【el-cascader 多级多选限制条数】

<el-cascaderref="cascaderJob"v-if="categoryjobOptions.length > 0"class="el_input_widht"v-model="categoryjobValue"placeholder="职位分类":options="categoryjobOptions":props="{multiple: true, checkStrictly: true}":show-all-levels="true"@change="categoryjobChange"
></el-cascader>

categoryjobChange(val){
if(val.length>2){this.categoryjobOptions = this.DisabledForStatus(this.categoryjobOptions,1)this.categoryjobOptions.forEach(element => {val.forEach(item => {if(item.length==1){if(item[0] == element.value){element.disabled = false;}}else if(item.length==2){element.children.forEach(it => {if(it.value==item[1]){it.disabled = false;}});}else if(item.length==3){element.children.forEach(it => {if(it.value==item[1]){it.children.forEach(t => {if(t.value==item[2]){t.disabled = false;}});}});}});});}else{this.categoryjobOptions = this.DisabledForStatus(this.categoryjobOptions,2)}
},DisabledForStatus(arr,type) {let newArr = JSON.parse(JSON.stringify(arr));newArr.forEach((item) => {if(type==1){item.disabled = true;}else{item.disabled = false;}// 有无children项if (item.children && item.children.length !== 0) {let newChildren = [];newChildren = this.addDisabledForStatus(item.children,type);item.children = newChildren;}});return newArr;},