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This article focuses on "how to use Array objects in JavaScript". Friends who are interested may wish to have a look. The method introduced in this paper is simple, fast and practical. Let the editor take you to learn how to use Array objects in JavaScript.

JavaScript Array object reference manual

Array object

The Array object is used to store multiple values in a single variable.

The syntax for creating an Array object:

NewArray (); newArray (size); newArray (element0,element0,...,elementn)

Parameters.

The parameter size is the expected number of array elements. The returned array, the length field will be set to the value of size.

The parameter element...,elementn is a list of parameters. When the constructor Array () is called with these parameters, the elements of the newly created array are initialized to these values. Its length field will also be set to the number of parameters.

Return value

Returns the newly created and initialized array.

If the constructor Array () is called without arguments, the returned array is empty and the length field is 0.

When the constructor is called, it is passed only one numeric argument, which returns an array with the specified number of elements undefined.

When Array () is called by another parameter, the constructor initializes the array with the value specified by the parameter.

When the constructor is called as a function without using the new operator, it behaves exactly as it does when it is called with the new operator.

Array object Properties

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Array object method

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