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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

  The info below will change in <span id='timer'>5</span> seconds</h2>
<div id="input-area">
<!-- View层 end -->
              table {
  border: 1px solid #ddd;
  border-collapse: collapse;
td, th {
  border: 1px solid #ddd;
ul, li {
  list-style: none;
.school {
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #ddd;
.school--yellow {
  border: 1px solid dark-yellow;
  color: #fff;
  background-color: yellow;
              // --- View层 请看Html代码段
// --------- Model层 ----------
var newPerson = {
  myInput: "dfdf"

// --------- viewModel层 ----------
// console.log(window)
var snabbdom = window.snabbdom; //定义patch函数 实现dom节点更新的核心方法
var patch = snabbdom.init([
var h = window.h; // 定义h函数
var toVNode = window.tovnode.default; // 定义toVNode函数
var oldVNode = null,
  newVNode = null;
function bindInputModel() {
  var inputEl = document.querySelector("#my-input");
  if (inputEl && inputEl.value !== undefined) {
    inputEl.oninput = function(e) {
      if (e.target.value !== newPerson.myInput) {
        newPerson.myInput = e.target.value;
function updateInputArea(newVal, oldVal) {
  var el = document.querySelector("#input-area");
  // 传统的拼接html字符串的方式实现更新视图View
  var compiled = _.template(
    '<input type="text" class="form-control" data-hotkey="xxxhotkey" name="search" value="${ myInput }" placeholder="Search or jump to…" id="my-input" /><span>The value of the input is <b id="my-input__val">${ myInput }</b></span>'
  var inputEl = el.querySelector("#my-input");
  if (!inputEl) {
    el.innerHTML = compiled({ myInput: newVal });
    oldVNode = toVNode(el);
  } else { // 关键的实现双向绑定代码如下
    var newNode = el.cloneNode(false)
    newNode.innerHTML = compiled({ myInput: newVal });
    newVNode = toVNode(newNode)
    patch(oldVNode, newVNode)
    oldVNode = newVNode
Object.defineProperty(newPerson, "myInput", {
  set: function(x) {
    if (x !== this.oldPropValue) {
      updateInputArea(x, this.oldPropValue);
      this.oldPropValue = x;
    } else {
  get: function() {
    console.log("in property get accessor");
    return this.oldPropValue;
  enumerable: true,
  configurable: true

// --------- mvvm 数据驱动开发方式,现在只需修改newPerson的数据,View层的Dom节点会自动更新,如下:
setTimeout(function() {
  newPerson.myInput = "新的值";
}, 5000);

// 下面只是计时器,与上面无关,set the timer
Object.prototype.delay = function(time, doSomething) {
  var self = this,
    startTime = time;
  if (self) {
    setTimeout(function() {
      doSomething(self, startTime);
    }, time);
  return this;
var el = document.querySelector("#timer");
for (var i = 0; i <= 5; i++) {
  el.delay(i * 1000, function(self, startTime) {
    self.innerHTML = 5 - startTime / 1000;

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