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Build-in Methods

Learn & Practice Build-in Methods in JavaScript.

  • "" Manipulation (charAt, charCodeAt, concat, trim, slice) 🔒
  • "" Search (includes, indexOf, lastIndexOf, match) 🔒
  • "" Transformation (toLowerCase, toUpperCase, replace) 🔒
  • [] Manipulation (push, pop, shift, unshift) 🔒
  • [] Transformation (slice, splice) 🔒
  • [] Sorting (sort, reverse) 🔒
  • [] Combining (concat, join) 🔒
  • [] Flattening (flat, flatMap) 🔒
  • [] Search (find, findIndex, indexOf, lastIndexOf) 🔒
  • [] Testing (some, every) 🔒
  • [] Iteration (forEach, map, filter, reduce, reduceRight) 🔒
  • Object <-> Array (entries, fromEntries, keys, values) 🔒