如何连续 20 个月每月显示一条新消息

Posted

技术标签:

【中文标题】如何连续 20 个月每月显示一条新消息【英文标题】：How to display a new message each month for 20 consecutive months 【发布时间】：2020-05-15 10:13:52 【问题描述】：

我希望有人可以帮助我解决这个问题。我正在编写一个 javascript 来连续 20 个月每月显示 20 个问候中的一个，然后再开始问候。下面是 GreetingDetails 数组：

    var GreetingDetails = [
    // index0
        Greeting: "Foreign Greeting 0",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation0.mp3",
        CommerceLink: link
    , // index0
    // index1
        Greeting: "Foreign Greeting 1",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation1.mp3",
        CommerceLink: link
    , // index1
    // index2
        Greeting: "Foreign Greeting 2",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation2.mp3",
        CommerceLink: link
    , // index2
    // index3
        Greeting: "Foreign Greeting 3",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation3.mp3",
        CommerceLink: link
    , // index3
    // index4
        Greeting: "Foreign Greeting 4",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation4.mp3",
        CommerceLink: link
    , // index4
    // index5
        Greeting: "Foreign Greeting 5",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation5.mp3",
        CommerceLink: link
    , // index5
    // index6
        Greeting: "Foreign Greeting 6",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation6.mp3",
        CommerceLink: link
    , // index6
    // index7
        Greeting: "Foreign Greeting 7",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation7.mp3",
        CommerceLink: link
    , // index7
    // index8
        Greeting: "Foreign Greeting 8",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation8.mp3",
        CommerceLink: link
    , // index8
    // index9
        Greeting: "Foreign Greeting 9",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation9.mp3",
        CommerceLink: link
    , // index9
    // index10
        Greeting: "Foreign Greeting 10",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation10.mp3",
        CommerceLink: link
    , // index10
    // index11
        Greeting: "Foreign Greeting 11",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation11.mp3",
        CommerceLink: link
    , // index11
    // index12
        Greeting: "Foreign Greeting 12",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation12.mp3",
        CommerceLink: link
    , // index12
    // index13
        Greeting: "Foreign Greeting 13",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation13.mp3",
        CommerceLink: link
    , // index13
    // index14
        Greeting: "Foreign Greeting 14",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation14.mp3",
        CommerceLink: link
    , // index14
    // index15
        Greeting: "Foreign Greeting 15",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation15.mp3",
        CommerceLink: link
    , // index15
    // index16
        Greeting: "Foreign Greeting 16",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation16.mp3",
        CommerceLink: link
    , // index16
    // index17
        Greeting: "Foreign Greeting 17",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation17.mp3",
        CommerceLink: link
    , // index17
    // index18
        Greeting: "Foreign Greeting 18",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation18.mp3",
        CommerceLink: link
    , // index18
    // index19
        Greeting: "Foreign Greeting 19",
        Language: "Foreign Language",
        Translation: "English Translation",
        AudioPath: "/Content/Greetings/Pronunciation19.mp3",
        CommerceLink: link
     // index19
];

我尝试了几种不同的方法，测试获取每个问候语，但继续遇到仅获取 12. 12 的问题，因为一年中有 12 个月，我正在检查月份以进行比较环形。我想让这个尽可能动态，所以没有人必须再次触摸。这是我进行日期比较最成功的尝试：

var m = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September','October', 'November', 'December'];

var y = [];
var d = new Date();
//var test = new Date(2020, 1, 1);

// This for loop adds the years to the y-array
for (var i = 0; i < addYears; i++) 
    y.push(startYear++);


//alert(m.length);
//alert(y.length);
for (var i = 0; i < y.length; i++) 
    if (d.getFullYear() === y[i]) 
        for (var j = 0; j < GreetingDetails.length; j++) 
            if (m[d.getMonth()] === m[j]) 
                GreetingBuilder = GreetingDetails[j];
            
        
    


var GreetingBuilder;
GreetingElements = 
    topSection: function () 
        var holder = document.createElement("section");
        holder.id = "required-greeting";
        return holder;
    ,
    accessabilityP: function () 
        var holder = document.createElement("p");
        holder.classList.add("visuallyhidden");
        holder.innerText = "The following is a greeting given in one of 20 foreign languages.";
        return holder;
    ,
    greetingContainer: function () 
        var holder = document.createElement("dl");
        holder.id = "language-greeting";
        return holder;
    ,
    greetingDT: function () 
        var holder = document.createElement("dt");
        holder.classList.add("greeting");
        return holder;
    ,
    greetingLink: function () 
        var holder = document.createElement("a")
        holder.href = GreetingBuilder.CommerceLink;
        holder.classList.add("language-link");
        holder.text = GreetingBuilder.Greeting;
        return holder;
    ,
    audioContainer: function () 
        var holder = document.createElement("dd");
        holder.classList.add("speaker");
        return holder;
    ,
    audioPlayer: function () 
        var holder = document.createElement("audio");
        holder.id = GreetingBuilder.Language.toLowerCase().replace(" ", "-");
        holder.src = GreetingBuilder.AudioPath;
        holder.preload = "auto";
        return holder;
    ,
    audioButton: function () 
        var holder = document.createElement("button");
        holder.classList.add("pronunciation");
        holder.onclick = function () 
            document.getElementById(GreetingElements.audioPlayer().id).play();
        ;
        holder.innerText = "Listen to pronunciation";
        return holder;
    ,
    languageNameDD: function () 
        var holder = document.createElement("dd");
        holder.classList.add("language");
        holder.innerText = "(" + GreetingBuilder.Language + ")";
        return holder;
    ,
    languageTranslationDD: function () 
        var holder = document.createElement("dd");
        holder.classList.add("translation");
        holder.innerText = '"' + GreetingBuilder.Translation + '"';
        return holder;
    ,
    getFullGreetingSection: function () 
        var sectionInstance = this.topSection();
        var greetingDTInstance = this.greetingDT();
        var greetingContainerInstance = this.greetingContainer();
        var audioContainerInstance = this.audioContainer();


        greetingDTInstance.appendChild(this.greetingLink());
        greetingContainerInstance.appendChild(greetingDTInstance);

        audioContainerInstance.appendChild(this.audioPlayer());
        audioContainerInstance.appendChild(this.audioButton());

        greetingContainerInstance.appendChild(audioContainerInstance);
        greetingContainerInstance.appendChild(this.languageNameDD());
        greetingContainerInstance.appendChild(this.languageTranslationDD());

        sectionInstance.appendChild(this.accessabilityP());
        sectionInstance.appendChild(greetingContainerInstance);


        return sectionInstance;
    


document.getElementsByClassName("back-to-top")[0].insertAdjacentElement('afterend', GreetingElements.getFullGreetingSection());

如果您发现我做错了什么，请告诉我。我确信有更好的方法来解决这个问题，所以任何帮助都将不胜感激。

【问题讨论】：

看来(year * 12 + month) % 20 是获取索引所需的全部内容。 【参考方案1】：

指定一个过去的日期，您可以从该日期开始计算月份。然后，取自那时以来经过的几个月，并根据您的问候数组的长度对其进行修改。

尝试调整“pastDate”来模拟时间的流逝，得到不同的问候。

var greetings = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19].map (x=> "Greeting #" + x);

var currentDate = new Date();
var pastDate = new Date("2018-10-01"); // pick arbitrary point in past as the "first" month

var differenceInYears = currentDate.getYear() - pastDate.getYear(); // 20 years ago

var index = differenceInYears * 12 + currentDate.getMonth() - pastDate.getMonth(); // how many months ago we "started" counting

console.log(greetings[index%greetings.length]);

【讨论】：

【参考方案2】： 

var basedate = new Date(2020, 00);



function monthDiff(dateFrom, dateTo) 
  return dateTo.getMonth() - dateFrom.getMonth() +
    (12 * (dateTo.getFullYear() - dateFrom.getFullYear()))


function showmessage() 

  var curdate = new Date($('#curdate').val());
  var diff = monthDiff(basedate, curdate);
  
  
  while(diff > 19)
   diff = diff - 19;
  

  $('#output').append('<div>Greeting: ' + GreetingDetails[diff].Greeting + '</div>');


var link = '';
var GreetingDetails = [ // index0
    Greeting: "Foreign Greeting 0",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation0.mp3",
    CommerceLink: link
  , // index0
   // index1
    Greeting: "Foreign Greeting 1",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation1.mp3",
    CommerceLink: link
  , // index1
   // index2
    Greeting: "Foreign Greeting 2",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation2.mp3",
    CommerceLink: link
  , // index2
   // index3
    Greeting: "Foreign Greeting 3",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation3.mp3",
    CommerceLink: link
  , // index3
   // index4
    Greeting: "Foreign Greeting 4",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation4.mp3",
    CommerceLink: link
  , // index4
   // index5
    Greeting: "Foreign Greeting 5",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation5.mp3",
    CommerceLink: link
  , // index5
   // index6
    Greeting: "Foreign Greeting 6",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation6.mp3",
    CommerceLink: link
  , // index6
   // index7
    Greeting: "Foreign Greeting 7",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation7.mp3",
    CommerceLink: link
  , // index7
   // index8
    Greeting: "Foreign Greeting 8",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation8.mp3",
    CommerceLink: link
  , // index8
   // index9
    Greeting: "Foreign Greeting 9",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation9.mp3",
    CommerceLink: link
  , // index9
   // index10
    Greeting: "Foreign Greeting 10",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation10.mp3",
    CommerceLink: link
  , // index10
   // index11
    Greeting: "Foreign Greeting 11",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation11.mp3",
    CommerceLink: link
  , // index11
   // index12
    Greeting: "Foreign Greeting 12",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation12.mp3",
    CommerceLink: link
  , // index12
   // index13
    Greeting: "Foreign Greeting 13",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation13.mp3",
    CommerceLink: link
  , // index13
   // index14
    Greeting: "Foreign Greeting 14",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation14.mp3",
    CommerceLink: link
  , // index14
   // index15
    Greeting: "Foreign Greeting 15",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation15.mp3",
    CommerceLink: link
  , // index15
   // index16
    Greeting: "Foreign Greeting 16",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation16.mp3",
    CommerceLink: link
  , // index16
   // index17
    Greeting: "Foreign Greeting 17",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation17.mp3",
    CommerceLink: link
  , // index17
   // index18
    Greeting: "Foreign Greeting 18",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation18.mp3",
    CommerceLink: link
  , // index18
   // index19
    Greeting: "Foreign Greeting 19",
    Language: "Foreign Language",
    Translation: "English Translation",
    AudioPath: "/Content/Greetings/Pronunciation19.mp3",
    CommerceLink: link
   // index19
];
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type='date' id="curdate" />
<button type="button" onclick='showmessage()'>Show</button>

<div id="output">
</div>

您需要一个基准日期来确定月份是 0。 然后你需要今天月份和基准月份之间的月差。 如果 diff 大于 20，则减去 20。我使用了一个 while 循环来不断减去 20，直到差异不再大于 20。 使用数字作为问候数组的索引GreetingDetails[diff]。

这是一个基于您的问候的示例（广告工作）代码。您选择一个日期（未来的当前日期）。

【讨论】：

【参考方案3】：

只有 12 个月，所以只有 12 个唯一值可以使用但需要 20 个？使用年份！

2020 = 0
2021 = 1

所以你的第 13 个月是 2021 年 1 月，或者 12+1 等等。

用当年减去 2020 年。将其添加到当月。将值包装在 0 到 19 之间。

【讨论】：

【参考方案4】：

首先让我感谢所有回复的人。你的洞察力帮助我弄清楚我做错了什么。

我在 Nawed Khan 和 Ferenc 的回复中找到了答案。我认为需要几年和几个月的数学运算，但想不出要使用的公式。我在 Khan 的 monthDiff() 方法中使用了这个公式，因为我更喜欢它而不是把公式分成两部分。

var diff = todayDate.getMonth() - startDate.getMonth() + (12 * (todayDate.getFullYear() - startDate.getFullYear()));

一旦完成，就像他在回答中所做的那样，我将差异分配为 GreetingDetails 索引... GreetingDetails[diff] 和中提琴，神奇的事情发生了。这在一段时间内很有用……直到我过了 20 年，然后我开始收到错误的问候。问题出在 Khan 响应的 while 循环中。所以我把它改成减去 GreetingDetails.length（长度为 20），每次都得到正确的问候语。

while (diff >= GreetingDetails.length) 
    diff -= GreetingDetails.length;

如果 GreetingDetails[] 中的问候语数量发生变化，这也会有所帮助。我需要它尽可能动态，所以这应该是实现它的最佳方式。这样一来，只需要更改问候语的详细信息即可。

虽然 Khan 和 Ferenc 在公式中略有偏差，但我正在投票赞成他们以给予他们信任，因为我使用他们的回复来制定解决我的问题的方法。

完整的JS如下：

    var todayDate = new Date();
    var startDate = new Date(2020, 0)
    var diff = todayDate.getMonth() - startDate.getMonth() + (12 * (todayDate.getFullYear() - startDate.getFullYear()));
    var link = "url";
    var GreetingBuilder;
    var GreetingDetails = [
        // index0
            Greeting: "Foreign Greeting 0",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation0.mp3",
            CommerceLink: link
        , // index0
        // index1
            Greeting: "Foreign Greeting 1",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation1.mp3",
            CommerceLink: link
        , // index1
        // index2
            Greeting: "Foreign Greeting 2",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation2.mp3",
            CommerceLink: link
        , // index2
        // index3
            Greeting: "Foreign Greeting 3",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation3.mp3",
            CommerceLink: link
        , // index3
        // index4
            Greeting: "Foreign Greeting 4",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation4.mp3",
            CommerceLink: link
        , // index4
        // index5
            Greeting: "Foreign Greeting 5",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation5.mp3",
            CommerceLink: link
        , // index5
        // index6
            Greeting: "Foreign Greeting 6",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation6.mp3",
            CommerceLink: link
        , // index6
        // index7
            Greeting: "Foreign Greeting 7",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation7.mp3",
            CommerceLink: link
        , // index7
        // index8
            Greeting: "Foreign Greeting 8",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation8.mp3",
            CommerceLink: link
        , // index8
        // index9
            Greeting: "Foreign Greeting 9",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation9.mp3",
            CommerceLink: link
        , // index9
        // index10
            Greeting: "Foreign Greeting 10",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation10.mp3",
            CommerceLink: link
        , // index10
        // index11
            Greeting: "Foreign Greeting 11",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation11.mp3",
            CommerceLink: link
        , // index11
        // index12
            Greeting: "Foreign Greeting 12",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation12.mp3",
            CommerceLink: link
        , // index12
        // index13
            Greeting: "Foreign Greeting 13",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation13.mp3",
            CommerceLink: link
        , // index13
        // index14
            Greeting: "Foreign Greeting 14",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation14.mp3",
            CommerceLink: link
        , // index14
        // index15
            Greeting: "Foreign Greeting 15",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation15.mp3",
            CommerceLink: link
        , // index15
        // index16
            Greeting: "Foreign Greeting 16",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation16.mp3",
            CommerceLink: link
        , // index16
        // index17
            Greeting: "Foreign Greeting 17",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation17.mp3",
            CommerceLink: link
        , // index17
        // index18
            Greeting: "Foreign Greeting 18",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation18.mp3",
            CommerceLink: link
        , // index18
        // index19
            Greeting: "Foreign Greeting 19",
            Language: "Foreign Language",
            Translation: "English Translation",
            AudioPath: "/Content/Greetings/Pronunciation19.mp3",
            CommerceLink: link
         // index19
    ];

    while (diff >= GreetingDetails.length) 
        diff -= GreetingDetails.length;
    

    GreetingElements = 
        topSection: function () 
            var holder = document.createElement("section");
            holder.id = "required-greeting";
            return holder;
        ,
        accessabilityP: function () 
            var holder = document.createElement("p");
            holder.classList.add("visuallyhidden");
            holder.innerText = "The following is a greeting given in one of 20 foreign languages.";
            return holder;
        ,
        greetingContainer: function () 
            var holder = document.createElement("dl");
            holder.id = "language-greeting";
            return holder;
        ,
        greetingDT: function () 
            var holder = document.createElement("dt");
            holder.classList.add("greeting");
            return holder;
        ,
        greetingLink: function () 
            var holder = document.createElement("a")
            holder.href = GreetingBuilder.CommerceLink;
            holder.classList.add("language-link");
            holder.text = GreetingBuilder.Greeting;
            return holder;
        ,
        audioContainer: function () 
            var holder = document.createElement("dd");
            holder.classList.add("speaker");
            return holder;
        ,
        audioPlayer: function () 
            var holder = document.createElement("audio");
            holder.id = GreetingBuilder.Language.toLowerCase().replace(" ", "-");
            holder.src = GreetingBuilder.AudioPath;
            holder.preload = "auto";
            return holder;
        ,
        audioButton: function () 
            var holder = document.createElement("button");
            holder.classList.add("pronunciation");
            holder.onclick = function () 
                document.getElementById(GreetingElements.audioPlayer().id).play();
            ;
            holder.innerText = "Listen to pronunciation";
            return holder;
        ,
        languageNameDD: function () 
            var holder = document.createElement("dd");
            holder.classList.add("language");
            holder.innerText = "(" + GreetingBuilder.Language + ")";
            return holder;
        ,
        languageTranslationDD: function () 
            var holder = document.createElement("dd");
            holder.classList.add("translation");
            holder.innerText = '"' + GreetingBuilder.Translation + '"';
            return holder;
        ,
        getFullGreetingSection: function () 
            var sectionInstance = this.topSection();
            var greetingDTInstance = this.greetingDT();
            var greetingContainerInstance = this.greetingContainer();
            var audioContainerInstance = this.audioContainer();


            greetingDTInstance.appendChild(this.greetingLink());
            greetingContainerInstance.appendChild(greetingDTInstance);

            audioContainerInstance.appendChild(this.audioPlayer());
            audioContainerInstance.appendChild(this.audioButton());

            greetingContainerInstance.appendChild(audioContainerInstance);
            greetingContainerInstance.appendChild(this.languageNameDD());
            greetingContainerInstance.appendChild(this.languageTranslationDD());

            sectionInstance.appendChild(this.accessabilityP());
            sectionInstance.appendChild(greetingContainerInstance);


            return sectionInstance;
        
    

    GreetingBuilder = GreetingDetails[diff];

    document.getElementsByClassName("back-to-top")[0].insertAdjacentElement('afterend', GreetingElements.getFullGreetingSection());

我希望这对将来的某人有所帮助！

【讨论】：

以上是关于如何连续 20 个月每月显示一条新消息的主要内容，如果未能解决你的问题，请参考以下文章

访问：下拉菜单在连续子表单的第一条记录中不显示值

通过连续形式访问循环

在后台连续运行服务

在 SQL Server 中查找给定 12 个月内 6 个月的最高连续期间

在nodejs socket.io中显示连续连接消息

如何检查表列中的三个日期是不是连续月份