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Editor to share with you what the javascript sandbox means. I hope you will get something after reading this article. Let's discuss it together.

Sandbox in javascript refers to a completely independent area, using its own independent properties and methods. The basic format of sandbox in js is "(function () {}) (...)"; sandbox mode is generally used to write third-party frameworks or write plug-ins for third-party frameworks or write some components with independent writing functions.

This article operating environment: windows7 system, javascript1.8.5 version, DELL G3 computer

The concept of sandbox in js

Sand box

The sandbox is a completely independent area of the js, using its own independent properties and methods.

The basic format of sandbox in js

(function () {}) ()

Self-calling function (execute function immediately)

Specification for the use of sandboxes

All variable definitions are written at the top

Put logic code in the middle

Finally, expose some members to the outside world if necessary (such as jQuery's such as window. For example, window.=window.jQuery=$)

The use of sandboxes

The sandbox model is generally used to write third-party frameworks.

Or write plug-ins for third-party frameworks

Or some components with independent writing function.

Advantages of sandbox model

1. The sandbox mode uses IIFE, which will not expose any global variables, so it will not cause global variable pollution.

two。 All the data in the sandbox is completely isolated from the outside world, and it cannot be modified by the outside world, which ensures the security of the code.

After reading this article, I believe you have a certain understanding of "what does javascript sandbox mean?" if you want to know more about it, you are welcome to follow the industry information channel. Thank you for your reading!

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