@ egjs/ list- divers
QQ 模块, 在一个阵列中添加、 删除或更改值时检查 diff .
* 安装
$ npm i @egjs/list-differ
<script src="//naver.github.io/egjs-list-differ/release/latest/dist/list-differ.min.js"></script>
页:1
- 见 文档 页 次.
- 引入列表差异以跟踪数据和跟踪变化(单位:千美元)한국어(中文(简体) )
- 如何建立跨框架构成部分(单位:千美元)한국어(中文(简体) )
• 软件包
| 软件包 | 版本 | 说明 |
|---|---|---|
| @egjs/ 儿童差异 |  | 一个测试DOM孩子的模块. |
| @egjs/ react- children-differ (英语) |  |  反应 @egjs/ children-differ 的端口 |
| @egjs/ngx- 儿童- differ |  |  角质 @egjs/ children-differ 的端口 |
| @egjs/vue- children-differ (英语) |  |  Vue.js (英语) @egjs/ children-differ 的端口 |
如何使用
检查数组中的 diff
import ListDiffer, { diff } from "@egjs/list-differ";
// script => eg.ListDiffer
// Value is key
const differ = new ListDiffer([1, 2, 3, 4, 5, 6, 7], e => e);
// const result = diff([1, 2, 3, 4, 5, 6, 7], [4, 3, 6, 2, 1, 7], e => e);
const result = differ.update([4, 3, 6, 2, 1, 7]);
// List before update
// [1, 2, 3, 4, 5, 6, 7]
console.log(result.prevList);
// Updated list
// [4, 3, 6, 2, 1, 7]
console.log(result.list);
// Index array of values added to `list`
// [2]
console.log(result.added);
// Index array of values removed in `prevList`
// [5, 4]
console.log(result.removed);
// An array of index pairs of `prevList` and `list` with different indexes from `prevList` and `list`
// [[3, 0], [2, 1], [1, 3], [0, 4], [6, 5]]
console.log(result.changed);
// The subset of `changed` and an array of index pairs that moved data directly. Indicate an array of absolute index pairs of `ordered`.(Formatted by: Array<[index of prevList, index of list]>)
// [[3, 0], [2, 1], [1, 3]]
console.log(result.pureChanged);
// An array of index pairs to be `ordered` that can synchronize `list` before adding data. (Formatted by: Array<[prevIndex, nextIndex]>)
// [[3, 0], [3, 1], [3, 2]]
console.log(result.ordered);
// An array of index pairs of `prevList` and `list` that have not been added/removed so data is preserved
// [[3, 0], [2, 1], [1, 3], [0, 4], [6, 5]]
console.log(result.maintained);
改变了什么?
- 已更改: 一系列指数对
prevList财务报告和审定财务报表list不同指数prevList财务报告和审定财务报表list - 纯变形: 子集
changed和一系列直接移动数据的索引对。 表示绝对指数对的数组ordered.(由: Array < [prevList的索引,列表索引] 校正)
| 已更改 | 纯已改变 : | |
|---|---|---|
| [[3、0、[2、1]、[1、3]、[0、4]、[6、5]] | [[ [3, ], [2, 1], [1, 3]]]] | |
| 预览列表 |  |  |
| 进程 | - 说吧 |  |
| 列表 |  |  |
什么订单?
一系列索引配对 ordered 能够同步 list 在添加数据之前。 (原载:Array<[prevIndex,下Index])
| 删除 - > 命令 - > 添加 | |
|---|---|
| 预览列表 |  |
| 删除 [5、4] |  |
| 订购 | [[3, 0, [3, 1], [3, 2]]]] |
 | |
| 命令 [0] [3=>0] |  |
| 命令 [1] [3=> 1] |  |
| 命令 [2] [3=>2] |  |
| 已添加 [2] |  |
| 列表 |  |
数据同步示例
import ListDiffer, { diff } from "@egjs/list-differ";
const prevList = [1, 2, 3, 4, 5, 6, 7];
const list = [4, 3, 6, 2, 1, 7];
// const differ = new ListDiffer(prevList, e => e);
// const result = differ.update(list);
const result = diff(prevList, list, e => e);
删除qq命令 添加
| 删除qq命令 添加 | |
|---|---|
| 预览列表 | |
| 进程 | |
| 列表 | |
- 同步列表
const nextList = prevList.slice();
result.removed.forEach(index => {
nextList.splice(index, 1);
});
result.ordered.forEach(([from, to], i) => {
nextList.splice(from, 1);
nextList.splice(to, 0, list[result.pureChanged[i][1]]);
});
result.added.forEach(index => {
nextList.splice(index, 0, list[index]);
});
// `nextList` is the same as `list`.
console.log(nextList);
- 同步 DOM
const parentElement = document.querySelector(".parent");
const children = parentElement.children;
result.removed.forEach(index => {
children[index].remove();
});
result.ordered.forEach(([from, to]) => {
parentElement.insertBefore(children[from], children[from < to ? to + 1 : to]);
});
result.added.forEach(index => {
parentElement.insertBefore(document.createElement("div"), children[index]);
});
删除 qq 维护 qq 添加
| 已保留 +++ 添加 | |
|---|---|
| 预览列表 | |
| 进程 |  |
| 列表 | |
- 同步列表
const nextList: number[] = [];
result.removed.forEach(index => {
// There is a remove operation for the index.
// prevList[index];
});
result.maintained.forEach(([from, to]) => {
nextList[to] = list[to];
});
result.added.forEach(index => {
nextList[index] = list[index];
});
// `nextList` is the same as `list`.
console.log(nextList);
- 同步 DOM
const parentElement = document.querySelector(".parent");
const children = parentElement.children;
const prevChildren: Element[] = [].slice.call(parentElement.children);
result.removed.forEach(index => {
prevChildren[index].remove();
});
result.maintained.forEach(([from, to]) => {
parentElement.appendChild(prevChildren[from]);
});
result.added.forEach(index => {
parentElement.insertBefore(document.createElement("div"), children[index]);
});
捐款
见 捐款额。 。 。 .
* 反馈
请存档 问题。 。 。 .
许可证
@egjs/list-differ 在下方发布 麻省理工学院许可证。 。 。 .
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