Javascript: Disable Back Button - idea #1

(function (global) { if(typeof (global) === "undefined") { throw new Error("window is undefined"); } var _hash = "!"; var noBackPlease = function () { global.location.href += "#"; // making sure we have the fruit available for juice (^__^) global.setTimeout(function () { global.location.href += "!"; }, 50); }; global.onhashchange = function () { if (global.location.hash !== _hash) { global.location.hash = _hash; } }; global.onload = function () { noBackPlease(); // disables backspace on page except on input fields and textarea.. document.body.onkeydown = function (e) { var elm = e.target.nodeName.toLowerCase(); if (e.which === 8 && (elm !== 'input' && elm !== 'textarea')) { e.preventDefault(); } // stopping event bubbling up the DOM tree.. e.stopPropagation(); }; } })(window);