js获取当前时间字符串 yyyy-MM-dd HH:mm:ss

/**
 * 获取当前时间字符串
 * @returns {string}
 * @constructor
 */
function GetCurrentTimeStr() {
    var currentDate = new Date();
    var year = currentDate.getFullYear().toString();
    var month = (currentDate.getMonth() + 1).toString();
    if (month.length === 1){
        month = "0" + month;
    }
    var date = currentDate.getDate().toString();
    if (date.length === 1){
        date = "0" + date;
    }
    var hour = currentDate.getHours().toString();
    if (hour.length === 1){
        hour = "0" + hour;
    }
    var minute = currentDate.getMinutes().toString();
    if (minute.length === 1){
        minute = "0" + minute;
    }
    var second = currentDate.getSeconds().toString();
    if (second.length === 1){
        second = "0" + second;
    }

    return year+"-"+month+"-"+date+" " + hour+":"+minute+":"+second;
}