JS实用技巧

1. 使用闭包实现私有变量

function Person(name, age) {
  this.getName = function() { return name; };
  this.setName = function(newName) { name = newName; };
  this.getAge = function() { return age; };
  this.setAge = function(newAge) { age = newAge; };

  //未在构造函数中初始化的属性
  var occupation;
  this.getOccupation = function() { return occupation; };
  this.setOccupation = function(newOcc) { occupation =
    newOcc; };
}

1. 创建对象的构造函数

function Person(firstName, lastName) {
  this.firstName = firstName;
  this.lastName = lastName;
}

参考文章：45 Useful JavaScript Tips, Tricks and Best Practices