## isSet + [link](./isSet "Link to this entry.") + [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L10269 "View in source.") + [npm](https://www.npmjs.com/package/lodash.isset "See the npm package.") ``` _.isSet(value) ``` 检查 `value` 是否是 `Set` 对象。 ### 参数 1. value (\*) 要检查的值 ### 返回值 (boolean) 如果是正确的类型，返回 `true`，否则返回 `false` ### 示例 ``` _.isSet(new Set); // => true _.isSet(new WeakSet); // => false ```