JS 陣列處理方法:https://wcc723.github.io/javascript/2017/06/29/es6-native-array/
//搜尋資料
var main = mains.filter(function(item,index){
if(item[0] == formData.v1 && item[1] == formData.v2){
item[2] = formatName(item[2]);//姓名個資
return true;
}
});