在jqgrid中添加公式

colModel: [
  { name: 'quantity', index: 'quantity', width: 100 },
  { name: 'price', index: 'price', width: 100 },
  { name: 'total', index: 'total', width: 100, formatter: calculateTotal }
]

function calculateTotal(cellValue, options, rowObject) {
  var quantity = parseFloat(rowObject.quantity);
  var price = parseFloat(rowObject.price);
  var total = quantity * price;
  return total.toFixed(2); // 返回保留两位小数的结果
}