encode/decode base64 with JS

Encoding to base64 is done with the btoa command

btoa("This is a test.")
> "VGhpcyBpcyBhIHRlc3Qu"

To decode a base64 encoded string, use the atob command

atob("VGhpcyBpcyBhIHRlc3Qu")
> "This is a test."

Có thể bạn đã miss một số snippets code

flatMap()

Use flatMap() creates a new array with sub-array elements flattened by specified depth.

Rest Operator for Objects

Now we can use rest on the properties of an Object. It allows us to explicitly extract certain named variables, and assign any uncalled variables into a catchall Object.

Promise + gì

promise + gì

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How to Await in a for loop

Remove item in array javascript es6

Những bạn nào mà đã sử dụng ES6 một thời gian rồi thì có thể sử dụng method array.filter()