ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
84 lines
2.3 KiB
Markdown
84 lines
2.3 KiB
Markdown
---
|
|
id: 587d7db4367417b2b2512b90
|
|
title: 同时用多种模式匹配文字字符串
|
|
challengeType: 1
|
|
forumTopicId: 301345
|
|
dashedName: match-a-literal-string-with-different-possibilities
|
|
---
|
|
|
|
# --description--
|
|
|
|
使用正则表达式`/coding/`，你可以在其他字符串中查找`"coding"`。
|
|
|
|
这对于搜寻单个字符串非常有用，但仅限于一种匹配模式。你可以使用`|`操作符来匹配多个规则。
|
|
|
|
此操作符匹配操作符前面或后面的字符。例如，如果你想匹配`"yes"`或`"no"`，你需要的正则表达式是`/yes|no/`。
|
|
|
|
你还可以匹配多个规则，这可以通过添加更多的匹配模式来实现。这些匹配模式将包含更多的`|`操作符来分隔它们，比如`/yes|no|maybe/`。
|
|
|
|
# --instructions--
|
|
|
|
完成正则表达式`petRegex`以匹配`"dog"`、`"cat"`、`"bird"`或者`"fish"`。
|
|
|
|
# --hints--
|
|
|
|
对于字符串`'John has a pet dog.'`，你的正则表达式`petRegex`的`test`方法应该返回`true`。
|
|
|
|
```js
|
|
assert(petRegex.test('John has a pet dog.'));
|
|
```
|
|
|
|
对于字符串`'Emma has a pet rock.'`，你的正则表达式`petRegex`的`test`方法应该返回`false`。
|
|
|
|
```js
|
|
assert(!petRegex.test('Emma has a pet rock.'));
|
|
```
|
|
|
|
对于字符串`'Emma has a pet bird.'`，你的正则表达式`petRegex`的`test`方法应该返回`true`。
|
|
|
|
```js
|
|
assert(petRegex.test('Emma has a pet bird.'));
|
|
```
|
|
|
|
对于字符串`'Liz has a pet cat.'`，你的正则表达式`petRegex`的`test`方法应该返回`true`。
|
|
|
|
```js
|
|
assert(petRegex.test('Liz has a pet cat.'));
|
|
```
|
|
|
|
对于字符串`'Kara has a pet dolphin.'`，你的正则表达式`petRegex`的`test`方法应该返回`false`。
|
|
|
|
```js
|
|
assert(!petRegex.test('Kara has a pet dolphin.'));
|
|
```
|
|
|
|
对于字符串`'Alice has a pet fish.'`，你的正则表达式`petRegex`的`test`方法应该返回`true`。
|
|
|
|
```js
|
|
assert(petRegex.test('Alice has a pet fish.'));
|
|
```
|
|
|
|
对于字符串`'Jimmy has a pet computer.'`，你的正则表达式`petRegex`的`test`方法应该返回`false`。
|
|
|
|
```js
|
|
assert(!petRegex.test('Jimmy has a pet computer.'));
|
|
```
|
|
|
|
# --seed--
|
|
|
|
## --seed-contents--
|
|
|
|
```js
|
|
let petString = "James has a pet cat.";
|
|
let petRegex = /change/; // Change this line
|
|
let result = petRegex.test(petString);
|
|
```
|
|
|
|
# --solutions--
|
|
|
|
```js
|
|
let petString = "James has a pet cat.";
|
|
let petRegex = /dog|cat|bird|fish/; // Change this line
|
|
let result = petRegex.test(petString);
|
|
```
|