SOURCE

new Vue({
  el: "#app",
  data: {
    todos: [
      { text: "Learn JavaScript", done: false },
      { text: "Learn Vue", done: false },
      { text: "Play around in JSFiddle", done: true },
      { text: "Build something awesome", done: true }
    ]
  },
  methods: {
  	toggle: function(todo){
    	todo.done = !todo.done
    }
  }
})

 <el-input
    placeholder="请选择日期"
    v-model="input22">
    <i slot="suffix" class="el-input__icon el-icon-date"></i>
  </el-input>
  <el-input
    placeholder="请输入内容"
    v-model="input23">
    <i slot="prefix" class="el-input__icon el-icon-search"></i>
  </el-input>