65 lines
1.4 KiB
Markdown
65 lines
1.4 KiB
Markdown
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---
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id: ab6137d4e35944e21037b769
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title: 句中單詞首字母大寫
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challengeType: 5
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forumTopicId: 16088
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dashedName: title-case-a-sentence
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---
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# --description--
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請將傳入的字符串中，每個單詞的第一個字母變成大寫並返回。 注意除首字母外，其餘的字符都應是小寫的。
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在這個挑戰中，我們還需要將諸如 `the` 和 `of` 之類的連接詞大寫。
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# --hints--
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`titleCase("I'm a little tea pot")` 應返回一個字符串。
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```js
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assert(typeof titleCase("I'm a little tea pot") === 'string');
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```
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`titleCase("I'm a little tea pot")` 應返回 `I'm A Little Tea Pot`。
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```js
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assert(titleCase("I'm a little tea pot") === "I'm A Little Tea Pot");
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```
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`titleCase("sHoRt AnD sToUt")` 應返回 `Short And Stout`。
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```js
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assert(titleCase('sHoRt AnD sToUt') === 'Short And Stout');
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```
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`titleCase("HERE IS MY HANDLE HERE IS MY SPOUT")` 應返回 `Here Is My Handle Here Is My Spout`。
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```js
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assert(
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titleCase('HERE IS MY HANDLE HERE IS MY SPOUT') ===
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'Here Is My Handle Here Is My Spout'
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);
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```
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# --seed--
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## --seed-contents--
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```js
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function titleCase(str) {
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return str;
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}
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titleCase("I'm a little tea pot");
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```
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# --solutions--
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```js
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function titleCase(str) {
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return str.split(' ').map(word => word.charAt(0).toUpperCase() + word.substring(1).toLowerCase()).join(' ');
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}
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titleCase("I'm a little tea pot");
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```
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