Scope.js

// 🌍 Global Scope
var globalVar = "I am global var";
let globalLet = "I am global let";
const globalConst = "I am global const";

console.log("🌍 Global Scope:");
console.log(globalVar);    // ✅ accessible
console.log(globalLet);    // ✅ accessible
console.log(globalConst);  // ✅ accessible

    function testFunctionScope() {
    // 🔧 Function Scope
    var functionVar = "I am function var";
    let functionLet = "I am function let";
    const functionConst = "I am function const";

    console.log("\n🔧 Function Scope:");
    console.log(functionVar);   // ✅ accessible
    console.log(functionLet);   // ✅ accessible
    console.log(functionConst); // ✅ accessible

        if (true) {
            // 🧱 Block Scope inside function
            directVariable = 'I am a direct variable (inside  function)';
            var blockVar = "I am block var (inside function)";
            let blockLet = "I am block let (inside function)";
            const blockConst = "I am block const (inside function)";

            console.log("\n🧱 Block Scope (Inside if block):");
            console.log(blockVar);    // ✅ accessible
            console.log(blockLet);    // ✅ accessible
            console.log(blockConst);  // ✅ accessible
        }

    console.log("\n🔍 After Block Inside Function:");  //__________let and const having block level scope________
    console.log(blockVar);      // ✅ var leaks out of block
    // console.log(blockLet);   // ❌ ReferenceError
    // console.log(blockConst); // ❌ ReferenceError
    }

testFunctionScope();

console.log("\n🚫 Outside Function:");              //_______Var / let / const having function scope______
console.log(directVariable);                        //_______direct variable having a Global scope______
// console.log(functionVar);   // ❌ ReferenceError
// console.log(functionLet);   // ❌ ReferenceError
// console.log(functionConst); // ❌ ReferenceError