How to use charcode to judge whether a character is a Chinese character?

What is the charcode range of

Chinese characters?
can punctuation marks of full-width and half-width also be expressed in charcode range?

Unicode ascii javascript

Mar.02,2021

console.log(str.match(/[\u0000-\u00ff]/g))     //   
console.log(str.match(/[\u4e00-\u9fa5]/g))     //   
console.log(str.match(/[\uff00-\uffff]/g))     //

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b34eb8-2bf35.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b34eb8-2bf35.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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