完美解决safari、微信浏览器下拉回弹效果-CFANZ编程社区

完美解决safari、微信浏览器下拉回弹效果

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();
    }
});

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