正则表达式只匹配长字符串中的单词和特殊字符

Question

我有一个javascript函数，我试图匹配长字符串中的每个单词，我有匹配工作基本上只是在空格上爆炸，虽然我想修改我的正则表达式自动删除特殊字符，如！ ， - 等。

例如：

var a = 'This! is a sample sentence, only words should be extracted from it!!';

我正在寻找正则表达式的结果

{This,is,a,sample,sentence,only,words,should,be,extracted,from,it}

Answer 1

试试这个

> var a = 'This! is a sample sentence, only words should be extracted from it!!';

> a.match(/\w+/g);

["This", "is", "a", "sample", "sentence", "only", "words", "should", "be", "extracted", "from", "it"]

Answer 2

不考虑拆分，而是考虑“匹配”“字字符：

var a = 'This! is a sample sentence, only words should be extracted from it!!';
a.match(/\w+/g);
//["This", "is", "a", "sample", "sentence", "only", "words", "should", "be", "extracted", "from", "it"]

只抓取单词字符表示不在字符类[A-Za-z0-9_]中的任何内容被删除并视为分隔符。