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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body></body>
</html>
<script>
let userName = "Bro Code"
// 01234567 = 8
console.log(userName)
console.log(`length ${userName.length}`)
console.log(`charAt(2) : ${userName.charAt(2)}`)
console.log(`indexOf("o") : ${userName.indexOf("o")}`)
console.log(`trim(" ") : ${userName.trim(" ")}`)
console.log(`toUpperCase() : ${userName.toUpperCase()}`)
console.log(`toLowerCase() : ${userName.toLowerCase()}`)
console.log(`repeat(3) : ${userName.repeat(3)}`)
console.log(`startsWith(" ") : ${userName.startsWith(" ")}`)
console.log(`endsWith("e") : ${userName.endsWith("e")}`)
let phoneNumber = "123-456-7890"
phoneNumber = phoneNumber.replaceAll("-", "", "/")
console.log(phoneNumber)
phoneNumber = phoneNumber.padStart(15, "0")
console.log(phoneNumber)
phoneNumber = phoneNumber.padEnd(20, "0")
console.log(phoneNumber)
let result = userName.includes(" ")
if (result) {
console.log(`Your username can't include ' '`)
} else {
console.log(userName)
}
</script>