【VUE】VUE中ref的用法总结

基本用法，本页面获取dom元素

<template>
  <div id="app">
    <div ref="testDom">11111</div>
    <button @click="getTest">获取test节点</button>
  </div>
</template>
<script>
export default {
  methods: {
    getTest() {
      console.log(this.$refs.testDom)
    }
  }
};
</script>

this.$refs.testDom.style.color = "blue"

调用子组件中的data

<template>
  <div>
      {{ msg }}
  </div>
</template>
<script>
export default {
  data() {
    return {
      msg: "hello world"
    }
  }
}
</script>
父组件：
<template>
  <div id="app">
    <HelloWorld ref="hello"/>
    <button @click="getHello">获取helloworld组件中的值</button>
  </div>
</template>
<script>
import HelloWorld from "./components/HelloWorld.vue";
export default {
  components: {
    HelloWorld
  },
  data() {
    return {}
  },
  methods: {
    getHello() {
      console.log(this.$refs.hello.msg)
    }
  }
};
</script>

调用子组件中的方法

<!--子组件：-->
<template>
  <div>
  </div>
</template>
<script>
export default {
  methods: {
    open() {
      console.log("调用到了")
    }
  }
}
</script>
<!--父组件：-->
<template>
  <div id="app">
    <HelloWorld ref="hello"/>
    <button @click="getHello">获取helloworld组件中的值</button>
  </div>
</template>
<script>
import HelloWorld from "./components/HelloWorld.vue";
export default {
  components: {
    HelloWorld
  },
  data() {
    return {}
  },
  methods: {
    getHello() {
      this.$refs.hello.open();
    }
  }
};
</script>