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Today, the editor will share with you the relevant knowledge points about how to use symbol in js. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, 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. The symbol value represents a unique identifier, and you can use Symbol () to create this type of value.

2. Symbol guarantee is unique. Even if we create many Symbol with the same description, their values are different.

Example

Class MyPrime {static [Symbol.hasInstance] (obj) {let element = Number (obj) for (let start = 2; start < element; start++) {if (element% start = 0) {return false; break;}} return true }} console.log (5 instanceof MyPrime); / / true console.log (10 instanceof MyPrime); / / false above is all the content of the article "how to use symbol in js". 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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