Checkbox still checked hitting the back button, but it has no "checked" attribute

There's a crazy trick to fix this problem. Add autocomplete='off' to your checkboxes. Sounds crazy, but it works!

I know this is an old question but someone might "Google" the same question and lands here, just how I did. In 2019 Chrome 71 still has this behaviour so it's something not going away anytime soon. In the meantime here is a script to easily adjust the checked state to the checked attribute.

<script>/* This script is to FIX some strange browser (Chrome included) behaviour.History back returns false checks on checkboxes.The checked HTML attribute is only a "DEFAULT VALUE" unfortunately */var filter_form = document.getElementById("filter_form");var inputs = filter_form.getElementsByTagName("input");for(var i = 0; i < inputs.length; i++) {    if(inputs[i].type == "checkbox") {      /* If default is checked, but state is not checked, check it*/      if (inputs[i].defaultChecked == true) {        if (inputs[i].checked != true) {          inputs[i].checked = true;        }      /* If defeault not checked, but state is checked, uncheck it */      } else {        if (inputs[i].checked == true) {          inputs[i].checked = false;        }      }    }  }</script>

Use Javascript to clean the form, probably quicker using a framework like jQuery.Then something like this...

$( document ).ready(function() {    $(':input').val(''); //This would clear all inputs.});

So when the document finishes loading it will clear all the inputs.