CHANGE DEFAULT FORM BUTTON REDIRECT – THE SIMPLE WAY

spedit.js

function changeRedirect(options) {
    for (var i = 0, buttons = document.querySelectorAll(options.selector); i < buttons.length; i++) {
        var newOnClick = function(originalOnClick) {
            return function(){
                Nav.navigate = STSNavigate = function() {
                    window.location = options.redirectTo
                }
                originalOnClick()
            }
        }
        buttons[i].onclick = newOnClick(buttons[i].onclick)
    }
}
 
document.addEventListener("DOMContentLoaded", function(event) {
    changeRedirect({
        selector:   "input[value=Save]",
        redirectTo: "https://google.com"
    })
    changeRedirect({
        selector:   "input[value=Cancel]",
        redirectTo: "https://bing.com"
    })
})