JS: String.prototype.endsWith

By Xah Lee. Date: . Last updated: .

New in ES2015.

s.endsWith ( searchString )

s.endsWith ( searchString, endPosition )

Return true if s end with searchString. Else, returns false.

If endPosition is given, it is assumed to be the end of string. For example, "abcde".endsWith (str, 3) is the same as "abc".endsWith (str).

endPosition is negative, count from right.

const ss = "abcd";

console.log ( ss.endsWith("cd") ); // true
console.log ( ss.endsWith("cd", 4) ); // true
console.log ( ss.endsWith("a", 1) ); // true
console.log ( ss.endsWith("ab", 2) ); // true

console.log ( ss.endsWith("b") );  // false
console.log ( ss.endsWith("bc", 2) ); // false

Reference

ECMAScript 2015 §Text Processing#sec-string.prototype.endswith

JS String

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  2. Template String
  3. Char, Code Unit, Code Point
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  6. String to Number
  7. Encode URL, Escape String
  8. Format Number
  9. Source Code Encoding
  10. Allowed Characters in Identifier
  11. String Object
  12. String.prototype
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