Скачать или смотреть JavaScript Fundamentals: Checking Each Element of an Array

If you need to check each element in a JavaScript array against some criteria, you should use either the some or every method of arrays. In this tutorial we dive into these methods in great detail.

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Tutorials referred to in this video:
Filtering an array:    • JavaScript Fundamentals: Filtering an Array  
Mapping to a new array:    • JavaScript Fundamentals: Mapping a JavaScr...  
Reducing an array to a single value:    • JavaScript Fundamentals: Reducing an Array...  
Higher Order Functions:    • Higher Order Functions: A JavaScript Stron...  
Understanding JavaScript Callbacks:    • Understanding JavaScript Callbacks  
ES5 Array Methods:    • Getting Comfortable with the ES5 Array Met...