Properties

• 12.1 Use dot notation when accessing properties. eslint: dot-notation

  const luke = {
    jedi: true,
    age: 28,
  };
  // bad
  const isJedi = luke['jedi'];
  // good
  const isJedi = luke.jedi;

• 12.2 Use bracket notation [] when accessing properties with a variable.

  const luke = {
    jedi: true,
    age: 28,
  };
  function getProp(prop) {
    return luke[prop];
  }
  const isJedi = getProp('jedi');

• 12.3 Use exponentiation operator ** when calculating exponentiations. eslint: no-restricted-properties.

  // bad
  const binary = Math.pow(2, 10);
  // good
  const binary = 2 ** 10;