Redirect Another Page ?

Question

$(window).on("beforeunload", function () {

debugger;

var tid = getCookie();

console.log("TestId =" + tid);

if (tid != "") {

setTimeout(function () {

window.location = "DeleteRec.aspx";

}, 3000);

}

else {

console.log("Not Run");

}

})

 

This is my code not redirct other page . What's problem this code. Any help me.