js constructor typeOf difference

constructor property returns an array function to create this object references.

For example: const obj = {a: 1}

　       console.log(obj.constructor)   // function Object() { [native code] }

　       console.log(obj.constructor === Object)  true

　       console.log(obj.constructor === 'object')  false

　       console.log(typeof obj)           // object 

　       console.log(typeof obj === 'object')    true

　       console.log(typeof obj === Object)    false