JSON 的完整語法 - JSON函式 - store2JSON

一.JSON stands for JavaScript Object Notation

JSON 的完整語法如下：

JSON = null

    or true or false
    or JSONNumber
    or JSONString
    or JSONObject
    or JSONArray

JSONNumber = - PositiveNumber
          or PositiveNumber
PositiveNumber = DecimalNumber
              or DecimalNumber . Digits
              or DecimalNumber . Digits ExponentPart
              or DecimalNumber ExponentPart
DecimalNumber = 0
             or OneToNine Digits
ExponentPart = e Exponent
            or E Exponent
Exponent = Digits
        or + Digits
        or - Digits
Digits = Digit
      or Digits Digit
Digit = 0 through 9
OneToNine = 1 through 9

JSONString = ""
          or " StringCharacters "
StringCharacters = StringCharacter
                or StringCharacters StringCharacter
StringCharacter = any character
                  except " or \ or U+0000 through U+001F
               or EscapeSequence
EscapeSequence = \" or \/ or \\ or \b or \f or \n or \r or \t
              or \u HexDigit HexDigit HexDigit HexDigit
HexDigit = 0 through 9
        or A through F
        or a through f

JSONObject = { }
          or { Members }
Members = JSONString : JSON
       or Members , JSONString : JSON

JSONArray = [ ]
         or [ ArrayElements ]
ArrayElements = JSON
             or ArrayElements , JSON

二.JSON函式用法
A common use of JSON is to exchange data to/from a web server.
When sending data to a web server, the data has to be a string.
Convert a JavaScript object into a string with JSON.stringify()

Ex:1

const obj = {name: "John", age: 30, city: "New York"};
const myJSON = JSON.stringify(obj)

Ex2: 畫面的 store 轉成 JSON String

function mySub1_OkBtn_click() {                

        //0 > 將目前畫面的store資料, 存成 np(多筆資料) 當參數, 傳給 處理 url

        console.log("0 mySub1_OkBtn_click - 列印包裝標籤.確定");

        var Tmp_sub_store = Ext.getCmp('sub_Grid').store;

        var cur_rec;

        var Tmp_SAPNO, Tmp_PN, Tmp_QTY, Tmp_EOCND, Tmp_RMK;

        var Tmp_data_JSON = "";  //將store資料轉成 JSON 的字串

        var Tmp_sub_np = {};        

        let Tmp_DataAry1 = [];

        var Tmp_Str="";

        for (i = 0; i < Tmp_sub_store.getCount(); i++) {

            cur_rec = Tmp_sub_store.getAt(i);

            console.log(Tmp_Str + "cur_rec:", cur_rec);

            Tmp_DataAry1.push(cur_rec.data);            

        }

        console.log("Tmp_DataAry1:", Tmp_DataAry1);        

        let Tmp_DataString1 = JSON.stringify(Tmp_DataAry1);

        console.log("Tmp_DataString1:", Tmp_DataString1);

        var Tmp_CHKDT = Ext.getCmp("sub_DT").getValue();

        console.log("Tmp_CHKDT:", Tmp_CHKDT);

        var np = {};

        np = {

            DataString1: Tmp_DataString1,  //將子畫面的資料(store)轉成 JSON字串

            CHKDT: Tmp_CHKDT,

        };        

        Ext.getCmp('mySubForm').submit({

            //Ext.Ajax.request({

            url: '../../api/V120502API/DoPRNLIST',

            method: 'POST',

            async: false,

            standardSubmit: true, // 非 Ajax 的方式  //若要傳送檔案至前端, standardSubmit必需設為 true  

            params: np,

        });