I have strings like this:
(Feb 28-Mar 1)
(Mar 2-3)
I would like me to return an object as you can see below, someone to give some suggestion how can I do?
function rD(text){
let date = text.replace('(', '').replace(')', '').split(' ');
//const [start, end] = date[2].split("-").map(Number);
return date;
}
console.log(rD("(Feb 28-Mar 1)"))
console.log(rD("(Mar 2-3)"))Return:
[
{
month: 2,
day: 28
},
{
month: 3,
day: 1
}
]
[
{
month: 3,
day: 2
},
{
month: 3,
day: 3
}
]
I'd remove the parentheses first and then split by /[ -]/. This way you get an array in one of these two forms
["Feb", "28", "Mar", "1"]
or
["Mar", "2", "3"]
Now if the array has 4 elements the first and third are always the month and second and forth are the day. If the array has 3 elements, the first is a month for both, start and end, the second and third are the days.
For getting the number of the month you can have a simple lookup like
{ Jan:1, Feb:2, ... }
let months = { Jan: 1, Feb: 2, Mar: 3 /* you get the idea*/}
let spans = ["(Jan 28 - Feb 3)", "(Mar 1-3)"]
let parse = (span) => {
let parts = span.replace(/[()]/g, "").split(/[ -]/).filter(x => !!x);
switch (parts.length) {
case 4: return [{month: months[parts[0]], date: +parts[1]}, {month: months[parts[2]], date: +parts[3]}];
case 3: return [{month: months[parts[0]], date: +parts[1]}, {month: months[parts[0]], date: +parts[2]}];
default: return undefined;
}
}
console.log(parse(spans[0]));
console.log(parse(spans[1]))I'd suggest using a regex pattern to parse each span.
From this we can get the startMonth, startDay, endMonth, endDay. We can then create a getMonthNumber() function to turn the abbreviated month name (Jan, Feb, etc.) to a number.
function getMonthNumber(month) {
const lookup = { jan: 01, feb: 02, mar: 03, apr: 04, may: 05, jun: 06, jul: 07, aug: 08, sep: 09, oct: 10, nov: 11, dec: 12};
return lookup[(month + '').toLowerCase()]
}
function parseSpan(str) {
const pattern = /\(([a-z]{3})\s+(\d{1,2})\-([a-z]{3})?\s?(\d{1,2})\)/i
const [, startMonth, startDay, endMonth, endDay] = str.match(pattern);
return [
{ month: getMonthNumber(startMonth), day: +startDay },
{ month: getMonthNumber(endMonth || startMonth), day: +endDay }
];
}
let testInputs = [
'(Feb 28-Mar 1)',
'(Mar 2-3)',
'(Sep 28-Oct 31)',
'(Jan 3-17)'
]
testInputs.map(parseSpan).forEach(span => console.log(span)).as-console-wrapper { max-height: 100% !important; }You can try this
function rangeCalcFunc(range = null) {
if(range && range.length){
const [start, end] = range.substring(1, range.length-1).split("-");
console.log(start);console.log(end);
const [startMon, startDt] = start.split(" ");
const [endMon, endDt] = end.split(" ");
return [
{
month: calcMonthInNumber(startMon.trim()),
date: startDt
},
{
month: calcMonthInNumber(endMon.trim()),
date: endDt
}
]
}
}
function calcMonthInNumber(month) {
switch(month.toLowerCase()){
case 'jan': return '01'
case 'feb': return '02'
//add for other months
default: break;
}
}
console.log(rangeCalcFunc("(Jan 28-Feb 1)"));