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CODE EXAMPLE FOR JAVASCRIPT

listen back button event listner

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
  }
}
Source by stackoverflow.com #
 
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Tagged: #listen #button #event #listner
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