Question

＆＃13;

    var $arr = {
      field_hide : '',
      field_values: '',
      field_triggers: {}
    }

    function setTrigger ($trigger, $values, $show, $arr)  {
      $arr.field_hide += $show + ',';
      $arr.field_values += $values + ',';
      $arr.field_triggers[$trigger] = [];   
      $arr.field_triggers[$trigger].push([$values, $show]);
      return $arr;
    }

    $arr = setTrigger('file_drive','local','local_key,local_duk',$arr);
    $arr = setTrigger('file_drive','cloud','cloud_key,cloud_duk',$arr);
    console.log($arr)

＆＃13;

为什么我只获得一维数组？谁能帮我解决这个问题？我想要的结果如下：

＆＃13;

{
 "field_hide": "local_key,local_duk,cloud_key,cloud_duk,",
 "field_values": "local,cloud,",
 "field_triggers": {
  "file_drive": [
    ["local","local_key,local_duk"],
    ["cloud","cloud_key,cloud_duk"]
   ]
 }
}

＆＃13;

Answer 1

每次使用此行将数组设置为空数组：

$arr.field_triggers[$trigger] = [];

相反，您需要检查数组是否已经定义，如下所示：

var $arr = {
    field_hide: '',
    field_values: '',
    field_triggers: {}
}

function setTrigger($trigger, $values, $show, $arr) {
    $arr.field_hide += $show + ',';
    $arr.field_values += $values + ',';

    if (!$arr.field_triggers[$trigger]) {
        $arr.field_triggers[$trigger] = [];
    }

    $arr.field_triggers[$trigger].push([$values, $show]);
    return $arr;
}

$arr = setTrigger('file_drive', 'local', 'local_key,local_duk', $arr);
$arr = setTrigger('file_drive', 'cloud', 'cloud_key,cloud_duk', $arr);
console.log($arr)

Answer 2

这是因为您在使用此行file_drive添加新内容之前，每次都会将$arr.field_triggers[$trigger] = [];重置为空数组。您可以添加if语句来确定是否创建新数组。

    var $arr = {
      field_hide : '',
      field_values: '',
      field_triggers: {}
    }

    function setTrigger ($trigger, $values, $show, $arr)  {
      $arr.field_hide += $show + ',';
      $arr.field_values += $values + ',';

      if (!$arr.field_triggers[$trigger]) {
        $arr.field_triggers[$trigger] = [];
      }

      $arr.field_triggers[$trigger].push([$values, $show]);
      return $arr;
    }

    $arr = setTrigger('file_drive','local','local_key,local_duk',$arr);
    $arr = setTrigger('file_drive','cloud','cloud_key,cloud_duk',$arr);
    console.log($arr)

Answer 3

您每次都使用空arry初始化$arr.field_triggers[$trigger] = [];，请使用下面的代码

var $arr = {
      field_hide : '',
      field_values: '',
      field_triggers: {$trigger:[]}
    };

    function setTrigger ($trigger, $values, $show, $arr)  {
      $arr.field_hide += $show + ',';
      $arr.field_values += $values + ',';
      $arr.field_triggers.$trigger.push([$values, $show]);
      return $arr;
    }

    $arr = setTrigger('file_drive','local','local_key,local_duk',$arr);
    $arr = setTrigger('file_drive','cloud','cloud_key,cloud_duk',$arr);
    console.log($arr)

为什么我只获得一维数组？

3 个答案: