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Today, the editor will share with you the relevant knowledge points about how to use the js some method. 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.

Concept

1. For each element in the array, but this method is that as long as the comparison result of one element is true, the return result is true, on the contrary, the comparison result of all elements is false.

2. Some executes the callback function for each element in the array until you find a value that makes callback return a "true value" (that is, a value that can be converted to a Boolean true).

Grammar

Arr.some (fn [, thisArg])

Attention to use

Some () does not detect empty arrays.

Some () does not change the original array.

Example

Var arr = [1Jing 2Jing 3Jing 4Jing 5] var result = arr.some (function (item,index) {return item > 3}) the above is all the content of this article "how to use the js some method". 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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