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Code Snippets

A selection of helpful code snippets.

• // querySelector Alias
  const $ = function (target, origin = document) {
      return origin.querySelector(target)
  }
  const $$ = function (target, origin = document) {
      return Array.from(origin.querySelectorAll(target)
  }

• //randomise the order of an array
  function shuffle(array) {
      for (let i = array.length - 1; i > 0; i--) {
          let j = Math.floor(Math.random() * (i + 1));
          [array[i], array[j]] = [array[j], array[i]];
      }
  }}

• // Random pick functions
  function randomIntTween(min, max, inclusive = false) {
      let range;
      if (inclusive) {
          range = max - min + 1;
      } else {
          range = max - min;
      }
  const result = min + Math.floor(Math.random() * range);
  return result;
  }
  
  function bellCurveTween(min, max) {
      return Math.floor(
          (randomIntTween(min, max) + randomIntTween(min, max)) / 2,
      );
  }
  
  function pickFrom(array, bellCurve = false) {
      let index;
      if (bellCurve) {
          index = bellCurveTween(0, array.length);
      } else {
          index = randomIntTween(0, array.length);
      }
      return array[index];
  }