JavaScript Basics

JavaScript is used to read data, make decisions, update pages, and talk to APIs. Keep the basics clean and the advanced parts become easier.

Variables

const appName = "WebNotes";
let completedLessons = 3;

Use const by default. Use let only when the value must change.

Conditions

if (status === "PASS") {
  console.log("Test passed");
} else {
  console.log("Investigate failure");
}

Functions

function buildMessage(name, topic) {
  return `${name} is learning ${topic}`;
}

Arrays and Objects

const testCase = {
  id: "TC-101",
  title: "Login with valid user",
  priority: "High"
};

const statuses = ["PASS", "FAIL", "BLOCKED"];