--- id: acda2fb1324d9b0fa741e6b5 title: 確認結尾 challengeType: 5 forumTopicId: 16006 dashedName: confirm-the-ending --- # --description-- 檢查字符串(第一個參數 `str`)是否以給定的目標字符串(第二個參數 `target`)結束。 這個挑戰 *可以* 用 ES2015 引入的 `.endsWith()` 方法來解決。但在這個挑戰中,請使用 JavaScript 的字符串子串方法。 # --hints-- `confirmEnding("Bastian", "n")` 應返回 `true`。 ```js assert(confirmEnding('Bastian', 'n') === true); ``` `confirmEnding("Congratulation", "on")` 應返回 `true`。 ```js assert(confirmEnding('Congratulation', 'on') === true); ``` `confirmEnding("Connor", "n")` 應返回 `false`。 ```js assert(confirmEnding('Connor', 'n') === false); ``` `confirmEnding("Walking on water and developing software from a specification are easy if both are frozen", "specification")` 應返回 `false`。 ```js assert( confirmEnding( 'Walking on water and developing software from a specification are easy if both are frozen', 'specification' ) === false ); ``` `confirmEnding("He has to give me a new name", "name")` 應返回 `true`。 ```js assert(confirmEnding('He has to give me a new name', 'name') === true); ``` `confirmEnding("Open sesame", "same")` 應返回 `true`。 ```js assert(confirmEnding('Open sesame', 'same') === true); ``` `confirmEnding("Open sesame", "sage")` 應返回 `false`。 ```js assert(confirmEnding('Open sesame', 'sage') === false); ``` `confirmEnding("Open sesame", "game")` 應返回 `false`。 ```js assert(confirmEnding('Open sesame', 'game') === false); ``` `confirmEnding("If you want to save our world, you must hurry. We dont know how much longer we can withstand the nothing", "mountain")` 應返回 `false`。 ```js assert( confirmEnding( 'If you want to save our world, you must hurry. We dont know how much longer we can withstand the nothing', 'mountain' ) === false ); ``` `confirmEnding("Abstraction", "action")` 應該返回 `true`。 ```js assert(confirmEnding('Abstraction', 'action') === true); ``` 不應使用內置方法 `.endsWith()` 來完成挑戰。 ```js assert(!/\.endsWith\(.*?\)\s*?;?/.test(code) && !/\['endsWith'\]/.test(code)); ``` # --seed-- ## --seed-contents-- ```js function confirmEnding(str, target) { return str; } confirmEnding("Bastian", "n"); ``` # --solutions-- ```js function confirmEnding(str, target) { return str.substring(str.length - target.length) === target; } confirmEnding("Bastian", "n"); ```