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This article mainly shows you "how to use the eval method in js", the content is easy to understand, clear, hope to help you solve your doubts, let the editor lead you to study and learn "how to use the eval method in js" this article.

1. Eval is one of the most powerful methods in js. It is like a complete ECMAScript parser that parses and evaluates strings according to ECMAScript statements.

2. All variable declarations and function declarations in eval will not be increased.

Example

/ / equivalent to directly calling alertvar msg = "hello world"; eval ("alert (msg)"); / / "hello world" / / equivalent to the function declaration eval ("function sayHi () {alert ('hi');}"); this is all the content of the article "how to use the eval method in js". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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