Concatenation

let firstName = "Vignesh";
let lastName = "Varanasi";
let fullName = firstName + " " + lastName;
console.log(fullName); // Vignesh Varanasi

length

let str="Vignesh Varanasi";
console.log(str.length); // 16

String Methods

charAt

let charAtStr = "Vignesh Varanasi";
console.log(charAtStr.charAt(0)); // V
console.log(charAtStr.charAt(1)); // i

substring

let fullName = "Vignesh Varanasi";
console.log(fullName); // Vignesh Varanasi
console.log(fullName.substring(0)); // Vignesh Varanasi
console.log(fullName.substring(0, 7)); // Vignesh

slice

let sliceStr = "Vignesh Varanasi";
console.log(sliceStr.slice(1,6)); // ignes

toUpperCase

let upperStr = "vignesh varanasi";
console.log(upperStr.toUpperCase()); // VIGNESH VARANASI

toLowerCase

let lowerStr = "VIGNESH VARANASI";
console.log(lowerStr.toLowerCase()); // vignesh varanasi

split

let wish = "Good Morning All";
let wishSplit = wish.split(" ");
console.log(wishSplit); // ["Good", "Morning", "All"]

replace

let replaceStr = "Hello, Vignesh!";
console.log(replaceStr.replace("Vignesh", "Pavan")); // "Hello, Pavan!"

indexOf