location.href load on the current page/previous url

i have the following jquery for onclick code :

function find(){
$.ajax({
    type: "post",
    url: link + 'register/data',
    data: {},
    success: function () {
        window.location.href= "mycontroller/myfunction"
    }
});

}

i want to make the url stays on mycontroller/myfunction everytime they click the button, i tried substring lastindexof but it keeps adding more url everytime i click the button, how do i make the button stays on that whenever i click it?
thanks in advance