Cascade

The methods of building cascade select elements, including the method related with data processing.

Introduce

This is a tool for producing a form part comprised of a series of "select" elements. The data of them are cascaded, so there is also a method to convert common data to the data with specified structure.

Installation

npm install "@ftchinese/cascade" --save

Import

import cascade from "@ftchinese/cascade";

API

cascade.dealData(inputData, fieldArr)

Convert common data to data with specified structure.

Usage Example

const dealData = cascade.dealData;
const myDealedData = dealData(myRawData,["province","city","shop","phone"]);

param

• @param inputData: TYPE Array, it shoud be specfied structure like the Eg Data1:

  [
  {"province":"安徽","city":"蚌埠","shop":"蚌埠分公司"},
  {"province":"安徽","city":"阜阳","shop":"阜阳分公司"},
  {"province":"安徽","city":"合肥","shop":"合肥分公司1"},
  {"province":"安徽","city":"合肥","shop":"合肥分公司2"},
  {"province":"江苏","city":"苏州","shop":"苏州分公司"},
  {"province":"江苏","city":"常州","shop":"常州分公司1"},
  {"province":"江苏","city":"常州","shop":"常州分公司2"},
  {"province":"江苏","city":"常州","shop":"常州分公司3"},
  {"province":"江苏","city":"淮安","shop":"淮安分公司1"},
  {"province":"江苏","city":"淮安","shop":"淮安分公司2"}
  ]

• @param keyArray:Type Array, each item is a string. The func will process data following the order of this array.Here，it can be:["provice","city","shop"]

more detail

1. How to get the input data in correct structure?

It is simple to get your input data(as structure of Eg Data1).

Usually, our raw data is excel data, like:

province | city | shop ---------|------|----- 安徽|蚌埠|蚌埠分公司 安徽|阜阳|阜阳分公司 安徽|合肥|合肥分公司 安徽|合肥|合肥分公司 江苏|苏州|苏州分公司 江苏|常州|常州分公司1 江苏|常州|常州分公司2 江苏|常州|常州分公司3

There are a lot of tools of translating this excel data to Eg Data1, such as http://www.bejson.com/json/col2json/. What you need to do is just copying the excel data, pasting it in the page, and clicking the convert button. Then you can get the data like Eg Data1.

2. It can only process the data with 3 fields?

No. You can have any number of fields as many as you like.

new cascade.Cascade(myDealeddata,selectElArr)

Loading the structured data to the select elements. Then the select elements can be cascaded.

Usage Example

const Cascade = cascade.Cascade;
const dealData = cascade.dealData;

const myDealedData = dealData(myRawData,["province","city","shop","phone"]);
const mySelectElems = ["province","city","shop","phone"];
const myCascade = new Cascade(myDealedData, mySelectElems);

param

• @param myDealeddata: TYPE Array, the data returned by executing func dealData(as above), which structure is like Eg Data2:

    [
      {
        "name": "安徽",
        "state": [
          {
            "name": "蚌埠",
            "state": [{
              "name": "蚌埠分公司"
            }]
          },
          {
            "name": "阜阳",
            "state": [{
              "name": "阜阳分公司"
            }]
          },
          {
            "name": "合肥",
            "state": [{
              "name": "合肥分公司1"
            },
            {
              "name": "合肥分公司2"
            }
          }
        ]
      },
      {
        "name": "江苏",
        "state": [
          {
            "name": "苏州",
            "state": [{
              "name": "苏州分公司"
            }]
          }, 
          {
            "name": "常州",
            "state": [
            {
              "name": "常州分公司1"
            },
            {
              "name": "常州分公司2"
            },
            {
              "name": "常州分公司3"
            }]
          },
          ...
        ]
      },
    ]

• @param selectElArr: Type Array, each item is the id string of a select element in your html file, eg:["province","city","shop"]. The html fragment is like:

    <form>
      ...
      <select name="province" id="province" style="top:290px;">
      </select>
      <select name="city" id="city" style="top:290px;left:192px;">
      </select>
      <select name="shop" id="shop" style="top:387px;width:178px;">
      </select>
      ...
    </form>