chapter 2
BasicJavaScript
Now that you have had a chance to run some simple JavaScript programs, we're ready for a technical look at the basic elements of the language itself.
2.1 Expressions
We'll start our overview of the language with expressions. An expression is code that is evaluated. Let's evaluate some expressions:
Expressions are made up of values, such as 8.1, true, and “dog”, and operators, such as + (addition) and * (multiplication). Every value in JavaScript is either
A Boolean (true or false),
A number,
A string,
The ...
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