JavaScript 获取当前月份日期

 计算遍历出当前月份的所有日期，常用于日历展示或者日期列表展示：

// 获取当前月份的所有日期

function getCurrentMonthDates() {
    var currentDate = new Date()
    var year = currentDate.getFullYear()
    var month = currentDate.getMonth()
    var numDays = new Date(year, month + 1, 0).getDate()
    var today = currentDate.getDate()

    var dates = []
    for (var day = 1; day <= numDays; day++) {
        var date = new Date(year, month, day)
        var formattedDate = this.formatToUpperCaseDate(date)
        dates.push({
            date: today === day ? 'Today' : formattedDate,
            isToday: today === day,
            isCheck: day === 1  // false
        })
    }

    return {
        dates: dates,
        today: today
    }
}

// 格式化日期
function formatToUpperCaseDate(date) {
    var day = date.getDate()
    var monthNames = [
        "Jan", "Feb", "Mar", "Apr", "May", "Jun",
        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
    ]
    var month = monthNames[date.getMonth()]

    return day + " " + month
}

console.log(getCurrentMonthDates())

运行方法得出的结果：