如何获得2位数的年份w / Javascript？ [英] How to get 2 digit year w/ Javascript?

问题描述

我正在尝试找到一些JavaScript代码，将以以下格式写入当前日期：mmddyy

我发现的一切使用4位数字，我需要2位数

解决方案

这个问题的具体答案见下面两行：

  //拉出yearconsole.log的最后两位数（new Date（）。getFullYear（）。toString（） .substr（-2））;  

格式化全日期时间示例（MMddyy）： jsFiddle

JavaScript：

  //将日期格式化为MMddyyfunction的函数formatDate（d）{//获取月份var month = d.getMonth（）; // get the day var day = d.getDate（）; //获取年份var year = d.getFullYear（）; //拉出年份的最后两位数= year.toString（）。substr（-2）; //由于月份为0，索引月份=月+ 1; //将月份转换为字符串month = month +; // if month is 1-9 pad right with a 0 for two digits if（month.length == 1）{month =0+ month; } //将day转换为string day = day +; // if day is between 1-9 pad right with a 0 for two digits if（day.length == 1）{day =0+ day; } //返回字符串MMddyyreturn month + day + year;} var d = new Date（）; console.log（formatDate（d））;  

/ div>

I am trying to find some javascript code that will write the current date in this format: mmddyy

Everything I have found uses 4 digit years and I need 2 digit.

解决方案

The specific answer to this question is found in these two lines below:

//pull the last two digits of the year
console.log(new Date().getFullYear().toString().substr(-2));

Formatting Full Date Time Example (MMddyy): jsFiddle

JavaScript:

//A function for formatting a date to MMddyy
function formatDate(d)
{
    //get the month
    var month = d.getMonth();
    //get the day
    var day = d.getDate();
    //get the year
    var year = d.getFullYear();
    
    //pull the last two digits of the year
    year = year.toString().substr(-2);
    
    //increment month by 1 since it is 0 indexed
    month = month + 1;
    //converts month to a string
    month = month + "";

    //if month is 1-9 pad right with a 0 for two digits
    if (month.length == 1)
    {
        month = "0" + month;
    }

    //convert day to string
    day = day + "";

    //if day is between 1-9 pad right with a 0 for two digits
    if (day.length == 1)
    {
        day = "0" + day;
    }

    //return the string "MMddyy"
    return month + day + year;
}

var d = new Date();
console.log(formatDate(d));

这篇关于如何获得2位数的年份w / Javascript？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！