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This article mainly shows you "JavaScript why avoid using with()", the content is simple and easy to understand, organized clearly, I hope to help you solve doubts, let Xiaobian lead you to study and learn "JavaScript why avoid using with()" this article bar.

Avoid using with()

Using with() inserts a global variable. Therefore, variables with the same name can cause unnecessary trouble by overwriting their values.

Javascript is a dynamically typed, weakly typed language, object-based and event-driven scripting language with relative security and widely used for client-side web development, and is also a scripting language widely used for client-side Web development. It was mainly used to add dynamic functionality to HTML pages, and now JavaScript can also be used for web servers such as Node.js.

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