let obj = {

  name: 'scotch.io',

  exec: function exec() {

    return true;

  },

}

​

let method1 = Object.assign({}, obj);

let method2 = JSON.parse(JSON.stringify(obj));

​

console.log(method1); //Object.assign({}, obj)

/* result

{

  exec: function exec() {

    return true;

  },

  name: "scotch.io"

}

*/

​

console.log(method2); // JSON.parse(JSON.stringify(obj))

/* result

{

  name: "scotch.io"

}

*/

​

​