How to escape all single and double quotes in JavaScript

Question

I have a variable in my script,

var st = ""

In that quotes I have to give a string and this string contains lot of single and double quotations.

I think there isn't any problem with single quotations, but a problem with the double quotes (") only.

In this I can't manually replace \" for all, even I tried with an editor that " replace with \", but it's not working.

It is unclear what is asked here. Escaping `"` as `\"` within a string literal with `"` as delimiters is sufficient. If it does not work, you should ask a specific question with an example that actually demonstrates the issue. (“Not working” is not a description of what happens.) — Jukka K. Korpela, Jun 30 '14 at 09:44
Nowadays it's Backtick Quotes (at the time op asked the question backticks weren't part of JavaScript spec yet) Here's how it works https://www.youtube.com/watch?v=4dr3y0ZT3vI — InfiniteStack, Sep 28 '21 at 20:12

score 28 · Accepted Answer · edited Jul 21 '20 at 18:42

28

You will need to use regular expression for this,

st.replace(/"/g, '\\"');

Check out more on regular expressions here.

edited Jul 21 '20 at 18:42

Peter Mortensen

answered Jun 30 '14 at 07:36

vasa

1

Here is one mistake. not st.replace(). It should be str.replace(). – karim_fci May 11 '15 at 10:59
14

the variable used in the qn is 'st'. Hence, st.replace() – vasa May 11 '15 at 23:53
@vasa minor point, this does not update 'st' in place, should use st = st.replace(/"/g, '\\"'); – blue-sky Feb 13 '17 at 20:16
@blue-sky Agree, strings are immutable in JS. – vasa Feb 15 '17 at 00:03
This does not replace single quotes. – Wes Modes Apr 28 '21 at 18:29

score 0 · Answer 2 · edited Jul 21 '20 at 18:43

0

Try this:

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

edited Jul 21 '20 at 18:43

Peter Mortensen

answered Jun 30 '14 at 07:46

DWX

6

This does not escape, it only removes all the quotes. This is not really what the OP was asking...but since you're doing the replace on the variable `str`, there's no fear about modifying original string ;-) – Erenor Paz Sep 27 '16 at 08:52

2 Answers2