how to escape characters in nodejs?

Question

I was wondering how would you escape special characters in nodejs. I have a string $what$ever$ and I need it escaped like \$what\$ever\$ before i call a python script with it.

I tried querystring npm package but it does something else.

It's JavaScript, so start by finding out what you do and don't need to escape and how to escape it: Regular Expression — zero298
– zero298, Commented Mar 17, 2014 at 21:40

technomage · Accepted Answer · 2021-08-26 17:56:30Z

28

You can do this without any modules:

str.replace(/\\/g, "\\\\") .replace(/\$/g, "\\$") .replace(/'/g, "\\'") .replace(/"/g, "\\\"");

Edit:

A shorter version:

str.replace(/[\\$'"]/g, "\\$&")

(Thanks to Mike Samuel from the comments)

edited Aug 26, 2021 at 17:56

technomage

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answered Mar 17, 2014 at 21:47

Dr. McKay

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1 Comment

Mike Samuel Over a year ago

This can be abbreviated to str.replace(/[\\$'"]/g, "\\$&")

Works On Mine · Accepted Answer · 2014-03-17 21:47:08Z

ok heres a quickie. dont expect it to be the most efficient thing out there but it does the job.

"$what$ever$".split("$").join("\\$")

The other option would be use replace. But then you would have to call it multiple times for each instance. that would be long and cumbersome. this is the shortest snippet that does the trick

Thanks all! stackoverflow.com/questions/3115150/… seems to be better.

Majid Rafei · Accepted Answer · 2024-02-09 13:54:16Z

For that I use NodeJs module "querystring".

For example:

const scapedFilename = querystring.encode({ filename }).replace('filename=', '');

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