Js converts json data rows to columns

In order to display the three sequences of such data, namely Zhengzhou, Xinxiang, and Anyang, You need to convert the data into the following forms:

Month Zhengzhou-power Xinxiang-power Anyang-power

201201 33 29 23

201202 35 26 25

201203 34 27 24

201204 36 28 26

201205 34.3 28.8 24.3

In this way, the Ext chart can display it into three sequences.

I wrote the following function to implement this function:

Function CovertData (jsonData, idField, fromField, toField ){
Var result = [], curRecord = null, num;
Var fromFields = fromField. split (',');
// Loop the entire array: [{...}, {...},...]
For (var idx = 0; idx <jsonData. length; idx ++ ){
Num = findIdx (result, idField, jsonData [idx] [idField]);
If (num! =-1 ){
CurRecord = result [num];
}
Else {
CurRecord = {};
};
// Loop the fields in each json object
For (var key in jsonData [idx]) {
// Process the converted data content
For (var I = 0; I <fromFields. length; I ++ ){
If (key = fromFields [I]) {
CurRecord [jsonData [idx] [toField] + '-' + fromFields [I] = jsonData [idx] [key];
Break;
}
}
// Except the data content, only the ID field data is processed
If (key = idField ){
CurRecord [key] = jsonData [idx] [key];
}
}
If (num =-1 ){
Result. push (curRecord );
}
}
Return result;
}

Function findIdx (jsonData, columnName, value ){
For (var idx = 0; idx <jsonData. length; idx ++ ){
If (jsonData [idx] [columnName] = value)
Return idx;
}
Return-1;
}
The JsTestDriver test code is as follows:

TestCase ("Test json data row to column ",{
SetUp: function (){
This. jsonData = [{yearmonth: 201201, ppq: 23, spq: 27, company: 'dfsoft '},
{Yearmonth: 201202, ppq: 33, spq: 38, company: 'dfsoft '},
{Yearmonth: 201203, ppq: 43, spq: 49, company: 'dfsoft '},
{Yearmonth: 201204, ppq: 53, spq: 51, company: 'dfsoft '},
{Yearmonth: 201201, ppq: 29, spq: 26, company: 'vcom '},
{Yearmonth: 201202, ppq: 34, spq: 38, company: 'vcom '},
{Yearmonth: 201203, ppq: 48, spq: 43, company: 'vcom '},
{Yearmonth: 201204, ppq: 52, spq: 59, company: 'vcom'}];

Var fromField = 'ppq, spq', toField = 'company', idField = 'earmonth ';
This. resultData = CovertData (this. jsonData, idField, fromField, toField );
},
"Test store has columns": function (){
Var month1 = this. resultData [findIdx (this. resultData, 'earmonth', 201201)];
Var mon2nd = this. resultData [findIdx (this. resultData, 'earmonth', 201202)];
Var month3 = this. resultData [findIdx (this. resultData, 'earmonth', 201203)];
Var month4 = this. resultData [findIdx (this. resultData, 'earmonth', 201204)];

AssertEquals (4, this. resultData. length );
AssertEquals ('23', month1 ['dfsoft-ppq']);
AssertEquals ('29', month1 ['vcom-ppq']);
AssertEquals ('33', mon2's ['dfsoft-ppq']);
AssertEquals ('34', mon2's ['vcom-ppq']);
AssertEquals ('43 ', month3 ['dfsoft-ppq']);
AssertEquals ('48', month3 ['vcom-ppq']);
AssertEquals ('53', month4 ['dfsoft-ppq']);
AssertEquals ('52', month4 ['vcom-ppq']);

AssertEquals ('27', month1 ['dfsoft-spq']);
AssertEquals ('26', month1 ['vcom-spq']);
AssertEquals ('38', mon2's ['dfsoft-spq']);
AssertEquals ('38', mon2's ['vcom-spq']);
AssertEquals ('49', month3 ['dfsoft-spq']);
AssertEquals ('43 ', month3 ['vcom-spq']);
AssertEquals ('51', month4 ['dfsoft-spq']);
AssertEquals ('59', month4 ['vcom-spq']);
}
})
If the test succeeds, the conversion is successful.