js禁止浏览器，微信，及手机物理键的返回

XBack = {};

(function(XBack){
XBack.STATE = 'x-back';
XBack.element;

XBack.onPopState = function(event){
event.state === XBack.STATE && XBack.fire();
XBack.record(XBack.STATE); //初始化事件时，push一下
};

XBack.record = function(state){
history.pushState(state, null, location.href);
};

XBack.fire = function(){
var event = document.createEvent('Events');
event.initEvent(XBack.STATE, false, false);
XBack.element.dispatchEvent(event);
};

XBack.listen = function(listener){
XBack.element.addEventListener(XBack.STATE, listener, false);
};

XBack.init = function(){
XBack.element = document.createElement('span');
window.addEventListener('popstate', XBack.onPopState);
XBack.record(XBack.STATE);
};

})(XBack); // 引入这段js文件

在所需要的页面上使用 

XBack.init();
XBack.listen(function(){});