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I have a series of pages named "page-1" "page-2" "page-3"... "page-99" etc. I am trying to create a navigation so that whenever I click the "next" button it goes to the next page, and if I click "previous" it will go to the previous page depending on what the current page number is.

I have the HTML:
<a href="#" id="next">next</a> <!--it will go to page-3-->
<a href="#" id="prev">previous</a> <!--it will go to page-1-->

and the jQuery code (from
// Check that a resource exists at url; if so, execute callback
function checkResource(url, callback){
    var check = new XMLHttpRequest();
    check.addEventListener("load", function(e){
        if (check.status===200) callback();

// Get next or previous path
function makePath(sign){
    // location.pathname gets/sets the browser's current page
    return location.pathname.replace(
        // Regular expression to extract page number
        function(match, base, num) {
            // Function to increment/decrement the page number
            return base + (parseInt(num)+sign);
function navigate(path){ location.pathname = path; }

var nextPath = makePath(1), prevPath = makePath(-1);

checkResource(nextPath, function(){
    // If resource exists at nextPath, add the click listener
        .addEventListener('click', navigate.bind(null, nextPath));
checkResource(prevPath, function(){
    // If resource exists at prevPath, add the click listener
        .addEventListener('click', navigate.bind(null, prevPath));

For some reason the code does not work in Chrome and it partially work in Mozilla. I am very new to jQuery and I am trying to figure out why it does not work when I implement it. Any ideas ?

Thank you

What I have tried:

I have tried to fix it but I am very new to jQuery and it's hard for me to understand the problem.
Updated 12-Jul-16 19:51pm

1 solution

try this

var pageNamePattern = 'page'; // define the pattern of the html page name (http://www....../HtmlPage1.html)
       var firstPage = 1, lastPage = 10; // initialise the starting and ending page

       $(function () {
           var next = GetNextPageNumber();
           var nexturl = pageNamePattern + next + '.html';
           var prev = GetPrevPageNumber();
           var prevurl = pageNamePattern + prev + '.html';
           //$('#next').click(function () { window.location =nexturl });
           //$('#prev').click(function () { window.location = prevurl });

           $('#next').attr('href', nexturl);
           $('#prev').attr('href', prevurl);


       function GetCurrentPageNumber() {
           var path = window.location.pathname;
           var page = path.split("/").pop();
           page = page.replace(pageNamePattern, '').replace('.html', '').replace('#', '');
           return parseInt(page);
       function GetNextPageNumber() {
           var current = GetCurrentPageNumber();
           if (current > lastPage) // if last page, then dont increment the counter, either stay in same page or navigate to very fist page.
               current = lastPage;
           return current;
       function GetPrevPageNumber() {
           var current = GetCurrentPageNumber();
           if (current < firstPage) // if last page, then dont increment the counter, either stay in same page or navigate to very fist page.
               current = firstPage;
           return current;
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