A small example of extending the time formatting function of JS Date object_javascript skills

Date.prototype.format =function(format)
{
var o = {
“M " : this.getMonth() 1, //month
"d " : this.getDate() , //day
"h " : this.getHours(), //hour
"m " : this.getMinutes(), //minute
"s " : this.getSeconds(), / /second
"q " : Math.floor((this.getMonth() 3)/3), //quarter
"S" : this.getMilliseconds() //millisecond
};
if(/(y)/.test(format))
{ ));
}
for(var k in o)
{
if(new RegExp("(" k ")").test(format))
{
format = format.replace(RegExp.$1,RegExp.$1.length==1? o[k] :("00" o[k]).substr(("" o[k]).length));
}
}
return format;
};