微信下拉出现黑框IP地址信息修改办法

exports.stopDrop = function() {
var overscroll = function(el) {
el.addEventListener('touchstart', function() {
var top = el.scrollTop;
var totalScroll = el.scrollHeight;
var 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;
}
});
}
for(var i = 0; i < document.querySelectorAll('.scroll').length; i++) {
overscroll(document.querySelectorAll('.scroll')[i]);
}
document.body.addEventListener('touchmove', function(evt) {
if(!evt._isScroller) {
evt.preventDefault();
}
});
}

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