javascript自定义日期函数

1.格式化日期(YYYY-MM-DD)

代码：

var DateFormat = function (date) {
    if (!(date instanceof Date)) {
        date = date.replace(/-/g, "/");
        date = new Date(date);
    }
    var month = date.getMonth() + 1;
    var year = date.getFullYear();
    var day = date.getDate();

    if (month < 10) {
        month = "0" + month;
    }
    if (day < 10) {
        day = "0" + day;
    }
    return year + "-" + month + "-" + day;
}

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