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This article mainly introduces how Vue uses objects instead of if and switch, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Use objects instead of if and switch

In many cases, we often encounter scenarios where circular judgment performs assignment operations. Generally, we use the conditional judgment of if and switch. If it meets the requirement, the assignment is performed, and if it does not match, proceed to the next judgment, such as:

Let name = 'lisi';let age = 18 else if if (name =' zhangsan') {age = 21;} else if (name = 'lisi') {age = 18;} else if (name =' wangwu') {age = 12;} / or switch (name) {case 'zhangsan': age = 21; break case' lisi': age = 18; break case 'wangwu': age = 12; break}

This way of writing is not only redundant, but also inefficient in code execution, so we can abbreviate it in the form of objects:

Let name = 'lisi';let obj = {zhangsan: 21, lisi: 18, wangwu: 12}; let age = obj [name] | | 18

The above technique is suitable for circular judgment of an assignment, and methods such as if or switch are needed if there is more processing logic after the judgment.

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