javascript pagination demo
var current_page = 1;
var records_per_page = 2;
var objJson = [
{ adName: "AdName 1"},
{ adName: "AdName 2"},
{ adName: "AdName 3"},
{ adName: "AdName 4"},
{ adName: "AdName 5"},
{ adName: "AdName 6"},
{ adName: "AdName 7"},
{ adName: "AdName 8"},
{ adName: "AdName 9"},
{ adName: "AdName 10"}
]; // Can be obtained from another source, such as your objJson variable
function prevPage()
{
if (current_page > 1) {
current_page--;
changePage(current_page);
}
}
function nextPage()
{
if (current_page < numPages()) {
current_page++;
changePage(current_page);
}
}
function changePage(page)
{
var btn_next = document.getElementById("btn_next");
var btn_prev = document.getElementById("btn_prev");
var listing_table = document.getElementById("listingTable");
var page_span = document.getElementById("page");
// Validate page
if (page < 1) page = 1;
if (page > numPages()) page = numPages();
listing_table.innerHTML = "";
for (var i = (page-1) * records_per_page; i < (page * records_per_page); i++) {
listing_table.innerHTML += objJson[i].adName + "<br>";
}
page_span.innerHTML = page;
if (page == 1) {
btn_prev.style.visibility = "hidden";
} else {
btn_prev.style.visibility = "visible";
}
if (page == numPages()) {
btn_next.style.visibility = "hidden";
} else {
btn_next.style.visibility = "visible";
}
}
function numPages()
{
return Math.ceil(objJson.length / records_per_page);
}
window.onload = function() {
changePage(1);
};