Alphanumeric sorting using JavaScript

We have a mixed array that we need to sort by alphabet and then by digit −

const arr = ['Ab-1', 'Ab-11', 'Ab-12', 'ab-10', 'ab-100', 'ab-101', 'ab2', 'ab-3', 'ab-105'];

Example

The code for this will be −

const arr = ['Ab-1', 'Ab-11', 'Ab-12', 'ab-10', 'ab-100', 'ab-101', 'ab2', 'ab-3', 'ab-105'];
const alphaNumericSort = (arr = []) => {
   arr.sort((a, b) => {
      const aPart = a.split('-');
      const bPart = b.split('-');
      return aPart[0].toLowerCase().localeCompare(bPart[0].toLowerCase()) || aPart[1] - bPart[1];
   });
};
alphaNumericSort(arr);
console.log(arr);

Output

And the output in the console will be −

[
   'Ab-1', 'ab-2',
   'ab-3', 'ab-10',
   'Ab-11', 'Ab-12',
   'ab-100', 'ab-101',
   'ab-105'
]

AmitDiwan

Updated on: 24-Nov-2020

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