revised the function of get-ordinal-number.js

Author: leerogerfn

practice-tdd/get-ordinal-number.js

@@ -1,7 +1,11 @@
 export function getOrdinalNumber(num) {
   const numToString = num.toString();
 
-  if (numToString === "11" || numToString === "12" || numToString === "13") {
+  if (
+    numToString.slice(-2) === "11" ||
+    numToString.slice(-2) === "12" ||
+    numToString.slice(-2) === "13"
+  ) {
     return `${num}th`;
   } else if (numToString.at(-1) === "1") {
     return `${num}st`;

practice-tdd/get-ordinal-number.test.js

@@ -44,7 +44,7 @@ test("should append 'th' for the remaining number", () => {
 });
 
 test("should append 'th' for numbers 111/112/113", () => {
-  expect(getOrdinalNumber(111)).toEqual("111st");
-  expect(getOrdinalNumber(112)).toEqual("112nd");
-  expect(getOrdinalNumber(113)).toEqual("113rd");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(112)).toEqual("112th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
 });