jshimazu
11/26/2015 - 12:53 PM

jsでブラウザバックで戻るときに警告

jsでブラウザバックで戻るときに警告

before_unload.js
content_copyfile_download
window.addEventListener("beforeunload", function (e) {
    var confirmationMessage = "beforeunload"

    e.returnValue = confirmationMessage;     // Gecko and Trident
    return confirmationMessage;              // Gecko and WebKit
});