将new Date() 格式化为 ’2018-10-11‘ 的字符串格式
function dateToString( date , format ){
if(!date) return "";
if (!Common.type.isDate(date)) return ""; //详见博客:常用类型判断
format = format ? format : "y-m-d";
switch(format){
case "y-m":
return date.getFullYear() + "-" + datePad( date.getMonth() + 1, 2 );
case "y-m-d":
return date.getFullYear() + "-" + datePad( date.getMonth() + 1, 2 ) + "-" + datePad( date.getDate(), 2 );
case "h-m-s":
return datePad( date.getHours(), 2 ) + ":" + datePad( date.getMinutes(), 2 ) + ":" + datePad( date.getSeconds(), 2);
case "y-m-d-h-m-s":
return date.getFullYear() + "-" + datePad( date.getMonth() + 1, 2 ) + "-" + datePad( date.getDate(), 2 ) + " " + datePad( date.getHours(), 2 ) + ":" + datePad( date.getMinutes(), 2 ) + ":" + datePad( date.getSeconds(), 2);
}
}
function datePad(num, n){
if( ( num + "" ).length >= n )
return num; //一位数
return arguments.callee( "0" + num, n ); //两位数
}
Common.type.isDate: function() {
for (var b = 0, a = arguments.length; b < a; b++) {
o = arguments[b];
if (!(System.type.isObject(o) && o.constructor && (o.constructor.toString().indexOf("Date") > -1 || o instanceof Date))) {
return false;
}
}
return true;
}
例:
var today = new Date();
dateToString(today); // '2017-10-11'
dateToString(today,'y-m'); //'2017-10'
dateToString(today,'y-m-d-h-m-s'); //'2017-10-11 16:42:59'