当我们检查字符串中是否包含汉字的时候，或许会考虑使用正则来做
搜索引擎会告诉我们一个答案，他很好用
const 纯汉字reg = /[\u4E00-\u9FCC\u3400-\u4DB5\uFA0E\uFA0F\uFA11\uFA13\uFA14\uFA1F\uFA21\uFA23\uFA24\uFA27-\uFA29]|[\uD840-\uD868][\uDC00-\uDFFF]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|[\uD86A-\uD86C][\uDC00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]/
const 汉字标点reg = /[\u3002|\uFF1F|\uFF01|\uFF0C|\u3001|\uFF1B|\uFF1A|\u201C|\u201D|\u2018|\u2019|\uFF08|\uFF09|\u300A|\u300B|\u3008|\u3009|\u3010|\u3011|\u300E|\u300F|\u300C|\u300D|\uFE43|\uFE44|\u3014|\u3015|\u2026|\u2014|\uFF5E|\uFE4F|\uFFE5]/
const 汉字和标点reg = /[\u4E00-\u9FA5|\u3002|\uFF1F|\uFF01|\uFF0C|\u3001|\uFF1B|\uFF1A|\u201C|\u201D|\u2018|\u2019|\uFF08|\uFF09|\u300A|\u300B|\u3008|\u3009|\u3010|\u3011|\u300E|\u300F|\u300C|\u300D|\uFE43|\uFE44|\u3014|\u3015|\u2026|\u2014|\uFF5E|\uFE4F|\uFFE5|[\u3400-\u4DB5\u4E00-\u9FEA\uFA0E\uFA0F\uFA11\uFA13\uFA14\uFA1F\uFA21\uFA23\uFA24\uFA27-\uFA29]|[\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]]/
但是现在我们有了一个更好的解决方案
const 汉字reg = /\p{Script=Han}/u
!!'你好'.match(/\p{Script=Han}/u) // true
或者我们可以加上汉字的符号
const 汉字和汉字符号正则 = /\p{Script=Han}|[\u3002|\uFF1F|\uFF01|\uFF0C|\u3001|\uFF1B|\uFF1A|\u201C|\u201D|\u2018|\u2019|\uFF08|\uFF09|\u300A|\u300B|\u3008|\u3009|\u3010|\u3011|\u300E|\u300F|\u300C|\u300D|\uFE43|\uFE44|\u3014|\u3015|\u2026|\u2014|\uFF5E|\uFE4F|\uFFE5]/u
它被称为Unicode 属性转义，已经在Chrome 64、Firefox 79、Safari 11.1 和 Node.js 10中可用。
所有可用的在这里