Vue常用指令V-model用法

时间:2020-05-15 阁下长的好生俊俏人气:0

v-model这个指令只能用在<input>, <select>,<textarea>这些表单元素上，所谓双向绑定，指的就是我们在js中的vue实例中的data与其渲染的dom元素上的内容保持一致，两者无论谁被改变，另一方也会相应的更新为相同的数据。

<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8">
 <title></title>
 <script src="../js/Vue.js" charset="utf-8"></script>
 <script type="text/javascript">
  window.onload = function(){
  var vm = new Vue({
    el:'#box',
    data:{
     msg:'welcome vue'
    }
  });
  }
 </script>
 </head>
 <body>
 <div id="box">
  <input type="text" v-model='msg'/>
  <br />
  {{msg}}
 </div>
 </body>
</html>

<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8">
 <title></title>
 <script src="../js/Vue.js" charset="utf-8"></script>
 <script type="text/javascript">
  window.onload = function(){
  var vm = new Vue({
    el:'#box',
    data:{
     msg:'welcome vue'
    }
  });
  }
 </script>
 </head>
 <body>
 <div id="box">
  <input type="text" v-model='msg'/>
  <br />
  {{msg}}
 </div>
 </body>
</html>

<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8">
 <title></title>
 <script src="../js/Vue.js" charset="utf-8"></script>
 <script type="text/javascript">
  window.onload = function(){
  var vm = new Vue({
    el:'.box',
    data:{
     msg:'welcome vue'
    }
  });
  }
 </script>
 </head>
 <body>
 <div class="box">
  <input type="text" v-model='msg'/>
  <br />
  <input type="text" v-model='msg'/>
  <br />
  {{msg}}
 </div>
 </body>
</html>

<!DOCTYPE html>
<html>
 <head>
 <meta charset="utf-8">
 <title></title>
 <script src="../js/Vue.js" charset="utf-8"></script>
 <script type="text/javascript">
  window.onload = function(){
  var vm = new Vue({
    el:'.box',
    data:{
     msg:'welcome vue',
     msg2:12,
     msg3:true,
     arr:['app','orange','pare']
    }
  });
  }
 </script>
 </head>
 <body>
 <div class="box">
  <input type="text" v-model='msg'/>
  <br />
  <input type="text" v-model='msg'/>
  <br />
  {{msg}}
  <br />
  {{msg2}}
  <br />
  {{msg3}}
  <br />
  {{arr}}
 </div>
 </body>
</html>

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