Array from Method

JavaScript has an Array method called from( ) which will allow us to quickly and easily create a shallow copy of an Array.

[rotrose]

3 minutes, every things about shallow copy is cleared., a feat that can only done by you. Thank you.

[DmitriAlõvajev]

function monkeyCount(n) {
return Array.from({length :n}, (_, i) => i + 1)
}

Hi there. Could you, please, explain that example above? The purpose of the function is create array from one to given (n) number, but how does it work?

Thanks in advance!

[js_programmer]

so Array.from() is basically the same as [...names]

[michaelblum]

Hey Steve, thanks for the video (funnily enough, I just saw .from() chained between an array variable and a forEach() loop in another video about an hour ago). I was wondering, when/why do you think something like .from() would be used? I didn't particularly grasp why it was used in the example I came across, and not totally sure when/why one would use this as opposed to copying an array with slice. Thanks!

[Tommyandersen]

Thank for explaining it in a easy and understandable way :)

[panpanzhang]

Thank for your clear explanation, but I also saw an example of using array: Array.from({length: 5}, (v, i) => i); the object "{length:5}" tell the Array.from() method to generate an array with the specified length. Just found out you did not cover this part:)

[JS-zmse]

We can just assign one array to other instead of this right?

[dhahn]

thanks Steve! great explanation can you please create more of these videos? :)

[indigosay]

How to make a full copy of inner objects, too?