做网站需要租服务器吗,wordpress主题如何使用,国际电子商务网站建设,免费做网站哪家好由于es6支持哈希#xff0c;所以数据量只要不太大#xff0c;就不需要对el-cascader进行点击后在调接口出现下一级#xff0c;很简单的就是直接获取所有数据。
templatedivel-cascader :modelValuemodelValue :propsinnerProps所以数据量只要不太大就不需要对el-cascader进行点击后在调接口出现下一级很简单的就是直接获取所有数据。
templatedivel-cascader :modelValuemodelValue :propsinnerProps :optionsoptions changehandleChange filterable:show-all-levelsshowAllLevels :disableddisabled :placeholderplaceholder :clearableclearablestylewidth:100% bluronBlur focusonFocus closehandleClose visible-changeonVisibleChange /!-- --- {{ modelValue }} --/div
/templatescript langts setup
import { ref, reactive, toRaw, onMounted, watch, onBeforeUnmount } from vue
import type { CascaderProps } from element-plus
import * as api from ./api.js;const props defineProps({modelValue: {type: Array,default: []},// 是否支持清空选项clearable: {type: Boolean,default: true,},// 是否多选// multiple: {// type: Boolean,// default: false,// },// 指定某省传入该自治区的areacodedesignation: {type: String,default: ,},// 仅显示最后一级showAllLevels: {type: Boolean,default: true,},// 是否禁用disabled: {type: Boolean,default: false,},// 输入框占位文本placeholder: {type: String,default: ,},// 是否选择任意一级选项还是最后叶子结点checkStrictly: {type: Boolean,default: true,},// 次级菜单的展开方式,click和hoverexpandTrigger: {type: String,default: click,},// 多选个数限制selectNummultipleSelectNum: {type: Number,default: 1,},// 省市县乡镇显示层级默认为2到区县。0为省1为市2为区县3为乡镇level: {type: Number,default: 2,},
})let options: any ref([]) //树
const watchArr ref([])onMounted(() {// 获取全量数据getAllData()
})//重新定义一个值来接受prop
const isMultiple ref(false)//因为prop中的值非动态响应所以需要通过watch监听immediate 初始化时接收父组件中的传值
watch(() props.multipleSelectNum, () {// isMultiple.value props.multipleSelectNum;if(props.multipleSelectNum 1) {isMultiple.value true}console.log(isMultiple.value,props.multipleSelectNum,---props.multipleSelectNum;);}, {immediate: true
})onBeforeUnmount(() {})const emit defineEmits([update:modelValue, change])
const handleChange (e: any, e2: any) {watchArr.value eemit(change, e)emit(update:modelValue, e)
}async function getAllData() {let res await api.SearchAdministrativeDivisions({queryArea: props.designation,level: props.level})options.value res.data
}function onFocus(e: any) { }
async function onBeforeFilter(e: any) {let res await api.SearchAdministrativeDivisions({queryArea: e})const fn (arr: any[]) {arr.forEach((item, index) {if (item.children item.children.length) {item.children fn(item.children)} else {if (item.children) delete item.children}})return arr}// console.log(options, ---options);options.value fn(res.data)
}
// const isMultiple ref(false)
const innerProps: CascaderProps {checkStrictly: props.checkStrictly,// lazy: true,value: areaCode,label: name,multiple: isMultiple.value, //modifyexpandTrigger: props.expandTrigger,
}
const handleClose () { }
const onBlur () {// console.log(---onBlur);
}
const onVisibleChange (e: any) {// if (props.modelValue.length props.multipleSelectNum props.multiple true) {if (props.modelValue.length props.multipleSelectNum isMultiple.value true) { //modifyfunction onRabbit(list: any) {list.forEach((el: any) {if (el.children el.children.length 0) {el.children onRabbit(el.children);}el.disabled false;el.isFlag false});return list;}const newList onRabbit(options.value);options.value newList;}
}
// 监听
watch(() watchArr.value,(newVal, oldVal) {// if (props.multiple true) {if (isMultiple.value true) { //modify// console.log(oldVal,watch监听变化前的数)// console.log(newVal, watch监听变化后的数据)if (newVal.length props.multipleSelectNum) {function onRabbit(list: any) {list.forEach((el: any) {if (el.children el.children.length 0) {el.children onRabbit(el.children);}newVal.forEach((v: any) {if (v[v.length - 1] ! el.areaCode) {if (el.isFlag) {} else {el.disabled trueel.isFlag true}} else {el.disabled falseel.isFlag true}})});return list;}const newList onRabbit(options.value);options.value newList;} else {function onRabbit(list: any) {list.forEach((el: any) {if (el.children el.children.length 0) {el.children onRabbit(el.children);}el.disabled false;el.isFlag false});return list;}const newList onRabbit(options.value);options.value newList;}}},{immediate: true, // 立即执行deep: true // 深度监听}
)
/scriptstyle/style
