How to Detect Browser Back Button event - Cross Browser

Question

How do you definitively detect whether or not the user has pressed the back button in the browser    How do you enforce the use of an in-page back button inside a single page web application using a  URL system    Why on earth don t browser back buttons fire their own events

User · Answer

The document mouseover does not work for IE and FireFox  However I have tried this      document  ready function        setInterval function          var  sample      body        if   sample is   hover            window innerDocClick   true        else         window innerDocClick   false                    window onhashchange   function        if  window innerDocClick          Your own in-page mechanism triggered the hash change     else         Browser back or forward button was pressed          This works for Chrome and IE and not FireFox  Still working to get FireFox right  Any easy way on detecting Browser back forward button click are welcome  not particularly in JQuery but also AngularJS or plain Javascript

User · Answer

Note  As per Sharky s feedback  I ve included code to detect backspaces   So  I ve seen these questions frequently on SO  and have recently run into the issue of controlling back button functionality myself  After a few days of searching for the best solution for my application  Single-Page with Hash Navigation   I ve come up with a simple  cross-browser  library-less system for detecting the back button   Most people recommend using   window onhashchange   function        blah blah blah     However  this function will also be called when a user uses on in-page element that changes the location hash  Not the best user experience when your user clicks and the page goes backwards or forwards   To give you a general outline of my system  I m filling up an array with previous hashes as my user moves through the interface  It looks something like this   function updateHistory curr        window location lasthash push window location hash       window location hash   curr      Pretty straight forward  I do this to ensure cross-browser support  as well as support for older browsers  Simply pass the new hash to the function  and it ll store it for you and then change the hash  which is then put into the browser s history    I also utilise an in-page back button that moves the user between pages using the lasthash array  It looks like this   function goBack         window location hash   window location lasthash window location lasthash length-1         blah blah blah     window location lasthash pop        So this will move the user back to the last hash  and remove that last hash from the array  I have no forward button right now    So  How do I detect whether or not a user has used my in-page back button  or the browser button   At first I looked at window onbeforeunload  but to no avail - that is only called if the user is going to change pages  This does not happen in a single-page-application using hash navigation   So  after some more digging  I saw recommendations for trying to set a flag variable  The issue with this in my case  is that I would try to set it  but as everything is asynchronous  it wouldn t always be set in time for the if statement in the hash change   onMouseDown wasn t always called in click  and adding it to an onclick wouldn t ever trigger it fast enough   This is when I started to look at the difference between document  and window  My final solution was to set the flag using document onmouseover  and disable it using document onmouseleave   What happens is that while the user s mouse is inside the document area  read  the rendered page  but excluding the browser frame   my boolean is set to true  As soon as the mouse leaves the document area  the boolean flips to false   This way  I can change my window onhashchange to   window onhashchange   function         if  window innerDocClick            window innerDocClick   false        else           if  window location hash      undefined                 goBack              else               history pushState     document title  window location pathname               location reload                        You ll note the check for  undefined  This is because if there is no history available in my array  it returns undefined  I use this to ask the user if they want to leave using a window onbeforeunload event   So  in short  and for people that aren t necessarily using an in-page back button or an array to store the history   document onmouseover   function           User s mouse is inside the page      window innerDocClick   true     document onmouseleave   function           User s mouse has left the page      window innerDocClick   false     window onhashchange   function         if  window innerDocClick              Your own in-page mechanism triggered the hash change       else             Browser back button was clicked           And there you have it  a simple  three-part way to detect back button usage vs in-page elements with regards to hash navigation   EDIT   To ensure that the user doesn t use backspace to trigger the back event  you can also include the following  Thanks to  thetoolman on this Question      function                  this swallows backspace keys on any non-input element         stops backspace - gt  back             var rx    INPUT SELECT TEXTAREA i         document  bind  keydown keypress   function e           if  e which    8       8    backspace             if  rx test e target tagName     e target disabled    e target readOnly                    e preventDefault

User · Answer

if  window performance  amp  amp  window performance navigation type    window performance navigation TYPE BACK FORWARD      alert  hello world        This is the only one solution that worked for me  it s not a onepage website   It s working with Chrome  Firefox and Safari

User · Answer

I tried the above options but none of them is working for me  Here is the solution  if window event               if window event clientX  lt  40  amp  amp  window event clientY  lt  0                        alert  Browser back button is clicked                         else                       alert  Browser refresh button is clicked                         Refer this link http   www codeproject com Articles 696526 Solution-to-Browser-Back-Button-Click-Event-Handli for more details

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I solved it by keeping track of the original event that triggered the hashchange  be it a swipe  a click or a wheel   so that the event wouldn t be mistaken for a simple landing-on-page  and using an additional flag in each of my event bindings  The browser won t set the flag again to false when hitting the back button   var evt   null  canGoBackToThePast   true       next-slide   on  click touch   function e        evt   e      canGobackToThePast   false         your logic  remember to set the  canGoBackToThePast  flag back to  true  at the end of it

User · Answer

My variant  const inFromBack   performance  amp  amp  performance getEntriesByType   navigation    map  nav   gt  nav type   includes   back forward

User · Answer

I was able to use some of the answers in this thread and others to get it working in IE and Chrome Edge  history pushState for me wasn t supported in IE11   if  history pushState          Chrome and modern browsers     history pushState null  document title  location href       window addEventListener  popstate   function  event            history pushState null  document title  location href             else         IE     history forward

User · Answer

See this   history pushState null  null  location href       window onpopstate   function              history go 1            it works fine

User · Answer

lt input style  display none  id    pageLoaded  value     gt       document  ready function              if        pageLoaded   val      1                       pageLoaded   val 1               else               shared isBackLoad   true                    pageLoaded   val 1                     Call any function that handles your back event                      The above code worked for me  On mobile browsers  when the user clicked on the back button  we wanted to restore the page state as per his previous visit

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Browser  https   jsfiddle net Limitlessisa axt1Lqoz   For mobile control  https   jsfiddle net Limitlessisa axt1Lqoz show    x000D   x000D    document  ready function     x000D       body   on  click touch     share   function e    x000D          share   fadeIn    x000D        x000D      x000D   x000D     geri butonunu yakalama x000D  window onhashchange   function e    x000D    var oldURL   e oldURL split      1   x000D    var newURL   e newURL split      1   x000D   x000D    if  oldURL     share     x000D          share   fadeOut    x000D      e preventDefault    x000D      return false  x000D      x000D      console log  old   oldURL   new   newURL   x000D    x000D   share position fixed  display none  top 0  left 0  width 100   height 100   background rgba 0 0 0  8   color white  padding 20px  x000D   lt  DOCTYPE html gt  x000D   lt html gt  x000D   x000D   lt head gt  x000D       lt title gt Back Button Example lt  title gt  x000D       lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   x000D   lt  head gt  x000D   x000D   lt body style  text-align center  padding 0   gt  x000D       lt a href   share  id  share  gt Share lt  a gt  x000D       lt div class  share  style    gt  x000D           lt h1 gt Test Page lt  h1 gt  x000D           lt p gt  Back button press please for control  lt  p gt  x000D       lt  div gt  x000D   lt  body gt  x000D   x000D   lt  html gt  x000D   x000D   x000D

User · Answer

In javascript  navigation type 2 means browser s back or forward button clicked and the browser is actually taking content from cache   if performance navigation type    2          Do your code here

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Correct answer is already there to answer the question  I want to mention new JavaScript API PerformanceNavigationTiming  it s replacing deprecated performance navigation   Following code will log in console  back forward  if user landed on your page using back or forward button  Take a look at compatibility table before using it in your project   var perfEntries   performance getEntriesByType  navigation    for  var i   0  i  lt  perfEntries length  i          console log perfEntries i  type

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Here s my take at it  The assumption is  when the URL changes but there has no click within the document detected  it s a browser back  yes  or forward   A users click is reset after 2 seconds to make this work on pages that load content via Ajax    function window         var anyClick  consoleLog  debug  delay    delay   function sec  func        return setTimeout func  sec   1000          debug   true    anyClick   false    consoleLog   function type  message        if  debug          return console type  message                  window document  click function         anyClick   true      consoleLog  info    clicked        return delay 2  function           consoleLog  info    reset click state          return anyClick   false                  return window addEventListener  popstate   function e        if  anyClick     true          consoleLog  info    Back clicked          return window dataLayer push           event   analyticsEvent           eventCategory   test           eventAction   test                           window  jQuery

User · Answer

A full-fledged component can be implemented only if you redefine the API  change the methods of object   history    I will share the class just written  Tested on Chrome and Mozilla Support only HTML5 and 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

User · Answer

I had been struggling with this requirement for quite a while and took some of the solutions above to implement it  However  I stumbled upon an observation and it seems to work across Chrome  Firefox and Safari browsers   Android and iPhone   On page load   window history pushState  page  1             window onpopstate   function event           event  object seems to contain value only when the back button is clicked      and if the pop state event fires due to clicks on a button      or a link it comes up as  undefined      if event          Code to handle back button or prevent from navigation       else         Continue user action through link or button         Let me know if this helps  If am missing something  I will be happy to understand

User · Answer

You can try popstate event handler  e g   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     Note  For the best results  you should load this code only on specific pages where you want to implement the logic to avoid any other unexpected issues   The popstate event is fired each time when the current history entry changes  user navigates to a new state   That happens when user clicks on browser s Back Forward buttons or when history back    history forward    history go   methods are programatically called   The event state is property of the event is equal to the history state object   For jQuery syntax  wrap it around  to add even listener after document is ready     function           Above code here     jQuery     See also  window onpopstate on page load    See also the examples on Single-Page Apps and HTML5 pushState page    lt script gt     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            lt  script gt    This should be compatible with Chrome 5   Firefox 4   IE 10   Safari 6   Opera 11 5  and similar

User · Answer

This will definitely work  For detecting back button click     window  on  popstate   function event     alert  pop

[javascript] How to Detect Browser Back Button event - Cross Browser

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