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This article mainly introduces how to use the expansion operator in ES6. It is very detailed and has a certain reference value. Friends who are interested must finish reading it.

Common minor optimizations for ES6-unfold operator

The return value is the keyword that we usually use to return the final result of the function. The arrow function with only one statement can implicitly return the result (the function must omit parentheses ({}) in order to omit the return keyword).

To return a multiline statement, such as object text, you need to wrap the function body with () instead of {}. This ensures that the code evaluates as a single statement.

Const odd = [1,3,5] const arr = [1,2,3,4] / / Badconst nums = [2,4,6] .concat (odd) const arr2 = arr.slice () / / Goodconst nums = [2,4,6,... odd] const arr2 = [. Arr] these are all the contents of the article "how to use the unfold operator in ES6". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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