JS Practice — Built-in Objects

String.prototype.endsWith() — basic match

📖 Usage Example

const str = 'Hello, World!'
str.endsWith('!')        // → true
str.endsWith('World')    // → false
str.endsWith('World', 12) // → true

Use endsWith() to check if a string ends with a specific suffix, with an optional end position.

String.prototype.endsWith()

str.endsWith(searchString) returns true if the string ends with the given suffix.

Challenge: Implement endsWithPeriod(str) that returns true when str ends with '.'.

endsWithPeriod('Hello.') // → true
endsWithPeriod('Hello!')  // → false

💡 Hints (1)