您如何确定地检测用户是否在浏览器中按下了后退按钮?
如何使用#URL系统在单页web应用程序中强制使用页面内返回按钮?
为什么浏览器的后退按钮不触发它们自己的事件!?
当前回答
你可以尝试popstate事件处理程序，例如:
window.addEventListener('popstate', function(event) {
// The popstate event is fired each time when the current history entry changes.
var r = confirm("You pressed a Back button! Are you sure?!");
if (r == true) {
// Call Back button programmatically as per user confirmation.
history.back();
// Uncomment below line to redirect to the previous page instead.
// window.location = document.referrer // Note: IE11 is not supporting this.
} else {
// Stay on the current page.
history.pushState(null, null, window.location.pathname);
}
history.pushState(null, null, window.location.pathname);
}, false);
注意:为了获得最佳结果，您应该只在希望实现逻辑的特定页面上加载此代码，以避免任何其他意外问题。
每当当前历史记录项更改(用户导航到新状态)时，就会触发popstate事件。当用户单击浏览器的后退/前进按钮时，或者当以编程方式调用history.back()、history.forward()、history.go()方法时，就会发生这种情况。
该事件。状态是事件的属性，等于历史状态对象。
对于jQuery语法，将它环绕起来(在文档准备好后添加监听器):
(function($) {
// Above code here.
})(jQuery);
参见:window。Onpopstate页面加载
参见单页应用程序和HTML5 pushState页面的示例:
<script>
// jQuery
$(window).on('popstate', function (e) {
var state = e.originalEvent.state;
if (state !== null) {
//load content with ajax
}
});
// Vanilla javascript
window.addEventListener('popstate', function (e) {
var state = e.state;
if (state !== null) {
//load content with ajax
}
});
</script>
这应该与Chrome 5+， Firefox 4+， IE 10+， Safari 6+， Opera 11.5+和类似的兼容。
其他回答
你可以尝试popstate事件处理程序，例如:
window.addEventListener('popstate', function(event) {
// The popstate event is fired each time when the current history entry changes.
var r = confirm("You pressed a Back button! Are you sure?!");
if (r == true) {
// Call Back button programmatically as per user confirmation.
history.back();
// Uncomment below line to redirect to the previous page instead.
// window.location = document.referrer // Note: IE11 is not supporting this.
} else {
// Stay on the current page.
history.pushState(null, null, window.location.pathname);
}
history.pushState(null, null, window.location.pathname);
}, false);
注意:为了获得最佳结果，您应该只在希望实现逻辑的特定页面上加载此代码，以避免任何其他意外问题。
每当当前历史记录项更改(用户导航到新状态)时，就会触发popstate事件。当用户单击浏览器的后退/前进按钮时，或者当以编程方式调用history.back()、history.forward()、history.go()方法时，就会发生这种情况。
该事件。状态是事件的属性，等于历史状态对象。
对于jQuery语法，将它环绕起来(在文档准备好后添加监听器):
(function($) {
// Above code here.
})(jQuery);
参见:window。Onpopstate页面加载
参见单页应用程序和HTML5 pushState页面的示例:
<script>
// jQuery
$(window).on('popstate', function (e) {
var state = e.originalEvent.state;
if (state !== null) {
//load content with ajax
}
});
// Vanilla javascript
window.addEventListener('popstate', function (e) {
var state = e.state;
if (state !== null) {
//load content with ajax
}
});
</script>
这应该与Chrome 5+， Firefox 4+， IE 10+， Safari 6+， Opera 11.5+和类似的兼容。
if (window.performance && window.performance.navigation.type == window.performance.navigation.TYPE_BACK_FORWARD) {
alert('hello world');
}
这是唯一一个解决方案，为我工作(这不是一个一页网站)。 它支持Chrome、Firefox和Safari浏览器。
Kotlin/JS (React)的解决方案:
import org.w3c.dom.events.Event
import kotlin.browser.document
import kotlin.browser.window
...
override fun componentDidMount() {
window.history.pushState(null, document.title, window.location.href)
window.addEventListener("popstate", actionHandler)
}
...
val actionHandler: (Event?) -> Unit = {
window.history.pushState(
null,
document.title,
window.location.href
)
// add your actions here
}
只有重新定义API(更改对象' history '的方法)，才能实现成熟的组件。 我将分享刚才写的课程。 在Chrome和Mozilla上测试 仅支持HTML5和ECMAScript5-6
class HistoryNavigation {
static init()
{
if(HistoryNavigation.is_init===true){
return;
}
HistoryNavigation.is_init=true;
let history_stack=[];
let n=0;
let current_state={timestamp:Date.now()+n};
n++;
let init_HNState;
if(history.state!==null){
current_state=history.state.HNState;
history_stack=history.state.HNState.history_stack;
init_HNState=history.state.HNState;
} else {
init_HNState={timestamp:current_state.timestamp,history_stack};
}
let listenerPushState=function(params){
params=Object.assign({state:null},params);
params.state=params.state!==null?Object.assign({},params.state):{};
let h_state={ timestamp:Date.now()+n};
n++;
let key = history_stack.indexOf(current_state.timestamp);
key=key+1;
history_stack.splice(key);
history_stack.push(h_state.timestamp);
h_state.history_stack=history_stack;
params.state.HNState=h_state;
current_state=h_state;
return params;
};
let listenerReplaceState=function(params){
params=Object.assign({state:null},params);
params.state=params.state!==null?Object.assign({},params.state):null;
let h_state=Object.assign({},current_state);
h_state.history_stack=history_stack;
params.state.HNState=h_state;
return params;
};
let desc=Object.getOwnPropertyDescriptors(History.prototype);
delete desc.constructor;
Object.defineProperties(History.prototype,{
replaceState:Object.assign({},desc.replaceState,{
value:function(state,title,url){
let params={state,title,url};
HistoryNavigation.dispatchEvent('history.state.replace',params);
params=Object.assign({state,title,url},params);
params=listenerReplaceState(params);
desc.replaceState.value.call(this,params.state,params.title,params.url);
}
}),
pushState:Object.assign({},desc.pushState,{
value:function(state,title,url){
let params={state,title,url};
HistoryNavigation.dispatchEvent('history.state.push',params);
params=Object.assign({state,title,url},params);
params=listenerPushState(params);
return desc.pushState.value.call(this, params.state, params.title, params.url);
}
})
});
HistoryNavigation.addEventListener('popstate',function(event){
let HNState;
if(event.state==null){
HNState=init_HNState;
} else {
HNState=event.state.HNState;
}
let key_prev=history_stack.indexOf(current_state.timestamp);
let key_state=history_stack.indexOf(HNState.timestamp);
let delta=key_state-key_prev;
let params={delta,event,state:Object.assign({},event.state)};
delete params.state.HNState;
HNState.history_stack=history_stack;
if(event.state!==null){
event.state.HNState=HNState;
}
current_state=HNState;
HistoryNavigation.dispatchEvent('history.go',params);
});
}
static addEventListener(...arg)
{
window.addEventListener(...arg);
}
static removeEventListener(...arg)
{
window.removeEventListener(...arg);
}
static dispatchEvent(event,params)
{
if(!(event instanceof Event)){
event=new Event(event,{cancelable:true});
}
event.params=params;
window.dispatchEvent(event);
};
}
HistoryNavigation.init();
// exemple
HistoryNavigation.addEventListener('popstate',function(event){
console.log('Will not start because they blocked the work');
});
HistoryNavigation.addEventListener('history.go',function(event){
event.params.event.stopImmediatePropagation();// blocked popstate listeners
console.log(event.params);
// back or forward - see event.params.delta
});
HistoryNavigation.addEventListener('history.state.push',function(event){
console.log(event);
});
HistoryNavigation.addEventListener('history.state.replace',function(event){
console.log(event);
});
history.pushState({h:'hello'},'','');
history.pushState({h:'hello2'},'','');
history.pushState({h:'hello3'},'','');
history.back();
```
看到这个:
history.pushState(null, null, location.href);
window.onpopstate = function () {
history.go(1);
};
它工作得很好……
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