Level up your JavaScript skills! This deck covers 30 essential array methods that every JavaScript developer should know. From basic operations like map and filter to advanced methods like reduce and flatMap, these methods are fundamental to modern JavaScript development. Each card shows the method, its syntax, parameters, return value, and practical examples. Perfect for beginners and intermediate developers looking to write cleaner, more functional code.
array.map()
Creates a new array with results of calling a function on every element
array.filter()
Creates a new array with elements that pass a test function
array.reduce()
Reduces array to a single value by executing a reducer function
array.find()
Returns the first element that satisfies a test function
array.forEach()
Executes a function for each array element (no return value)
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