背景：项目中有一个场景要监听android手机物理返回键，但是app和js的中间件又没提供这个事件的监听，只能百度纯js实现了第一步：
第一步：xback.js
;!function(pkg, undefined){
var STATE = 'x-back';
var element;
var onPopState = function(event){

event.state === STATE && fire();
}
var record = function(state){

history.pushState(state, null, location.href);
}
var fire = function(){

var event = document.createEvent('Events');

event.initEvent(STATE, false, false);

element.dispatchEvent(event);
}
var listen = function(listener){

element.addEventListener(STATE, listener, false);

}
;!function(){

element = document.createElement('span');

window.addEventListener('popstate', onPopState);

this.listen = listen;

this.record = record(STATE);

record(STATE);
}.call(window[pkg] = window[pkg] || {});
}('XBack');

;!function(pkg, undefined){
var STATE = 'x-back';
var element;
var onPopState = function(event){

event.state === STATE && fire();
}
var record = function(state){

history.pushState(state, null, location.href);
}
var fire = function(){

var event = document.createEvent('Events');

event.initEvent(STATE, false, false);

element.dispatchEvent(event);
}
var listen = function(listener){

element.addEventListener(STATE, listener, false);

}
;!function(){

element = document.createElement('span');

window.addEventListener('popstate', onPopState);

this.listen = listen;

this.record = record(STATE);

record(STATE);
}.call(window[pkg] = window[pkg] || {});
}('XBack');
第二步：
第二步：
加载xback.js文件



自定义组件remote-script可以参考我另外的一篇文章：https:///article/178777.htmhttps:///article/178777.htm第三步：
第三步：监听返回键事件
methods: {

// JavaScript监听手机物理返回键

loadXBack () {

window.XBack.listen(() => {

this.dialog = this.$createDialog({

type: 'confirm',

content: `确定返回吗？`,

confirmButton: {

text: '确定',

active: true,

disabled: false

},

cancelButton: {

text: '取消',

active: false,

disabled: false

},

onConfirm: () => {

this.dialog.hide()

this.close()

},

onCancel: () => {

this.dialog.hide()

window.history.pushState('x-back', null, window.location.href)

}

})

this.dialog.show()

})

},
}

methods: {

// JavaScript监听手机物理返回键

loadXBack () {

window.XBack.listen(() => {

this.dialog = this.$createDialog({

type: 'confirm',

content: `确定返回吗？`,

confirmButton: {

text: '确定',

active: true,

disabled: false

},

cancelButton: {

text: '取消',

active: false,

disabled: false

},

onConfirm: () => {

this.dialog.hide()

this.close()

},

onCancel: () => {

this.dialog.hide()

window.history.pushState('x-back', null, window.location.href)

}

})

this.dialog.show()

})

},
}
以上就是本文的全部内容，希望对大家的学习有所帮助。