javascript - 完成原始 document.title 上的脚本吗？

Question

我遇到的问题是这个脚本在 Flash 标题上完成，我必须更改什么才能使该脚本以原始文档标题结束。希望您理解我想要实现的目标。

(function () {

var original = document.title;
var timeout;

window.flashTitle = function (newMsg, howManyTimes) {
    function step() {
        document.title = (document.title == original) ? newMsg : original;

        if (--howManyTimes > 0) {
            timeout = setTimeout(step, 1000);
        };
    };

    howManyTimes = parseInt(howManyTimes);

    if (isNaN(howManyTimes)) {
        howManyTimes = 5;
    };

    cancelFlashTitle(timeout);
    step();
};

window.cancelFlashTitle = function () {
    clearTimeout(timeout);
    document.title = original;
};

}());
flashTitle("New Notification");

Answer 1

您需要确保howManyTimes var是偶数，如果是奇数，它将以newMsg结束:

(function () {

    var original = document.title;
    var timeout;

    window.flashTitle = function (newMsg, howManyTimes) {
        if (isNaN(howManyTimes)) {
            howManyTimes = 5;
        };

        howManyTimes = (howManyTimes % 2 == 0) ? howManyTimes : howManyTimes + 1;

        function step() {
            document.title = (document.title == original) ? newMsg : original;

            if (--howManyTimes > 0) {
                timeout = setTimeout(step, 1000);
            };
        };

        howManyTimes = parseInt(howManyTimes);

        cancelFlashTitle(timeout);
        step();
    };

    window.cancelFlashTitle = function () {
        clearTimeout(timeout);
        document.title = original;
    };

}());
flashTitle("New Notification");

编辑 - 修复了小错误