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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  
<div id="app">
  <button @click="plus">count:{{ count }}</button>
  <p>now (computed):{{ now }}</p>
  <p>getNow (method):{{ getNow() }}</p>
</div>
  
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.3/vue.js"></script>
  
</body>
</html>
 
var vm = new Vue({
  el: '#app',
  data: {
    count: 0
  },
  methods: {
    getNow: function() {
      console.log("getNow" + "--被觸發執行了")
      return Date.now();
    },
    plus() {
      console.log("plus" + "----被觸發執行了")
      this.count += 1;
    }
  },
  computed: {
    now: function() {
      console.log("now" + "-----被觸發執行了")
      return Date.now();
    }
  },
});
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anonymouspro
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