在对象javascript上调用方法

Question

const info = {
  name: 'Steve',
  phone: 20655564,
  email: 'SJ@yahoo.com',
  sayName: function(){
    console.log('Hello I am ' + info.name);
  },
};

我创建了一个随机对象，并使用其他函数来调用该对象方法。

function invokeMethod(object, method) {
  // method is a string that contains the name of a method on the object
  // invoke this method
  // nothing needs to be returned
  const func = object[method]
  object.func();

}

invokeMethod(info, 'sayName');

但是，当我运行上面的invokeMethod函数时，出现错误func不是函数。 但是，当我跑步时

return func

作为测试我得到[function]

试图弄清楚如何使它执行sayName方法

Answer 1

line object.func();处有错误object.func();

应该是func.call(object); 而不是object.func(); 或者您应该直接将其称为object[method]()

 const info = { name: 'Steve', phone: 20655564, email: 'SJ@yahoo.com', sayName: function(){ console.log('Hello I am ' + info.name); }, }; function invokeMethod(object, method) { // method is a string that contains the name of a method on the object // invoke this method // nothing needs to be returned const func = object[method] func.call(object); } invokeMethod(info, 'sayName');