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Editor to share with you whether there is a list type in javascript, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

There is no list data type in JavaScript. The List type is to solve the problem of immutable array length, but this problem does not exist in JavaScript. Most of the functions of List are also available in JavaScript arrays.

The operating environment of this tutorial: windows10 system, javascript1.8.5 version, Dell G3 computer.

Is there a list type for javascript?

JavaScript can define array types, and there is no so-called List type.

There is also no need for the List type to exist in JavaScript. The List type of JAVA is designed to solve the problem of immutable array length, but JavaScript does not exist from this problem. JavaScript's array length is variable, and there are many practical ways to use it. It is much more flexible than JAVA's array. Most of the functions of JAVA's List and JavaScript's array also have.

Arrays of JavaScript can be defined in the following ways:

Var arr = []; / / define an empty array

Var arr = [1, 2, 3]; / / define an array with elements.

Var arr = new Array (); / / define an empty array, verbose

Var arr = new Array (5); / / define an array of length 5, which is misleading and highly unrecommended.

Extended reading: methods of array objects

Concat () joins two or more arrays and returns the result.

CopyWithin () copies the element from the specified location of the array to another specified location of the array.

Entries () returns an array of iterable objects.

Every () detects whether each element of a numeric element meets the criteria.

Fill () populates the array with a fixed value.

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