JavaScript Concepts Flashcards

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Objects - {} Object Notation

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Objects in JavaScript are collections of key-value pairs. They are defined using curly braces {}.

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Objects - How to access attributes

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You can access object attributes using dot notation or bracket notation.

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Class - Definition of attributes and services

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Classes in JavaScript are templates for creating objects. They encapsulate data with code to work on that data.

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Equals - ==

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Compares values for equality, performing type conversion if necessary.

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Equals - ===

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Compares values and types for strict equality.

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Array functions - []

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Array notation.

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Array functions - .length

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Returns the number of elements in an array.

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Array functions - .push

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Adds one or more elements to the end of an array.

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Array functions - .filter

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Creates a new array with elements that pass a test.

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Array functions - .includes

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Checks if an array contains a certain element.