How can i make it nicer?
var month = new Array();
month['01']='Jan';
month['02']='Feb';
month['03']='Mar';
etc. Itd be nice to do it like:
var months = new Array(['01','Jan'],['02','Feb'],['03','Mar']);
For example. anyway like that to simplify it?
For a more natural approach, try this little snippet. It works with Date objects and just as a regular function:
'use strict';
(function(d){
var mL = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
var mS = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'June', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec'];
d.prototype.getLongMonth = d.getLongMonth = function getLongMonth (inMonth) {
return gM.call(this, inMonth, mL);
}
d.prototype.getShortMonth = d.getShortMonth = function getShortMonth (inMonth) {
return gM.call(this, inMonth, mS);
}
function gM(inMonth, arr){
var m;
if(this instanceof d){
m = this.getMonth();
}
else if(typeof inMonth !== 'undefined') {
m = parseInt(inMonth,10) - 1; // Subtract 1 to start January at zero
}
return arr[m];
}
})(Date);
You can directly copy and paste this, then use it like this:
var today = new Date();
console.log(today.getLongMonth());
console.log(Date.getLongMonth(9)); // September
console.log(today.getShortMonth());
console.log(Date.getShortMonth('09')); // Sept
This technique will provide flexibility as to how you index and how you access it. When using the Date object it will work correctly, but if using it as a standalone function it considers the months in human readable format from 1-12.
this should do it ..
var months = {'01':'Jan', '02':'Feb'};
alert( months['01'] );
Here's a dynamic solution that does not require hard-coding an array of months:
const month = f=>Array.from(Array(12),(e,i)=>new Date(25e8*++i).toLocaleString('en-US',{month:f}));
Test Cases:
// Using Number Index:
month`long`[0]; // January
month`long`[1]; // February
month`long`[2]; // March
month`short`[0]; // Jan
month`short`[1]; // Feb
month`short`[2]; // Mar
month`narrow`[0]; // J
month`narrow`[1]; // F
month`narrow`[2]; // M
month`numeric`[0]; // 1
month`numeric`[1]; // 2
month`numeric`[2]; // 3
month`2-digit`[0]; // 01
month`2-digit`[1]; // 02
month`2-digit`[2]; // 03
// Using String Index:
let index_string = '01';
month`long`[index_string-1]; // January
month`short`[index_string-1]; // Jan
month`narrow`[index_string-1]; // J
month`numeric`[index_string-1]; // 1
month`2-digit`[index_string-1]; // 01
why not:
var month = [
'Jan',
'Feb',
// ...
'Dec'];
To get the month name from the number you'd do something like:
var monthNum = 2; // February
var monthShortName = month[monthNum-1];
var one = {'1': 'one'}; var month = {}; month[one] = "Jan";
Here is very simple approach to get month name :
<script>
function getMonth(month){
month = month-1;
var months = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
if(months[month] != null){
return months[month];
}else{
throw "Invalid Month No";
}
}
try{
monthName = getMonth(8);
alert("Month Is : " + monthName);
}catch(e){
console.log(e);
}
</script>
Don't use an Array unless you're using real numeric indexes. Try this:
var month = {
'01': 'Jan',
'02': 'Feb',
// ...
'12': 'Dec'
};
Personally, though, I would wrap this kind of logic in a function:
var monthNames = ['Jan', 'Feb', /* ... */ 'Dec'];
function getMonthName(n) {
return monthNames(n - 1);
}
alert(getMonthName(1)); // 'Jan'
That way, you never have to think about the underlying data structure, or worry about changing it later.
You can use nice library https://github.com/pret-a-porter/month-list
getMonthList('en', 'short') for short names ["Jan", "Feb", ...]getMonthList('en', '2-digit') for numeric strings ["01", "02", ...]Months in javascript for faster access O(1)
const months = { "01": "Jan", "02": "Feb", "03": "Mar", "04": "Apr", "05": "May", "06": "Jun", "07": "Jul", "08": "Aug", "09": "Sep", "10": "Oct",
"11": "Nov",
"12": "Dec", };
import java.util.*;
public class NumOfMonth
{
public static void main(String args[]) {
Scanner in = new Scanner (System.in);
String months[] = {"","Jan", "Feb", "March", "april" , "june", "july", "august", "sept", "oct", "nov","Dec`1"};
int m = 0;
System.out.format("enter the number of month:");
m = in.nextInt();
System.out.println(months[m]);
}
}
alert(month.length);