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Taufik Nurrohman
Taufik Nurrohman

Posted on

This Code Snippet Will Make You Think That `switch ... case` Statements Are Obsolete

#javascript

Before 

let b;

switch (a) {
  case '#':
    b = 'one';
    break;
  case '##':
    b = 'two';
    break;
  default:
    b = 'unknown';
}
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After 

let b = ({
    '#': 'one',
    '##': 'two'
})[a] ?? 'unknown';
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