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Single quotes can be used in JavaScript. Single quotation marks can be used as the beginning and closing characters of strings, and only the same single or double quotation marks can be used to define the beginning and end; when the same quotation marks are used within the same quotation marks, the quotation marks need to be escaped, and different quotation marks can be directly nested.

Operating environment of this tutorial: Windows 10 system, Javascript version 1.8.5, Dell G3 computer.

Javascript can use single quotes

JavaScript can use single quotes.

Both single and double quotation marks can be used as the opening and closing characters of strings, and only the same single or double quotation mark can be used to define the opening and closing characters;

Use the same quotation marks within the same quotation mark, and escape is required before use. Different quotes can be nested.

Double quotes "" can be used without backslashes, for example:

var x="my name 'is' xxx" //backslash not required here

Double quotes " " in double quotes " " requires a backslash, for example:

var x="my name \"is\" xxx" //Here you need to add a backslash before each of the two top quotes

Double quotes "" in single quotes " " do not need backslashes, but can be added, for example:

var x1 ='my name "is" xxx' //No backslash needed here (recommended) var x2 ='my name \"is\" xxx' //add backslash effect is the same (not recommended)

The test effect is shown in the following figure:

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