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JavaScript Academy · Lesson

Array CRUD, Iteration; Object Basics & Access

Array CRUD and iteration; object literals and property access with dot/bracket and optional chaining.

Intro

Goal: Handle arrays and objects with simple, safe patterns.

  • Array CRUD
  • Iterate values
  • Object access
Array CRUD, Iteration; Object Basics & Access — illustration 1

Array CRUD basics

Use push/unshift to add, pop/shift to remove. Keep prints short for mobile.

// Make an array
const colors = ["red", "green"];

// Add to end
colors.push("blue");

// Add to start
colors.unshift("pink");

// Remove from end
const last = colors.pop();

// Remove from start
const first = colors.shift();

console.log("Colors now:", colors);
console.log("Removed:", first, last);
Array CRUD, Iteration; Object Basics & Access — illustration 2

All lessons in this course

  1. Array CRUD, Iteration; Object Basics & Access
  2. Cloning & Merging — spread and Object.assign
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