Javascript数组检查值并分配到数组中

Question

所以，我有一个 PHP 函数，它将读取 csv 文件，然后将其传递给 angularJS。

csv文件内部有4种类型的数据

[0] => Number,
[1] => Code,
[2] => Description,
[3] => Qty

但是，还有“面积”数据。 “区域”将位于“数字”[2]

[0] => "",
[1] => "",
[2] => Area,
[3] => ""

这是插图

//Part 1
"","","Area 1",""
"No","Code","Description","QTY"
"No","Code","Description","QTY"
"No","Code","Description","QTY"
"No","Code","Description","QTY"
"No","Code","Description","QTY"
//Part 2
"","","Area 2",""
"No","Code","Description","QTY"
"No","Code","Description","QTY"
"No","Code","Description","QTY"
"No","Code","Description","QTY"
//And so on

我想要实现的是，如何获取该区域，然后通过检查 [0] 是否为空且 [2] 不为空，然后将其插入数组中，那么它就是数组对象其余部分的区域，一旦检测到与之前相同的条件，它将为另一个部分分配新区域。

这是我的数组，名为 vm.products

for (var index = 0; index < resp.data.csv.length; index++) {
   vm.products.push({
      code: resp.data.csv[index][1],
      qty: resp.data.csv[index][3], 
      //area: resp.data.csv[index].area,
      description: resp.data.csv[index][2]
   });
}

感谢您提供的任何帮助:)

Answer 1

首先，您必须检查当前条目是否包含该区域。如果是这样，请将其存储起来，直到下一个区域到来。发生这种情况时，只需用新区域替换旧区域即可。

将产品推送到数组时，只需使用 Area 变量，因为它始终包含正确的 Area。

var area = “”;
for (var index = 0; index < resp.data.csv.length; index++) {
    var current = resp.data.csv[index];
    if (current[2] != “” && (!current[0] || current[0] == "") {
        area = current[2];
    } else {
        vm.products.push({
            code: current[1],
            qty: current[3], 
            area: area,
            description: current[2]
        });
    }
}

此解决方案将仅在数组上循环一次，而不是在下面的答案中首先使用 map 时循环多次。