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This article mainly explains "how to understand the js array", the content of the article is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "how to understand the js array" bar!

1. The js array is an ordered collection of values, each of which is called an element or element.

Each element has a position in the array, represented by a number, called an index or subscript.

2. The array of js has no type, and the array element can be any type.

Different elements in the same array may be objects or arrays, and you can repeat the order.

3. The index of array elements is not necessarily continuous and can have gaps.

Each array has a lengrh attribute, and the length attribute is the number of array elements.

Example

Var nums = []; for (var I = 0; I

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