isString() function
This API is provided as a preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
函数isString 检查给定值是否是字符串。
Signature:
typescript
declare function isString(value: any): boolean;declare function isString(value: any): boolean;Parameters
| Parameter | Type | Description |
|---|---|---|
| value | any | 参数“value”的类型为“any”，这意味着它可以接受任何数据类型。 |
Returns:
boolean
{boolean} - 一个布尔值。
Example
JavaScript
let str = 'Hello'; isString(str) // true
let num = 123; isString(num) // false let str = 'Hello'; isString(str) // true
let num = 123; isString(num) // false