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How do I create an array in JavaScript?

Creating arrays in JavaScript is easy with the array literal notation. It consists of two square brackets that wrap optional array elements separated by a comma. Array elements can be any type, including number, string, Boolean, null, undefined, object, function, regular expression and other arrays.

How to clone an array in JavaScript?

How to clone an array in JavaScript Spread Operator (Shallow copy) Ever since ES6 dropped, this has been the most popular method. ... Good Old for () Loop (Shallow copy) I imagine this approach is the least popular, given how trendy functional programming's become in our circles. Good Old while () Loop (Shallow copy) Same as for -impure, imperative, blah, blah, blah...it works! ... More items...

What is an array in JavaScript?

An array in JavaScript® is a special type of variable that can hold multiple pieces of information or data values and is a storage place in memory. Those data values can be of the same type or of different types, but having different types of data in an array in JavaScript® is unusual.


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