js项目中双向数据绑定的简单实现方法

  <ul>  

     <li class="block-phone fix bd-bottom">  

          <label for="J_verificationPhone" data-bind-phone="tishi"><span>手机号</span></label>  

          <input  class="fix1" id="J_verificationPhone" data-bind-phone="name" name="phone"  type="text" />  

          <button class="right J_clickTime"  type="button">

            <span class="award-messages-btn2 J_messagesBtn1">获取验证码</span>

            <span class="award-messages-btn2 J_messagesBtn2 none"><i>60</i>s后重发</span>

          </button>

     </li>  

     <li class="block-verification fix">  

          <label for="J_verificationCode"><span>验证码</span></label>  

          <input class="fix1" data-bind-code="tishi" id="J_verificationCode" data-bind-phone="name" name="verification-code" class="" type="" />  

     </li> 

  </ul>  

/**
 * function verficationCallback 回调方法
 * [$btn1 description]
 * data-bind-phone="name"
 * @ message {[type]}   发生变化的字段phone
 * @ prop_name {[type]}  字段的value  name
 * @ target {[type]}      目标jsdom对象;
 * @ targetValue {[type]}  目标jsdom对象的value
 */// 监听回调函数，函数会拿到targetvalue 的值， target js dom对象，便于对变化的字段进行操作！！！
var User= require('../../entry/module/twoWayAudio.js');
var phone = new User('phone',verficationCallback);
 function verficationCallback(message,prop_name,target,targetValue){
}

function DataBinder(object_id,verficationCallback){  
// 创建一个简单的pubSub对象
var pubSub = {
callbacks: {},
on: function(msg,callback) {
this.callbacks[msg] = this.callbacks[msg] || [];
this.callbacks[msg].push(callback);
},
publish: function(msg) {
\

this.callbacks[msg] = this.callbacks[msg] || [];
for (var i = 0,len = this.callbacks[msg].length; i < len; i++) {
this.callbacks[msg][i].apply(this,arguments);
};
}
},

data_attr = "data-bind-" + object_id,
message   = object_id + ":change",
changeHandler = function(event) {
var target = event.target || event.srcElement, // IE8兼容
prop_name = target.getAttribute(data_attr);
if (prop_name && prop_name !== "") {
if(verficationCallback){
var targetValue = target.value;
verficationCallback (message,prop_name,target,targetValue);
}
pubSub.publish(message,prop_name,target.value);
}
};

// 监听事件变化，并代理到pubSub
if (document.addEventListener) {
document.addEventListener("keyup",changeHandler,false);
} else{
// IE8使用attachEvent而不是addEventListenter
document.attachEvent("onkeyup",changeHandler);
};

// pubSub将变化传播到所有绑定元素
pubSub.on(message,function(event,prop_name,new_val){
var elements = document.querySelectorAll("[" + data_attr + "=" +prop_name + "]"),
tag_name;
for (var i = 0,len = elements.length; i < len; i++) {
tag_name = elements[i].tagName.toLowerCase();
if (tag_name === "input" || tag_name === "textarea" || tag_name === "select") {
elements[i].value = new_val;

} else{
elements[i].innerHTML = new_val;
};
};
})
return pubSub;
}

function User(uid,verficationCallback) {  
var binder = new DataBinder(uid,verficationCallback),
  user   = {
  attribute : {},
  // 属性设置器使用数据绑定器pubSub来发布
  set : function(attr_name,val) {
  this.attribute[attr_name] = val;
  binder.publish(uid + ":change",attr_name,val,this);
  },
  get : function(attr_name) {
  return this.attribute[attr_name];
  },
  _binder : binder
  };

binder.on(uid + ":change",function(event,attr_name,new_val,initiator) {
if (initiator !== user) {
user.set(attr_name,new_val);
}
});
return user;
}
module.exports = User;
// phone.set( "name", "lwl" );  
// phone.set( "tishi", "提示" );  

 $('.block-phone #phone')[0].oninput=function(){
 console.log($(this))
}