Question

如何在JavaScript中拆分数据数组

$index = array_flip(array_map(function($val){
    return $val["fieldId"];
}, $arr));
echo $index["ORStreet"];
// output: 11

更改为

{x:30, y:45, x:36, y:49}

？

我需要此表格才能将坐标传递给SVG折线。我找到了一种名为[30, 45, 36, 49]的方法，但我不知道如何使用它。

Answer 1

您的对象重复键，这在javascript中是不允许的。映射功能适用于数组而不适用于对象。

如果您有一个键为x，y，z的对象，则可以使用{ "name": "[concat(parameters('factoryName'), '/Veh_Obj')]", "type": "Microsoft.DataFactory/factories/datasets", "apiVersion": "2018-06-01", "properties": { "linkedServiceName": { "referenceName": "AzureDataLakeStore1", "type": "LinkedServiceReference" }, "annotations": [], "type": "AzureDataLakeStoreFile", "structure": [ { "name": "TBL_ID", "type": "int" }, { "name": "SYS_ADD_DATE", "type": "date" }, { "name": "SYS_CHG_DATE", "type": "date" }, { "name": "CODE", "type": "string" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" }, { "name": "Need to remove this value pair", "type": "Need to remove this value pair" } ], "typeProperties": { "format": { "type": "TextFormat", "columnDelimiter": "|", "rowDelimiter": "", "quoteChar": "\"", "nullValue": "\"\"", "encodingName": null, "treatEmptyAsNull": true, "skipLineCount": 0, "firstRowAsHeader": false }, "fileName": "[parameters('Veh_Obj_properties_typeProperties_fileName')]", "folderPath": "[parameters('Veh_Obj_properties_typeProperties_folderPath')]" } }, "dependsOn": [ "[concat(variables('factoryId'), '/linkedServices/AzureDataLakeStore1')]" ] }将其转换为数组

Object.values

但是，如果您想构造一条折线，则将具有如下所示的数组：

const obj = {x:30, y:45, z:36};

//outputs: [30, 45, 36]
console.log(Object.values(obj));

然后您将获得map方法。您可以执行以下操作：

[{x:30, y:45},{x:36, y:49}]

SVG折线JS的分割数组

1 个答案: