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1. 优化arr2tree
This commit is contained in:
ruanlinxin 2021-05-31 22:04:11 +08:00
parent f8fa44c94c
commit 12b7f0ce0e
1 changed files with 54 additions and 47 deletions
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101
src/index.js
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@ -1,16 +1,16 @@
import { name, version, website } from '../package.json'
import { selector, warn } from '@/common/util'
import Select from '@/components/xm-select'
import { name, version, website } from '../package.json'
import { selector, warn } from '@/common/util'
import Select from '@/components/xm-select'
export const datas = {};
export const optionData = {};
export const childData = {};
export default {
name,
export default {
name,
version,
doc: website,
render(options) {
render(options) {
let { el } = options;
options.dom = selector(el);
@ -23,50 +23,57 @@ export default {
optionData[el] = options;
let instance = new Select(options);
//已经渲染
//已经渲染
if (instance && instance.options.__render_success) {
datas[el] = instance;
}
return instance;
},
get(filter, single) {
let type = Object.prototype.toString.call(filter);
let method;
switch (type) {
case '[object String]':
filter && (method = item => item === filter);
break;
case '[object RegExp]':
method = item => filter.test(item);
break;
case '[object Function]':
method = filter;
break;
default:
break;
}
let keys = Object.keys(datas)
let list = (method ? keys.filter(method) : keys).map(key => datas[key]).filter(instance => selector(instance.options.el));
return single ? list[0] : list;
},
batch(filter, method) {
let args = [...arguments];
args.splice(0, 2);
return this.get(filter).map(instance => instance[method](...args));
}
return instance;
},
arr2tree(arr, pid, id, children, topParentId){
arr.forEach(item => {
if(item[pid] != topParentId){
let parent = arr.find(i => i[id] === item[pid])
if(parent){
if(!parent[children]){
parent[children] = [];
}
parent[children].push(item)
}
get(filter, single) {
let type = Object.prototype.toString.call(filter);
let method;
switch (type) {
case '[object String]':
filter && (method = item => item === filter);
break;
case '[object RegExp]':
method = item => filter.test(item);
break;
case '[object Function]':
method = filter;
break;
default:
break;
}
let keys = Object.keys(datas)
let list = (method ? keys.filter(method) : keys).map(key => datas[key]).filter(instance => selector(instance.options.el));
return single ? list[0] : list;
},
batch(filter, method) {
let args = [...arguments];
args.splice(0, 2);
return this.get(filter).map(instance => instance[method](...args));
},
arr2tree(arr=[], pid='pid', id='id', children='children', topParentId=0){
const datas = {} // 数据缓存
return safety(arr).filter(item =>{
const _id = item[id] // 提取自身id 必须唯一
const _pid = item[pid] // 提取父级id
const self = datas[_id] // 读取数据缓存中的数据
let parent = datas[_pid] // 读取父级数据
if(self){ // 如果缓存中有数据
item[children] = self[children] // 把缓存的数据保存到自身
}
datas[_id] = item // 替换缓存中的数据
if(!parent){ // 如果没有找到父级数据
parent = { // 创建一个全新的父级数据
[children]:[]
}
datas[_pid] = parent // 记录到缓存
}
parent.push(item) // 推送自身到父级
return id == topParentId // 这里用 == 防止出现 字符串不等于数字类型的情况
})
return arr.filter(i => i[pid] == topParentId)
}
}
}