javascript获取当前时间CurentTime

function CurentTime(){ 
    var now = new Date();
    
    var year = now.getFullYear();       //年
    var month = now.getMonth() + 1;     //月
    var day = now.getDate();            //日
    
    var hh = now.getHours();            //时
    var mm = now.getMinutes();          //分
    var ss = now.getSeconds();          //秒
    
    var clock = year + "-";
    
    if(month < 10)
        clock += "0";
    
    clock += month + "-";
    
    if(day < 10)
        clock += "0";
        
    clock += day + " ";
    
    if(hh < 10)
        clock += "0";
        
    clock += hh + ":";
    if (mm < 10) 
        clock += ‘0‘; 
 
    clock += mm + ":"; 
 
    if(ss < 10)
        clock += "0";
 
    clock +=ss;
    return(clock); 
}