30秒学会 JavaScript 片段 – isObject

Returns a boolean determining if the passed value is an object or not.

Uses the Object constructor to create an object wrapper for the given value.
If the value is null or undefined, create and return an empty object. Οtherwise, return an object of a type that corresponds to the given value.

代码片段

const isObject = obj => obj === Object(obj);

使用样例

isObject([1, 2, 3, 4]); // true
isObject([]); // true
isObject(['Hello!']); // true
isObject({ a: 1 }); // true
isObject({}); // true
isObject(true); // false