JavaScript Function Call Methods

In JavaScript, there are two ways to make a function call.

1. Directly calling a function: You can directly call a function by using the function name followed by parentheses. For example:

function hello() {
  console.log('Hello, world!');
}

hello(); // 调用hello函数

1. When a function is a method of an object, it can be called using the dot notation. For example:

var obj = {
  sayHello: function() {
    console.log('Hello, world!');
  }
};

obj.sayHello(); // 调用obj对象的sayHello方法