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JavaScript

Posted by Derek Hutson
Derek Hutson
9,740 Points

Using quote marks in javascript

Hi all,

I was wondering when exactly are you supposed to use quote marks and does it matter if it is single or double? Does it have to be the same single/double consistency in each statement? I know that you don't use them around variable names or when listing a variable.. but that's about it. Thanks!

1 Answer

Steven Parker
Steven Parker
243,266 Points
Steven Parker
Steven Parker
243,266 Points

Quote marks are used to create a string literal, when you want a word or phrase to be used as itself and not represent something else (as a variable would).

JavaScript supports 3 kinds of marks for quoting, the "double" or standard quote ("), the apostrophe or "single" quote ('), and the accent or "back-tick" (`). They can be used interchangeably, even on the same line, as long as they are always in matched pairs. However, the third type is usually only used to create a template literal for interpolation (substitution of expressions or symbolic references).

Some examples:

document.write("Here is a normal string literal.<br>");
document.write('Single quotes are good when double quote(s) are inside... " &larr;see?<br>');
document.write(`Template literals can have expressions inside: A week has ${24*7} hours.`);