Natural Sort in JavaScript

We have an array that contains some numbers and some strings, we are required to sort the array such that the numbers get sorted and get placed before every string and then the string should be placed sorted alphabetically.

For example

Let’s say this is our array −

const arr = [1, 'fdf', 'afv', 6, 47, 7, 'svd', 'bdf', 9];

The output should look like this −

[1, 6, 7, 9, 47, 'afv', 'bdf', 'fdf', 'svd']

Therefore, let’s write the code for this −

const arr = [1, 'fdf', 'afv', 6, 47, 7, 'svd', 'bdf', 9];
const sorter = (a, b) => {
   if(typeof a === 'number' && typeof b === 'number'){
      return a - b;
   }else if(typeof a === 'number' && typeof b !== 'number'){
      return -1;
   }else if(typeof a !== 'number' && typeof b === 'number'){
      return 1;
   }else{
      return a > b ? 1 : -1;
   }
}
arr.sort(sorter);
console.log(arr);

The output in the console will be −

[
   1, 6, 7,
   9, 47, 'afv',
   'bdf', 'fdf', 'svd'
]

AmitDiwan

Updated on 09-Oct-2020 11:57:34

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