Arrow-Function-Expressions

Arrow Function Expressions

Source

Arrow function expressions are a compact alternative to traditional function expression.

For example

const materials = [
  'Hydrogen',
  'Helium',
  'Lithium',
  'Beryllium'
];

console.log(materials.map(material => material.length));
// expected output: Array [8, 6, 7, 9]

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