How JavaScript simplifies switch

This article mainly introduces how JavaScript simplifies switch, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

Simplified switch

This technique is also very common, converting switch to the key-value form of the object, the code is much simpler:

// Longhand switch (data) { case 1: test1(); break; case 2: test2(); break; case 3: test(); break; // And so on... } // Shorthand var data = { 1: test1, 2: test2, 3: test }; data[anything] && data[anything](); What are the characteristics of JavaScript? 1. js is an interpreted scripting language;2. js can run on multiple platforms with cross-platform features supported by most browsers;3. js is a weakly typed scripting language that does not have strict requirements for the data types used, and can perform type conversion, which is simple and easy to use; 4, JS language security is high, only through the browser to achieve information browsing or dynamic interaction, thus effectively preventing the loss of data;5, object-based scripting language, JS can not only create objects, but also use existing objects.

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