2018-10-10 18:03:03 -04:00
|
|
|
---
|
|
|
|
id: 587d7db5367417b2b2512b97
|
2020-12-16 00:37:30 -07:00
|
|
|
title: 匹配字母表中的数字和字母
|
2018-10-10 18:03:03 -04:00
|
|
|
challengeType: 1
|
2020-08-04 15:14:01 +08:00
|
|
|
forumTopicId: 301356
|
2021-01-13 03:31:00 +01:00
|
|
|
dashedName: match-numbers-and-letters-of-the-alphabet
|
2018-10-10 18:03:03 -04:00
|
|
|
---
|
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
# --description--
|
|
|
|
|
|
|
|
使用连字符(`-`)匹配字符范围并不仅限于字母。它还可以匹配一系列数字。
|
|
|
|
|
|
|
|
例如,`/[0-5]/`匹配`0`和`5`之间的任意数字,包含`0`和`5`。
|
|
|
|
|
2020-08-04 15:14:01 +08:00
|
|
|
此外,还可以在单个字符集中组合一系列字母和数字。
|
|
|
|
|
|
|
|
```js
|
|
|
|
let jennyStr = "Jenny8675309";
|
|
|
|
let myRegex = /[a-z0-9]/ig;
|
|
|
|
// matches all letters and numbers in jennyStr
|
|
|
|
jennyStr.match(myRegex);
|
|
|
|
```
|
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
# --instructions--
|
2018-10-10 18:03:03 -04:00
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
创建一个正则表达式,使其可以匹配`h`和`s`之间的一系列字母,以及`2`和`6`之间的一系列数字。请记得在正则表达式中包含恰当的标志。
|
2018-10-10 18:03:03 -04:00
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
# --hints--
|
2018-10-10 18:03:03 -04:00
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
你的正则表达式`myRegex`应该匹配 17 项。
|
2018-10-10 18:03:03 -04:00
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
```js
|
|
|
|
assert(result.length == 17);
|
2018-10-10 18:03:03 -04:00
|
|
|
```
|
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
你的正则表达式`myRegex`应该使用全局标志。
|
2018-10-10 18:03:03 -04:00
|
|
|
|
|
|
|
```js
|
2020-12-16 00:37:30 -07:00
|
|
|
assert(myRegex.flags.match(/g/).length == 1);
|
2018-10-10 18:03:03 -04:00
|
|
|
```
|
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
你的正则表达式`myRegex`应该使用忽略大小写的标志。
|
2018-10-10 18:03:03 -04:00
|
|
|
|
|
|
|
```js
|
2020-12-16 00:37:30 -07:00
|
|
|
assert(myRegex.flags.match(/i/).length == 1);
|
2018-10-10 18:03:03 -04:00
|
|
|
```
|
2020-08-04 15:14:01 +08:00
|
|
|
|
2021-01-13 03:31:00 +01:00
|
|
|
# --seed--
|
|
|
|
|
|
|
|
## --seed-contents--
|
|
|
|
|
|
|
|
```js
|
|
|
|
let quoteSample = "Blueberry 3.141592653s are delicious.";
|
|
|
|
let myRegex = /change/; // Change this line
|
|
|
|
let result = myRegex; // Change this line
|
|
|
|
```
|
|
|
|
|
2020-12-16 00:37:30 -07:00
|
|
|
# --solutions--
|
|
|
|
|
2021-01-13 03:31:00 +01:00
|
|
|
```js
|
|
|
|
let quoteSample = "Blueberry 3.141592653s are delicious.";
|
|
|
|
let myRegex = /[h-s2-6]/gi; // Change this line
|
|
|
|
let result = quoteSample.match(myRegex); // Change this line
|
|
|
|
```
|