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Can you name a variable?
Variable names can only contain letters, numbers, underscores, or dollar signs. Variable names are case-sensitive. Certain words may not be used as variable names, because they have other meanings within JavaScript. Check out this complete list of the reserved words.
Why naming variables is important?
Variables make code more than a static set of instructions. They allow logic to occur, enabling developers to measure time, analyze data, and customize the program to the user. Variables are so important to the code that they deserve a good name that accurately describes their purpose.
How verbose should variable names?
The rule of thumb that we should use descriptive, (presumably) verbose variable names is just that, though — a rule of thumb. To the extent that a variable name is confined to a narrow context, it is often appropriate to use a shorter, less descriptive variable name.
What’s the proper way to name a variable?
There should be enough distinctions in the variable naming. Don’t just append a number if you have a variable with the same name in the scope: a1, a2 is the opposite of intention-revealing. Don’t use names with similar meanings. For instance, product_data and product_info do not have a proper distinction.
What are the rules for naming variables in JavaScript?
Rules for Naming Variables. JavaScript has only a few rules for variable names: The first character must be a letter or an underscore (_). You can’t use a number as the first character. The rest of the variable name can include any letter, any number, or the underscore.
Which is the correct naming convention for a variable?
The standard naming conventions used in modern software development are as follows: Popularized by the Turbo Pascal programming language, Pascal case requires the first letter of a variable be uppercase, along with the first letter of every new word compounded together to create the variable.
Which is the best book for naming variables?
Clean Code: Naming. Best practices for naming variables… | by Shubhashis Roy Dipta | Better Programming Welcome to the first part of the clean code series. This series will be highly inspired by and sometimes embarrassingly copied from the Clean Code book by Robert C. Martin (Uncle Bob). I highly recommend reading the book.