freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-whitespace.chinese.md

id, title, challengeType, forumTopicId, localeTitle

id	title	challengeType	forumTopicId	localeTitle
587d7db8367417b2b2512ba3	Match Whitespace	1	301359	匹配空白字符

Description

迄今为止的挑战包括匹配的字母和数字。还可以匹配字母之间的空格。 可以使用\s搜寻空格，其中s是小写。此匹配模式不仅匹配空格，还匹配回车符、制表符、换页符和换行符，可以将其视为与[\r\t\f\n\v]类似。

let whiteSpace = "Whitespace. Whitespace everywhere!"
let spaceRegex = /\s/g;
whiteSpace.match(spaceRegex);
// Returns [" ", " "]

Instructions

修改正则表达式countWhiteSpace查找字符串中的多个空白字符。

Tests

tests:
  - text: 你的正则表达式应该使用全局状态修正符。
    testString: assert(countWhiteSpace.global);
  - text: 正则表达式应该使用元字符 <code>\s</code> 匹配所有的空白。
    testString: assert(/\\s/.test(countWhiteSpace.source));
  - text: "你的正则表达式应该在<code>'Men are from Mars and women are from Venus.'</code>中匹配到 8 个空白字符。"
    testString: assert("Men are from Mars and women are from Venus.".match(countWhiteSpace).length == 8);
  - text: '你的正则表达式应该在<code>"Space: the final frontier."</code>中匹配到 3 个空白字符。'
    testString: 'assert("Space: the final frontier.".match(countWhiteSpace).length == 3);'
  - text: "你的正则表达式在<code>'MindYourPersonalSpace'</code>中应该匹配不到空白字符。"
    testString: assert("MindYourPersonalSpace".match(countWhiteSpace) == null);

Challenge Seed

let sample = "Whitespace is important in separating words";
let countWhiteSpace = /change/; // Change this line
let result = sample.match(countWhiteSpace);

Solution

let sample = "Whitespace is important in separating words";
let countWhiteSpace = /\s/g;
let result = sample.match(countWhiteSpace);