# \_.isFinite（是否是有限数值）

**语法：**

```javascript
_.isFinite(value)
```

**源代码链接：**[source](https://github.com/lodash/lodash/blob/4.17.10/lodash.js#L11625)

**npm包链接：**[npm package](https://www.npmjs.com/package/lodash.isfinite)

**描述：**

检查`value`是否是原始有限数值。

> \*\* 注意:\*\* 这个方法基于[`Number.isFinite`](https://mdn.io/Number/isFinite)。
>
> [JavaScript isFinite() 函数](http://www.w3school.com.cn/jsref/jsref_isFinite.asp)：isFinite() 函数用于检查其参数是否是无穷大。

**开始版本：**0.1.0

**参数：**

* `value (*)`: 要检查的值。

**返回值：**

* `(boolean)`: 如果 value 是一个有限数值，那么返回 true，否则返回 false。

**例子：**

```javascript
_.isFinite(3);
// => true

_.isFinite(Number.MIN_VALUE);
// => true

_.isFinite(Infinity);
// => false

_.isFinite('3');
// => false
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://lodash.shujuwajue.com/lang/isfinite.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.