vue2中ref获取dom：
<div class="hello" ref="gantt">
111111
</div>
mounted() {
console.log(this.$refs.gantt)
}
vue3中setup函数中this指向undefined，所以需要引入 ref 。
vue3中ref获取单个dom：
<template>
<div class="plusgantt" id='plusgantt' ref='plusgantt'>
<div>1312</div>
</div>
</template>
<script>
import {
onMounted, ref } from "vue";
export default {
setup() {
const plusgantt = ref(null);
onMounted(() => {
console.log(plusgantt.value)
});
return {
plusgantt,
};
}
};
</script>
vue3中也可以获取多个dom
vue3中ref获取多个dom：
<template>
<div class="plusgantt" ref='plusgantt'>
<ul>
<li v-for="(item,index) in data" :key="index" ref='liList'>{
{
item.name }}</li>
</ul>
</div>
</template>
<script>
import {
reactive, toRefs, onMounted, ref } from "vue";
export default {
setup() {
const vueConfig = reactive({
data: [
{
id: 1, name: 'list1' },
{
id: 2, name: 'list2'},
{
id: 3, name: 'list3'},
{
id: 4, name: 'list4'}
]
})
const liList = ref([]);// 存储dom列表
onMounted(() => {
console.log(liList.value)
});
return {
...toRefs(vueConfig),
liList
};
}
};
</script>
也可以动态绑定一个方法，方法参数就是每一个li，可以push进liList 数组中。
<template>
<div class="plusgantt" ref='plusgantt'>
<ul>
<li v-for="(item,index) in data" :key="index" :ref='mutiRef'>{
{
item.name }}</li>
</ul>
</div>
</template>
<script>
import {
reactive, toRefs, onMounted, ref } from "vue";
export default {
setup() {
const vueConfig = reactive({
data: [
{
id: 1, name: 'list1' },
{
id: 2, name: 'list2'},
{
id: 3, name: 'list3'},
{
id: 4, name: 'list4'}
]
})
const liList = ref([]); // 存储dom列表
let mutiRef = (el)=> {
liList.value.push(el)
}
onMounted(() => {
console.log(liList.value)
});
return {
...toRefs(vueConfig),
mutiRef
};
}
};
</script>
