如何从字符串中删除所有字符 [英] How to remove all characters from a string

问题描述

如何使用JavaScript RegEx从字符串中删除所有不是字母的字符?

How can I remove all characters from a string that are not letters using a JavaScript RegEx?

推荐答案

您可以使用 替换 方法:

You can use the replace method:

'Hey! The #123 sure is fun!'.replace(/[^A-Za-z]+/g, '');
>>> "HeyThesureisfun"

如果要保留空格:

'Hey! The #123 sure is fun!'.replace(/[^A-Za-z\s]+/g, '');
>>> "Hey The sure is fun"

正则表达式/[^ az \ s]/gi 基本上是说要匹配除字母az或空格(\ s)之外的任何内容，同时在全局范围内进行匹配(/code>标志)，并忽略字符串的大小写( i 标志).

The regex /[^a-z\s]/gi is basically saying to match anything not the letter a-z or a space (\s), while doing this globally (the g flag) and ignoring the case of the string (the i flag).

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