javascript - 使用JavaScript使用JavaScript从字符串中删除注释(Remove comments from string with JavaScript using JavaScript)

Question

There is some string (for example, 's'):(有一些字符串（例如，“ s”）：)

import 'lodash';
// TODO import jquery
//import 'jquery';

/*
Some very important comment
*/

How can I remove all comments from 's' string?(如何删除“ s”字符串中的所有注释？)

Should I use some Regexp for it?(我应该使用一些正则表达式吗？) I don't know.(我不知道。)   ask by malcoauri translate from so

Answer 1

If you want to use a RegExp, you could use this one:(如果要使用RegExp，可以使用以下一种：)

/(/*[^*]**/)|(//[^*]*)/

This should strip both // ... \n style comments and /* ... */ style comments.(这应该去除// ... \n样式注释和/* ... */样式注释。)

Full working code:(完整的工作代码：)

var stringWithoutComments = s.replace(/(/*[^*]**/)|(//[^*]*)/g, '');
console.log(stringWithoutComments);

Test with multiline strings:(用多行字符串测试：)

var s = `before
/* first line of comment
   second line of comment */
after`;
var stringWithoutComments = s.replace(/(/*[^*]**/)|(//[^*]*)/g, '');
console.log(stringWithoutComments);

outputs:(输出：)

before

after