Regular matching of comments in js

This time I will bring you the regular rules for matching annotations in js, and what are the precautions for matching the regular rules for annotations in js. The following is a practical case, let's take a look.

Sometimes we need to remove js comments to reduce redundancy in the code. Sometimes too many comments lead to a large page size.

The comment icon is as follows:

1. Match multi-line comments

Regular expression:

/(?:^|\n|\r)\s*\/\*[\s\S]*?\*\/\s*(?:\r|\n|$)/g

2 .Single-line comment regular expression:

/(?:^|\n|\r)\s*\/\/.*(?:\r|\n|$)/g

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Recommended reading:

Detailed explanation of the use of the \D metacharacter (equivalent to "[^0-9]") in regular expressions

Regular metacharacters and ordinary characters

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