2018-10-10 22:03:03 +00:00
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---
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id: a6b0bb188d873cb2c8729495
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2021-03-15 03:20:39 +00:00
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title: 转换 HTML 字符实体
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2020-12-16 07:37:30 +00:00
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challengeType: 5
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2021-01-12 16:18:51 +00:00
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forumTopicId: 16007
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2021-01-13 02:31:00 +00:00
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dashedName: convert-html-entities
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2018-10-10 22:03:03 +00:00
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---
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2020-12-16 07:37:30 +00:00
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# --description--
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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请将字符串中的 `&`、`<`、`>`、`"`(双引号)和 `'`(单引号)转换为相应的 HTML 字符实体。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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# --hints--
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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`convertHTML("Dolce & Gabbana")` 应返回 `Dolce & Gabbana`。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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```js
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assert.match(convertHTML('Dolce & Gabbana'), /Dolce & Gabbana/);
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```
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2021-03-15 03:20:39 +00:00
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`convertHTML("Hamburgers < Pizza < Tacos")` 应返回 `Hamburgers < Pizza < Tacos`。
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2018-10-10 22:03:03 +00:00
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```js
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2020-12-16 07:37:30 +00:00
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assert.match(
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convertHTML('Hamburgers < Pizza < Tacos'),
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/Hamburgers < Pizza < Tacos/
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);
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```
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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`convertHTML("Sixty > twelve")` 应返回 `Sixty > twelve`。
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2020-12-16 07:37:30 +00:00
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```js
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assert.match(convertHTML('Sixty > twelve'), /Sixty > twelve/);
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2018-10-10 22:03:03 +00:00
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```
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2021-03-15 03:20:39 +00:00
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`convertHTML('Stuff in "quotation marks"')` 应返回 `Stuff in "quotation marks"`。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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```js
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assert.match(
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convertHTML('Stuff in "quotation marks"'),
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/Stuff in "quotation marks"/
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);
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```
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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`convertHTML("Schindler's List")` 应返回 `Schindler's List`。
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2020-12-16 07:37:30 +00:00
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```js
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assert.match(convertHTML("Schindler's List"), /Schindler's List/);
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```
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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`convertHTML("<>")` 应返回 `<>`。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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```js
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assert.match(convertHTML('<>'), /<>/);
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```
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2018-10-10 22:03:03 +00:00
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2021-03-15 03:20:39 +00:00
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`convertHTML("abc")` 应该返回字符串 `abc`。
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2020-09-07 08:10:29 +00:00
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2018-10-10 22:03:03 +00:00
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```js
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2020-12-16 07:37:30 +00:00
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assert.strictEqual(convertHTML('abc'), 'abc');
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2018-10-10 22:03:03 +00:00
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```
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2020-08-13 15:24:35 +00:00
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2021-01-13 02:31:00 +00:00
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# --seed--
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## --seed-contents--
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```js
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function convertHTML(str) {
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return str;
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}
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convertHTML("Dolce & Gabbana");
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```
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2020-12-16 07:37:30 +00:00
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# --solutions--
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2021-01-13 02:31:00 +00:00
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```js
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var MAP = { '&': '&',
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'<': '<',
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'>': '>',
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'"': '"',
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"'": '''};
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function convertHTML(str) {
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return str.replace(/[&<>"']/g, function(c) {
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return MAP[c];
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});
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}
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```
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