What is the js identifier pattern

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1. Is a legal JavaScript identifier, except that the identifier does not include the $character, but cannot be a type name.

2. Identifiers and type names in the schema are case-sensitive and consistent with js syntax. The identifier pattern always successfully matches any value.

Although the wildcard pattern is an identifier, it is actually a discard, which represents a value that cannot be used at all. Used for placeholder only. The same name does not cause a name conflict.

Example

Test ("value ID", () = > {let y = match ('x') let v = y (5) let w = y ({}) expect (v) .toEqual (true) expect (w) .toEqual (true)}) Thank you for reading. This is the content of "what is js Identifier pattern". After studying this article, I believe you have a deeper understanding of what js Identifier pattern is. The specific use situation still needs to be verified by practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!