js json 데이터 줄 에서 열 로 전환 하 는 인 스 턴 스 코드

function CovertData(jsonData,idField, fromField, toField){ 
var result = [], curRecord =null, num; 
var fromFields = fromField.split(','); 
//       ：[{...},{...},{...},...] 
for(var idx=0;idx<jsonData.length;idx++){ 
num = findIdx(result, idField, jsonData[idx][idField]); 
if(num!=-1){ 
curRecord = result[num]; 
} 
else{ 
curRecord = {}; 
}; 
//     json       
for(var key in jsonData[idx]){ 
//           
for(var i=0;i<fromFields.length;i++){ 
if(key == fromFields[i]){ 
curRecord[jsonData[idx][toField]+'-' + fromFields[i]] = jsonData[idx][key]; 
break; 
} 
} 
//       ，          
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; 
} 
JsTestDriver       ：
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 = 'yearmonth'; 
this.resultData = CovertData(this.jsonData,idField,fromField, toField); 
}, 
"test store has columns":function(){ 
var month1 = this.resultData[findIdx(this.resultData,'yearmonth',201201)]; 
var month2 = this.resultData[findIdx(this.resultData,'yearmonth',201202)]; 
var month3 = this.resultData[findIdx(this.resultData,'yearmonth',201203)]; 
var month4 = this.resultData[findIdx(this.resultData,'yearmonth',201204)]; 
assertEquals(4,this.resultData.length); 
assertEquals('23',month1['dfsoft-ppq']); 
assertEquals('29',month1['vcom-ppq']); 
assertEquals('33',month2['dfsoft-ppq']); 
assertEquals('34',month2['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',month2['dfsoft-spq']); 
assertEquals('38',month2['vcom-spq']); 
assertEquals('49',month3['dfsoft-spq']); 
assertEquals('43',month3['vcom-spq']); 
assertEquals('51',month4['dfsoft-spq']); 
assertEquals('59',month4['vcom-spq']); 
} 
})