How to remove blank spaces from an array and print first 3 letters from string of the array

Question

I have an array like this:

       ['', 'Monday', '', '', 'Thursday', '', 'Saturday']
       OR,
       Monday,Thursday,saturday

I want output like;

       ['Monday', 'Thursday','Saturday']

AND,When i map this array I want to print only first 3 letters of the strings of the array like below;

       Mon,Thu,Sat

How to achive this????

Thanks in advance.....

KcH · Answer 1 · 2022-10-28T06:14:17.817

0

use filter to remove falsy values then,
using map and slice to get first 3 characters as below

const filtered = ["", "Monday", "", "", "Thursday", "", "Saturday"]
  .filter(Boolean)
  .map((day) => day.slice(0, 3));
console.log(filtered);

edited Oct 28 '22 at 06:14

answered Oct 28 '22 at 06:08

KcH

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Tim Biegeleisen · Answer 2 · 2022-10-28T06:10:59.370

0

Use filter:

var array = ['', 'Monday', '', '', 'Thursday', '', 'Saturday'];
var output = array.filter(x => x !== '')
                  .map(x => x.substring(0, 3));
console.log(output);

edited Oct 28 '22 at 06:10

answered Oct 28 '22 at 06:08

Tim Biegeleisen

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Hey Tim, They have asked for starting 3 letters – KcH Oct 28 '22 at 06:10
1

The OP changed the requirements. – Tim Biegeleisen Oct 28 '22 at 06:11
oh my bad ... looks confusing – KcH Oct 28 '22 at 06:11

score 0 · Accepted Answer · answered Oct 28 '22 at 06:10

0

Using filter(Boolean) will make it more shorter

let data = ['', 'Monday', '', '', 'Thursday', '', 'Saturday']
data = data.filter(Boolean).map(d => d.substring(0,3))
console.log(data)

answered Oct 28 '22 at 06:10

flyingfox

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Please vote to close obvious duplicates instead of answering them – adiga Oct 28 '22 at 06:17
@adiga yeah,will delete it later,since I have deleted 5 answers and reach the limit – flyingfox Oct 28 '22 at 06:21

How to remove blank spaces from an array and print first 3 letters from string of the array

3 Answers3