beforeunload is for javascript window object , not for jquery $window object. window.addEventListener('beforeunload', function (e) { // the ... ... <看更多>

Safari onbeforeunload bug. GitHub Gist: instantly share code, notes, and snippets. ... <看更多>

window.onbeforeunload = function () { return "你還沒有完成你的文章，就這樣離開了嗎 ... //Gecko + IE return confirmationMessage; //Webkit, Safari, Chrome }); ... ... <看更多>