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This article mainly introduces how to use short-circuit writing method in js. It is very detailed and has certain reference value. Friends who are interested must finish reading it.

Null, Undefined,''null check

Sometimes to check whether the variable we refer to for the value is not null or Undefined or'', we can use short-circuit writing

/ / Badif (first! = = null | | first! = = undefined | | first! = ='') {let second = first;} / / Good short circuit let second = first | |'; above is all the content of the article "how to use short circuit in js". 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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