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Tag Archives: number variables in JavaScript

JavaScript variables

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Table of content:

  • What is a variable?
  • What are variable used for?
  • Variables as Placeholders for Unknown Values
  • Variables as Time-Savers
  • Variables as Code Clarifiers
  • How variables work in JavaScript
  • JavaScript reserved words
  • Variable types in JavaScript
  • Number variables
  • String variables
  • Boolean variables
  • Null variables
  • Escaping characters
  • Special characters in JavaScript
  • How to use variables in scripts?

What is a variable?

A variable represents or hold a value.

Let’s consider the very commonly use example x=2. The name of the variable would be x and its value would be 2. The value of a variable can be changed at any given time simply by giving x a new assignment. For example x=4.

Consider the following math problem:
If x=2, then 3+x=?

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This entry was posted in JavaScript and tagged boolean variables in JavaScript, escaping characters in JavaScript, how to use variables in scripts in JavaScript, null variables in JavaScript, number variables in JavaScript, reserved words in JavaScript, special characters in JavaScript, string variables in JavaScript, Variable types in JavaScript, variables as code clarifiers in JavaScript, variables as placeholders in JavaScript, variables as time-savers in JavaScript, variables in JavaScript, what are variables used for in JavaScript, what is a variable in JavaScript on 2020-07-21 by ddnro.

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