JavaScript常见的函数中的属性与方法总结

function exampleFunc(a, b) {
  console.log(arguments[0]); // 访问第一个参数
  console.log(arguments.length); // 参数的个数
}

exampleFunc(1, 2, 3); // 1，3

function exampleFunc(a, b, c) {
  // 函数体
}

console.log(exampleFunc.length); // 3

function namedFunction() {
  // 函数体
}

const anonymousFunction = function() {
  // 函数体
}

console.log(namedFunction.name); // namedFunction
console.log(anonymousFunction.name); // anonymousFunction

function outerFunc() {
  innerFunc();
}

function innerFunc() {
  console.log(innerFunc.caller); // outerFunc
}

outerFunc();

function Person(name) {
  this.name = name;
}

Person.prototype.sayHello = function() {
  console.log("Hello, " + this.name);
};

const person = new Person("John");
person.sayHello(); // Hello, John

const obj = {
  name: "John",
  greet: function() {
    console.log("Hello, " + this.name);
  }
};

const boundFunc = obj.greet.bind(obj);
boundFunc(); // Hello, John

function Person(name) {
  this.name = name;
}

const person = new Person("John");

console.log(person.constructor); // 输出：Person