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Today, the editor will share with you the relevant knowledge points about how to use Switch sentences in javascript. The content is detailed and the logic is clear. I believe most people still know too much about this, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

1. Rewrite multiple if statements using Swicth:

In general, we often use Switch... case statements, but we usually give them fixed values, so what if we rewrite multiple if statements in Switch? Let's look at the code:

Var a = 100 break; case a var b = NaN;switch (true) {case isNaN (a) | | isNaN (b): console.log ('NaNNaN'); break; case a = b: console.log (0); break; case a < b: console.log (- 1); break; default: console.log (1);}

We see in the code that there is a break in each interval to perform the pop-out method.

two。 Multiple case, single operation.

Besides carefully rewriting the operation in break, we can also use the individual operation code as follows:

Var Animal = 'Giraffe';switch (Animal) {case' Cow': case 'Giraffe': case' Dog': case 'Pig': console.log (' This animal will go on Noah\'s Ark.'); break; case 'Dinosaur': default: console.log (' This animal will not.');}

We complete the operation by calling one by one through case.

These are all the contents of the article "how to use switch sentences in javascript". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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