JS将Date转成String(yyyy-MM--dd HH:mm:ss)

function dateToString(date){
    var year = date.getFullYear();
    var month =(date.getMonth() + 1).toString();
    var day = (date.getDate()).toString();
    if (month.length == 1) {
        month = "0" + month;
    }
    if (day.length == 1) {
        day = "0" + day;
    }
    var hours = date.getHours().toString();
    if(hours.length == 1){
        hours = "0" + hours;
    }
    var mintus = date.getMinutes().toString();
    if(mintus.length == 1){
        mintus = "0" + mintus;
    }
    var second = date.getSeconds().toString();
    if(second.length == 1){
        second = "0" + second;
    }
    var dateTime = year + "-" + month + "-" + day + " " + hours + ":" +  mintus + ":" + second;
    return dateTime;
}