Vue2.0父子组件传递函数的教程详解

<template>
 <div>
  <ok-input :params='number' :callback='callbackNum'></ok-input>
 </div>
</template>
<script type="text/ecmascript-6">
 import okInput from '../ok-input/okinput.vue';
 export default {
  props: {},
  data() {
   return {
    number: {},
    callbackNum: function (x) {
     console.log(x);
    }
   };
  },
  methods: {
  },
  components: {
   'ok-input': okInput
  }
 };
</script>

<template>
 <div>
   <input v-model='numVal' @change='handleFun'></input>
 </div>
</template>
<script type="text/ecmascript-6">
 import {Input, Select, Option, Button} from 'element-ui';
 import 'element-ui/lib/theme-default/index.css';
 export default {
  props: {
   params: {
    type: Object,
    default: {
     type: ''
    }
   },
   callback: {}
  },
  data() {
   return {
    x: 'hah',  
    numVal: ''
   };
  },
  methods: {
   handleFun(val) {
     this.callback(val); // 将参数传回父组件中的回调函数
   }
  },
  components: {
   'el-input': Input,
  }
 };
</script>

// 父组件.vue
<template>
 <div>
  <ok-input :params='inputs' @change='handleAge'></ok-input>
 </div>
</template>
<script type="text/ecmascript-6">
 import okInput from '../ok-input/okinput.vue';
 export default {
  props: {},
  data() {
   return {
    number: {}
   };
  },
  methods: {
   handleAge(evt) {
    console.log(evt.target.value); // 接收从子组件传过来的当前对象
   }
  },
  components: {
   'ok-input': okInput
  }
 };
</script>

<template>
 <div>
   <input v-model='numVal' @blur='handleChange'></input>
 </div>
</template>
<script type="text/ecmascript-6">
 import {Input, Select, Option, Button} from 'element-ui';
 import 'element-ui/lib/theme-default/index.css';
 export default {
  props: {
   params: {
    type: Object,
    default: {
     type: ''
    }
   },
   callback: {}
  },
  data() {
   return {
    x: 'hah',  
    numVal: ''
   };
  },
  methods: {
   handleChange(evt) {
    this.$emit('change', evt); // 将当前对象 evt 传递到父组件
   },
  },
  components: {
   'el-input': Input,
  }
 };
</script>