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This article mainly introduces the relevant knowledge of "what is the concept of variables in javascript". Xiaobian shows you the operation process through actual cases. The operation method is simple and fast and practical. I hope this article "what is the concept of variables in javascript" can help you solve the problem.

In javascript, a container used to store data. It can be used to store values and expressions. Variables must start with a letter and variable names are case-sensitive.

Operating environment: windows 10 system, javascript 1.8.5, thinkpad t480 computer.

Variables are "containers" for storing data. Like algebra, JavaScript variables can be used to store values (e.g. x=5) and expressions (e.g. z=x+y).

Variables can have short names (such as x and y) or more descriptive names.

Note:

Variables must begin with a letter

Variables can also start with the $and_sign (although this is not recommended)

Variable names are case sensitive (y and Y are different variables)

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