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

Talking about performance, quotes will never be your bottleneck. However, the performance is the same in both cases.

Talking about coding speed, if you use ' for delimiting a string, you will need to escape " quotes. You are more likely to need to use " inside the string. Example:

// JSON Objects:
var jsonObject = '{"foo":"bar"}';

// HTML attributes:
document.getElementById("foobar").innerHTML = '';

Then, I prefer to use ' for delimiting the string, so I have to escape fewer characters.