三七互娱笔试

一道关于链式调用的题目

// 使用构造函数的形式
function Hero(name) {
  this.name = name;
  console.log(name);
  return this;
}

Hero.prototype.kill = function () {
  console.log('kill');
  return this
}

Hero.prototype.sleep = function (time) {
  var start = new Date().getTime();
  console.log('Timeout');
  while((start + time * 1000) > new Date().getTime()) {

  }
  return this;
}

// 创建一个实例
var hero = function(name) { 
  return new Hero(name);
}
console.log(hero('Gping'));
hero("37er").kill(2).sleep(5).kill(1);

// 使用对象的形式
var Hero = function(text) {
    console.log('Hello ' + text)
    var obj = {
        kill: function(num) {
        if (num == 1) {
          console.log('kill');
        } else {
          console.log('kills');
        }
                return this;
    },
    sleep: function(time) {
      var start = new Date().getTime();
            console.log('timeOut');
            while((start + time*1000) > new Date().getTime()) {
        
            }
            return this;
    },
    recover: function(num) {
            console.log('recover ' + num);
            return this;
        }
    }
  return obj;
}