if (true) {// block - wrapping up multiple statements // Compound Statement var a = 10 console.log(a); } if (true) console.log("NOT in Block"); // Block scope means what all variables and functions we can access inside this block var a = 100 let b = 100 const c = 100 let d = 10 { //shadowing // var d = 10 //❌ let d = 10 // Hoisted in Global-Scope var a = 10 // Block-Scope : These are hoisted in separate memory space that is reserved for this Block. let b = 20 // this value of b is shadowing the value of global scope let b = 100 const c = 30 console.log(a); console.log(b); console.log(c); } console.log(a); console.log(b); console.log(c);