JS格式化日期方法

function getNowFormatDate(date) {
    var seperator1 = "-";
    var seperator2 = ":";
    var year = date.getFullYear();
    var month = numberFormat(date.getMonth() + 1);
    var strDate = numberFormat(date.getDate());
    var hours = numberFormat(date.getHours());
    var minutes = numberFormat(date.getMinutes());
    var seconds = numberFormat(date.getSeconds());
    var currentdate = year + seperator1 + month + seperator1 + strDate
            + " " + hours + seperator2 + minutes
            + seperator2 + seconds;
    return currentdate;
}
function numberFormat(number){
    return number > -1 && number < 10?"0"+number:number;
}