简书链接:vue组合式和选项的简单套路模板转换等笔记
文章字数：111,阅读全文大约需要1分钟
默写，默写很重要，看10编不如默写一遍

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<scirpt>
export default {

mounted(){
},
data(){
return {
    a:[],
b:{},
c:"a"

}
},methods:[
a(){
this.c=this.c+"aa";
console.log(this.c);
}

]
</script>

组合式

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<script setup>
import {ref } from 'vue'
const a=ref([]]
const b=ref({})
const c=ref("a")
function a(){
c.value=c.value+"aa";
}
</script>

一些 bind 笔记本

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<script>
  import {ref,onMounted } from 'vue'

      const  x=ref("xxx")     
      const options1=ref([])
    const  selects=ref([])
const checks=ref([])

      const options=ref([
        {
          "title":"你好",
          "value":"a"
          
        },  {
          "title":"你好1",
          "value":"b"
          
        },  {
          "title":"你好2",
          "value":"c"
          
        }
        
      ])
onMounted(()=>{})

</script>
<template>
  <input v-model="x"/>
  {{x}}
  <p>
  current check:  {{checks}}
      current options:  {{options}}
          current options1:  {{options1}}
    {{selects}}
  </p>
  <input type="checkbox" id="a" value="a1" v-model="checks"/>
    <select v-model="options1">
    <option disabled dvalue="">please choose</option>
    <option>a</option>
      <option>b</option>
      <option>c</option>
  </select>
  <select v-model="selects">
    <option disabled value="">please choose default</option>
 	<option v-for="option in options" :value="option.value">
    {{option.value}}</option>
  </select>
</template>










更多对比
组合式

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<script setup >
  import {ref,onMounted} from 'vue'
  onMounted(()=> {
    pElementRef.value.textContent = 'moun11111ted!'
  })
 const a=ref("define a")
 const pElementRef=ref(null)
    

</script>

<template>
  {{a}}
  <p ref="pElementRef">hello</p>
</template>



选项式

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<script>
export default {
  mounted() {
    this.$refs.pElementRef.textContent = 'mounted!'
  },data(){
    return {
      a:"xx"
    }
  }
  
  
  
}
</script>

<template>
  {{a}}
  <p ref="pElementRef">hello</p>
</template>

引用其他组件
这一次 组件式要少写一些代码

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import ChildComp from './ChildComp.vue'

export default {
  components: {
    ChildComp
  }
}
<template>
  <ChildComp />
</template>
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<script setup>
import ChildComp from './ChildComp.vue'
</script>

<template>
  <ChildComp />
</template>

props

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<!-- ChildComp.vue -->
<script setup>
const props = defineProps({
  msg: String
})
</script>
<ChildComp :msg="greeting" />
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// 在子组件中
export default {
  props: {
    msg: String
  }
}
<ChildComp :msg="greeting" />

emit

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<script>
import ChildComp from './ChildComp.vue'

export default {
  components: {
    ChildComp
  },
  data() {
    return {
      childMsg: 'No child msg yet'
    }
  }
}
</script>

<template>
  <ChildComp @response="(msg) => childMsg = msg" />
  <p>{{ childMsg }}</p>
</template>

child
<script>
export default {
  emits: ['response'],
  created() {
    this.$emit('response', 'hello from child')
  }
}
</script>

<template>
  <h2>Child component</h2>
</template>
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<script setup>
import { ref } from 'vue'
import ChildComp from './ChildComp.vue'

const childMsg = ref('No child msg yet')
</script>

<template>
  <ChildComp @response="(msg) => childMsg = msg" />
  <p>{{ childMsg }}</p>
</template>
child

<script setup>
const emit = defineEmits(['response'])

emit('response', 'hello from child')
</script>

<template>
  <h2>Child component</h2>
</template>