What does js.? mean? The role of .?, .? (optional chaining operator) - コードワールド

What does js.? mean? The role of .?, .? (optional chaining operator)

プログラミング 2023-08-01 20:02:35 訪問数: null

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転載: blog.csdn.net/guojixin12/article/details/131913714

What does js.? mean? The role of .?, .? (optional chaining operator)

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Uncaught SyntaxError: Unexpected token '.' ! ! ! Lower versions of node.js do not support the optional chaining operator

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