25 lines
770 B
Markdown
25 lines
770 B
Markdown
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---
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title: Some Function
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localeTitle: 一些功能
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---
## 一些功能
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`some()`函数用于验证数组中是否至少有一个元素满足给定条件。如果条件由一个元素满足，则该函数返回`true`如果任何元素满足条件，则返回false
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某些函数的原始语法是：
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```javascript
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arr.some(function callback(currentValue, index, array) {
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// Do some stuff with currentValue (index and array are optionals)
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}, [thisArg]);
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```
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### 示例（ES6）：
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```javascript
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const arr = [1, 4, 5, 11];
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if (arr.some(el => el % 2 == 0)) {
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console.log("There's at least one even number");
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}
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```
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`some()`是`Array`对象的一个方法，因此要将该函数传递给一个可迭代对象，必须确保该对象是一个Array。
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