Disable Back Button in Browser using jquery?

Question

I would like to Disable Back button when user click on logoff for this i delete only cookies of that user not session in my application. And want to disable Back button

Answer 1

Simple logic: move forward when click forward

---

function preventBack() {
    window.history.forward();
}
 window.onunload = function() {
    null;
};
setTimeout("preventBack()", 0);

Keep this js code in your page it works.