chrome浏览器关闭页面弹窗提示次修改

Question

希望在关闭页面或者刷新页面时,chrome浏览器有弹窗提示,可以自定义提示词

window.onbeforeunload = function (e) {
  e.returnValue = "aaaaaaaaaaaaaa";
};

但是修改不了提示词

Answer 1

    window.addEventListener("beforeunload", listenClose, false);

    function listenClose(e) {

        var confirmationMessage = '是否现在离开？';

        (e || window.event).returnValue = confirmationMessage;

        return confirmationMessage;

    }