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get javascript Code Snippet in 2022

objectregexpintermediate

Last Updated: 28 December 2022

Retrieves a set of properties indicated by the given selectors from an object.

  • Use Array.prototype.map() for each selector, String.prototype.replace() to replace square brackets with dots.
  • Use String.prototype.split('.') to split each selector.
  • Use Array.prototype.filter() to remove empty values and Array.prototype.reduce() to get the value indicated by each selector.
const get = (from, ...selectors) => [...selectors].map(s => s .replace(/\[([^\[\]]*)\]/g, '.$1.') .split('.') .filter(t => t !== '') .reduce((prev, cur) => prev && prev[cur], from) );
const obj = { selector: { to: { val: 'val to select' } }, target: [1, 2, { a: 'test' }], }; get(obj, 'selector.to.val', 'target[0]', 'target[2].a'); // ['val to select', 1, 'test']

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