Question

我有以下json数组：

{"0":  
   {"ChkSystem":
      {"id":"847",
       "item":"1",
       "fase":"#FE99CC",
       "description":"some info.",
       "image_path":"",
       "pm_id":"461",
       "main_systems_id":"1"
      }
   },
 "1":
   {"ChkSystem":
      {"id":"846",
       "item":"1",
       "fase":"#FE99CC",
       "description":"some data",
       "image_path":"",
       "pm_id":"461",
       "main_systems_id":"2"
      }
   },
"2":
  {"ChkSystem":
     {"id":"856",
      "item":"2",
      "fase":"#FE99CC",
      "description":"some data.",
      "image_path":"",
      "pm_id":"461",
      "main_systems_id":"2"
     }
  }
}

如何使用jquery按"main_systems_id"过滤它？问题是密钥是变量（"0"，"1"等等），而在我读过的其他帖子中，密钥总是相同的。

提前感谢您的回答。

Answer 1

我认为像lodash或underscore这样的工具更适合这种性质。

但是你真的想用jQuery做这件事：

function filterByMainSystemsId (object, value) {

  // The real meat of the solution, you can use this directly if you want.
  return $.map(object, function (item, key) { 

      // this is where the check is done
      if (item.ChkSystem.main_systems_id === value) {

        // if you want the index or property "0", "1", "2"... etc.
        // item._index = key;

        return item; 
      }
    });
  };
}

var object = /* ... your object goes here ... */;
var array = filterByMainSystemsId(object, "2") // [ { ... }, { ... } ]

我同意，这应该是一个数组，而不是一个对象，但像弹性搜索和其他工具这样的东西使这很难，我可以理解。

Answer 2

这不是数组，而是包含子对象的对象。这将是json数组的代码：

[
{"ChkSystem":
      {"id":"847",
       "item":"1",
       "fase":"#FE99CC",
       "description":"some info.",
       "image_path":"",
       "pm_id":"461",
       "main_systems_id":"1"
      }
   },
   {"ChkSystem":
      {"id":"846",
       "item":"1",
       "fase":"#FE99CC",
       "description":"some data",
       "image_path":"",
       "pm_id":"461",
       "main_systems_id":"2"
      }
   },
  {"ChkSystem":
     {"id":"856",
      "item":"2",
      "fase":"#FE99CC",
      "description":"some data.",
      "image_path":"",
      "pm_id":"461",
      "main_systems_id":"2"
     }
  }
]

但您也可以遍历json对象（键值对）并进一步过滤它们。见StackOverflow: loop and get key/value pair for JSON array using jQuery

使用jquery按特定元素过滤多维json数组

2 个答案: