console 命令行工具 X clear
console
<!DOCTYPE html>
<html lang="en" dir="ltr">

<head>
  <meta charset="utf-8">
  <title></title>
</head>

<body>
  <div id="app">
    <input type="text" v-model="name">
    <br> 姓名：{{name}}
  </div>
</body>
<script>
  let el = document.getElementById('app');
  let template = el.innerHTML;
  let _data = {
    name: 'HearLing'
  };

  let data = new Proxy(_data, {
    set(obj, name, value) {
      obj[name] = value;
      render();
    }
  });

  render();

  function render() {
    el.innerHTML = template.replace(/\{\{\w+\}\}/g, str => {
      str = str.substring(2, str.length - 2);
      return _data[str];
    });

    Array.from(el.getElementsByTagName('input'))
     .filter(ele => ele.getAttribute('v-model'))
     .forEach(input => {
       let name = input.getAttribute('v-model');
       input.value = _data[name];

       input.oninput = function () {
         data[name] = this.value;
       };
    });
  }
</script>

</html>