使用单个函数格式化两个不同的日期

Question

格式1： 2014年5月12日
格式2： 2014年5月12日星期一

这是我的尝试

function formatDate(date) {
    var weekday = new Array(7);

    weekday[0] = "Sun";
    weekday[1] = "Mon";
    weekday[2] = "Tue";
    weekday[3] = "Wed";
    weekday[4] = "Thu";
    weekday[5] = "Fri";
    weekday[6] = "Sat";

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

    var month = (date.getMonth()) + 1;

    month = "0" + month;
    month = month.slice(-2);

    //var out = weekday[date.getDay()] + " " + monthNames[date.getMonth()] + " " + date.getDate() + " " + date.getFullYear();
    var out = +date.getDate() + " " + weekday[date.getDay()];

    return out;
}

Answer 1

请查看MomentJS，它提供了多种功能来轻松处理这类问题。

Answer 2

JavaScript new Date()函数在接受多种格式的日期时非常聪明。

我喜欢 10 ways to format time and date using JavaScript 和 Working with Dates

基本上，你有三种方法，你必须自己组合字符串：

getDate() // Returns the date
getMonth() // Returns the month
getFullYear() // Returns the year

示例

<script type="text/javascript">
    var d = new Date();
    var curr_date = d.getDate();
    var curr_month = d.getMonth() + 1; //Months are zero based
    var curr_year = d.getFullYear();
    document.write(curr_date + "-" + curr_month + "-" + curr_year);
</script>

via - Haim