All Pro Web Designs > > Learning Tutorials > Programming Languages > JavaScript > JavaScript Cloning an Object
Video Title: JavaScript Cloning an Object
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How to clone an image object into array slots?
Bad, bad!!! What if object contains another object??? This video makes you think that entire object is cloned. Well, only the first level. Other levels are still references.
Nice and clean with clear visible font size and without any intro music.
Perfect way to make coding tutorial videos.
Great…..bro 🔥🔥🔥
shown methods create a shallow copies, not deep ones
Thank you sir for that video It's very helpful for us
lol me
let a = { }
let b= { …a}
Hey, but does the spread { …circle } create a reference or a new object?
Not even one word about shallow copy and deep copy……………………………..
this is shallow copy!
if someone wants to make an dinamic object from a form using express (o well, this is just basic js xD) use something like this:
const obj = JSON.parse(JSON.stringify(req.body));
let objectToUpdate = {}
for (let field in obj) {
if (obj[field] !== ''){
objectToUpdate[field] = obj[field]
}
}
its not working
const circle = {
radius: 1,
draw() {
console.log('draw');
}
};
const another = ( …circle );
console.log(another);
Output:
Uncaught SyntaxError: Unexpected token '…'
Wow. You are genious
this seems like it could be simplified why is the syntax of coding so unessesary complicated? also what is an object and why would you want to copy it.. if you make it basic tutorial remember that you can ofthen be even more basic .. imagine your audience is a group of 10 year olds..
hi Mosh – how can we use Object.assign to clone and merge objects with the same property name without getting them overwritten?
This seems to only make a reference to the original. What if I need to make an actual copy of an object, so that I can change the copy without changing the original?
const another = JSON.parse( JSON.stringify(circle) )
Object.assign () cannot copy multiple source objects, only 1.
i don't understand nothing in this video ,you going so fast in this one , i see him hard and less useful in project
Man your the best , keep up the good work.
why not const another=circle; ??????????
where is deep cloning?shallow copy and deep copy?