
