How do I add slashes to a string in Javascript?

Question

Just a string. Add \\\' to it every time there is a single quote.

Answer 1

replace works for the first quote, so you need a tiny regular expression:

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

Answer 2

var str = "This is a single quote: ' and so is this: '";
console.log(str);

var replaced = str.replace(/'/g, "\\'");
console.log(replaced);

Gives you:

This is a single quote: ' and so is this: '
This is a single quote: \' and so is this: \'