2021-05-05 10:13:49 -07:00
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---
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id: a2f1d72d9b908d0bd72bb9f6
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title: 創建一個人員對象
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challengeType: 5
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forumTopicId: 16020
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dashedName: make-a-person
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---
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# --description--
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用以下方法填充對象構造函數:
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```js
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getFirstName()
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getLastName()
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getFullName()
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setFirstName(first)
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setLastName(last)
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setFullName(firstAndLast)
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```
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運行測試以查看每個方法的預期輸出。 方法接收一個參數,因此必須要有一個參數,並且其類型應該爲字符串。 這些方法必須是與對象交互的唯一可用方法。
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# --hints--
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2021-10-18 08:17:43 -07:00
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不應添加屬性。 `Object.keys(bob).length` 應返回 6。
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2021-05-05 10:13:49 -07:00
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```js
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2021-10-18 08:17:43 -07:00
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assert.strictEqual(
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Object.keys((function () {
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let bob = new Person('Bob Ross');
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bob.setFirstName('Haskell');
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bob.setLastName('Curry');
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bob.setFullName('John Smith');
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return bob;
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})()).length,
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6
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);
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2021-05-05 10:13:49 -07:00
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```
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`bob instanceof Person` 應返回 `true`。
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```js
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assert.deepEqual(bob instanceof Person, true);
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```
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`bob.firstName` 應該返回 `undefined`。
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```js
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assert.deepEqual(bob.firstName, undefined);
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```
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`bob.lastName` 應該返回 `undefined`。
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```js
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assert.deepEqual(bob.lastName, undefined);
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```
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`bob.getFirstName()` 應該返回字符串 `Bob`.
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```js
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assert.deepEqual(bob.getFirstName(), 'Bob');
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```
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`bob.getLastName()` 應該返回字符串 `Ross`.
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```js
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assert.deepEqual(bob.getLastName(), 'Ross');
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```
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`bob.getFullName()` 應該返回字符串 `Bob Ross`.
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```js
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assert.deepEqual(bob.getFullName(), 'Bob Ross');
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```
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`bob.getFullName()` 應該在 `bob.setFirstName("Haskell")` 之後返回字符串 `Haskell Ross`。
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```js
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assert.strictEqual(
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(function () {
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bob.setFirstName('Haskell');
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return bob.getFullName();
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})(),
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'Haskell Ross'
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);
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```
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`bob.getFullName()` 應該在 `bob.setLastName("Curry")` 之後返回字符串 `Haskell Curry`。
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```js
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assert.strictEqual(
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(function () {
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var _bob = new Person('Haskell Ross');
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_bob.setLastName('Curry');
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return _bob.getFullName();
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})(),
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'Haskell Curry'
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);
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```
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`bob.getFullName()` 應該返回字符串 `Haskell Curry` 之後的 `bob.setFullName("Haskell Curry")`。
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```js
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assert.strictEqual(
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(function () {
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bob.setFullName('Haskell Curry');
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return bob.getFullName();
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})(),
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'Haskell Curry'
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);
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```
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`bob.getFirstName()` 應該返回字符串 `Haskell` 之後的 `bob.setFullName("Haskell Curry")`。
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```js
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assert.strictEqual(
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(function () {
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bob.setFullName('Haskell Curry');
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return bob.getFirstName();
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})(),
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'Haskell'
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);
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```
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`bob.getLastName()` 應該返回字符串 `Curry` 之後 `bob.setFullName("Haskell Curry")`。
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```js
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assert.strictEqual(
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(function () {
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bob.setFullName('Haskell Curry');
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return bob.getLastName();
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})(),
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'Curry'
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);
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```
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# --seed--
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## --after-user-code--
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```js
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if(bob){
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bob = new Person("Bob Ross");
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}
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```
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## --seed-contents--
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```js
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2021-10-27 15:10:57 +00:00
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const Person = function(firstAndLast) {
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2021-05-05 10:13:49 -07:00
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// Only change code below this line
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// Complete the method below and implement the others similarly
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this.getFullName = function() {
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return "";
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};
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return firstAndLast;
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};
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2021-10-27 15:10:57 +00:00
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const bob = new Person('Bob Ross');
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2021-05-05 10:13:49 -07:00
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bob.getFullName();
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```
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# --solutions--
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```js
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2021-10-27 15:10:57 +00:00
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const Person = function(firstAndLast) {
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2021-10-27 15:10:57 +00:00
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let firstName, lastName;
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2021-05-05 10:13:49 -07:00
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function updateName(str) {
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firstName = str.split(" ")[0];
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lastName = str.split(" ")[1];
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}
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updateName(firstAndLast);
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this.getFirstName = function(){
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return firstName;
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};
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this.getLastName = function(){
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return lastName;
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};
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this.getFullName = function(){
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return firstName + " " + lastName;
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};
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this.setFirstName = function(str){
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firstName = str;
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};
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this.setLastName = function(str){
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lastName = str;
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};
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this.setFullName = function(str){
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updateName(str);
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};
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};
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2021-10-27 15:10:57 +00:00
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const bob = new Person('Bob Ross');
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2021-05-05 10:13:49 -07:00
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bob.getFullName();
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```
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