Question

我正在尝试使用for循环对数组进行迭代，并且效果很好，现在，如果我想在对象内部进行迭代，该怎么做？

下面是我的代码

for (let j = 0; j < sowing.seedSownDetails.length; j++) {
  this.myObj = {
    sowSeedInventoryId: sowing.seedSownDetails[j]?.inventoryId,
    quantity: sowing.seedSownDetails[j]?.quantity
  };
  console.log(this.myObj); //all the iterations work here
}

this.addComments = {
  sowingId: sowing.sowingId,
  cropId: sowing.cropId,
  seedDetails: [this.myObj], // i want all my iteration object inside this array

  seedSowingDate: sowing.sowingDate,
  comments: form.value.comments
};

预期输出：

seedDetails: [
{object1},
{object2},....
]

Answer 1

您可以定义吸气剂：

private get myObj() {
   for (let j = 0; j < this.sowing.seedSownDetails.length; j++) {
      const myObj = {
        sowSeedInventoryId: this.sowing.seedSownDetails[j]?.inventoryId,
        quantity: this.sowing.seedSownDetails[j]?.quantity
      };
    }

    return myObj;
}

像下面这样食用它：

this.addComments = {
   sowingId: sowing.sowingId,
   cropId: sowing.cropId,
   seedDetails: this.myObj, // consume here

   seedSowingDate: sowing.sowingDate,
   comments: form.value.comments,
};

Answer 2

在this.myObj = [];顶部或内部声明constructor，并如下所示修改代码

for (let j = 0; j < sowing.seedSownDetails.length; j++) {
      this.myObj.push({
        sowSeedInventoryId: sowing.seedSownDetails[j]?.inventoryId,
        quantity: sowing.seedSownDetails[j]?.quantity
      });
    }

    this.addComments = {
      sowingId: sowing.sowingId,
      cropId: sowing.cropId,
      seedDetails: this.myObj, // You will get array of objects here as expected

      seedSowingDate: sowing.sowingDate,
      comments: form.value.comments,
    };

对象内部for循环的迭代

2 个答案: