• 通过computed属性将所要监听的属性组合在一起
• 再通过watch监听建好的那个计算属性即可
• 示例代码如下

<script>
export default {
  data() {
    return {
    	str: "一个字符串",
    	num: 999
	}
  },
  computed: {
    multiFiled() {
      let {str, num} = this;
      return {str, num};
    }
  },
  watch: {
    multiFiled: function(val) {
      let {str, num} = val;
    },
  },
 }
 </script>