When should I use double or single quotes in JavaScript?

Question

console.log("double"); vs. console.log(\'single\');

I see more and more JavaScript libraries out there using single quotes when ha

Answer 1

Just to add my two cents: In working with both JavaScript and PHP a few years back, I've become accustomed to using single quotes so I can type the escape character ('') without having to escape it as well. I usually used it when typing raw strings with file paths, etc.

Anyhow, my convention ended up becoming the use of single quotes on identifier-type raw strings, such as if (typeof s == 'string') ... (in which escape characters would never be used - ever), and double quotes for texts, such as "Hey, what's up?". I also use single quotes in comments as a typographical convention to show identifier names. This is just a rule of thumb, and I break off only when needed, such as when typing HTML strings ' like so ' (though you could reverse the quotes here also). I'm also aware that, in the case of JSON, double quotes are used for the names - but outside that, personally, I prefer the single quotes when escaping is never required for the text between the quotes - like document.createElement('div').

The bottom line is, and as some have mentioned/alluded to, to pick a convention, stick with it, and only deviate when necessary.