slice strings of an array in javascript

Question

i am getting below array.

Array [
  "מאי 2017",
  "יוני 2017",
  "ינואר 2018",
  "פברואר 2018",
  "מרץ 2018",
  "מאי 2018",
  "יוני 2018",
  "נובמבר 2019",
  "אוגוסט 2020",
  "נובמבר 2020",
  "דצמבר 2020",
  "ינואר 2021",
]

and i have an english month array.

const englishMonthArray = [
    "",
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July",
    "August",
    "September",
    "October",
    "November",
    "December",
  ]

how can i match only months of above array with English months?Thanks

I may not understand the question but I don't see any English months here. — nlta
– nlta, Commented Nov 23, 2021 at 6:44
now you can see there is an english month array.please give the solution. — Ashish good luck chuck
– Ashish good luck chuck, Commented Nov 23, 2021 at 6:48
Are you asking how to produce a new array that replaces the Hebrew month with the English equivalent? So "מאי 2017" would become "2017 May", for example? — Andy
– Andy, Commented Nov 23, 2021 at 7:19

Andy · Accepted Answer · 2021-11-23 07:47:31Z

Create a dictionary object that maps the Hebrew month (key) to the English equivalent (value).
map over the array. split the string on the space, get the English month from the dictionary, and then return a new string.

const arr=["מאי 2017","יוני 2017","ינואר 2018","פברואר 2018","מרץ 2018","מאי 2018","יוני 2018","נובמבר 2019","אוגוסט 2020","נובמבר 2020","דצמבר 2020","ינואר 2021"];

const dict = {
  ינואר: 'January',
  פברואר: 'February',
  מרץ: 'March',
  אַפּרִיל: 'April', 
  מאי: 'May',
  יוני: 'June',
  יולי: 'July',
  אוגוסט: 'August',
  יולי: 'September',
  יולי: 'October',
  נובמבר: 'November',
  דצמבר: 'December'
};

const out = arr.map(el => {

  // This was interesting. For an English string
  // this would be destructured like [year, month].
  // I'm assuming that because there's Hebrew in the string
  // JS/the browser reads it differently (right to left).
  const [ month, year ] = el.split(' ');
  const enMonth = dict[month];
  return `${year} ${enMonth}`;
});

console.log(out);

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