js 个人整理的兼容性代码

1.document.addEventListener("mousewheel", function(event) {//FF
if (event.wheelDelta > 0) {
prev();
} else {
next();
}
});
document.addEventListener("DOMMouseScroll", function(event) {//其他
if (event.detail > 0) {
next();
} else {
prev();
}
});

2.// Is it webkit
var isWebkit = 'WebkitAppearance' in document.documentElement.style || typeof document.webkitHidden != "undefined";