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The main difference between double quotes and single quotes is that by using double quotes, you can include variables directly within the string. It interprets the Escape sequences. Each variable will be replaced by its value.
As you may have understood now, there is no real difference between using single quotes, double quotes, or backticks. You can choose one or multiple styles based on your preference. However, It is always good to stick to a single format throughout the project to keep it neat and consistent.
In JavaScript, a string is a sequence of characters enclosed in single or double quotes. The choice of quoting style is up to the programmer, and either style has no special semantics over the other. There is no type for a single character in JavaScript - everything is always a string.
The main difference between double quotes and single quotes is, double quotes are used to denote a speech or a quotation whereas single quotes are used to indicate quote within a quotation.
You'll want to use single quotes where you want double quotes to appear inside the string (e.g. for html attributes) without having to escape them, or vice versa. Other than that, there is no difference.
However, note that JSON (JavaScript Object Notation) only supports double quoted strings.
There is a difference in JSON - The JSON standard specifies that all key,value pairs should be in double quotes. (thanks to wulfgarpro in the comments), so I have started switching to using double-quotes as much as possible so that I don't make mistakes when dealing with JSON.
Absolutly no difference. FREE QUOTING YEEHHAAA
Unlike PHP, for which using double or single quotes changes how the string is interpreted, there is no difference in the two syntaxes in ECMAScript. A string using double quotes is exactly the same as a string using single quotes. Note, however, that a string beginning with a double quote must end with a double quote, and a string beginning with a single quote must end with a single quote.
Nicholas C. Zakas - Professional JavaScript for Web Developers
They are the same, I usually use single quotes but thats because I am a .net developer and asp.net in particular so it aids me in distinguishing between the 2 types of strings.
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