处理插件

时间:2017-02-03 08:41:51

标签: javascript jquery json object

我创建了一个简单的javascript插件,它允许我从特定的html元素中收集数据。页面可以包含x个元素(通常最多20个),每个元素都有自己的设置。我的问题是返回的对象不是有效的JSON格式,因为我收到错误“多个JSON根元素”。

我认为原因是因为我在插件中使用的每个函数,它为每个对象创建一个新对象,我试图解决这个问题;结果不好。

所有帮助都将受到高度赞赏,提前感谢!

示例插件

(function($) {

$.fn.collect_data = function() {


    this.each(function() {

        var id = "#" + ($(this).attr("id"));

        // Get numerical value of id
        var get_package_id = function() {
            var package_id = id.replace(/[^0-9]/g, '');
            return package_id;
        }       

        // Packages is the top level container
        var get_packages = function() {
            var packages = {};

            packages = ({[get_package_id()]: {}});
            return packages;
        }


        // Demo information for each invidual package
        var get_package_info = function() {
            var info = {};

            $(id).each(function() {

                info = ({
                    value: 'Some value', 
                    another_value: 'Another value'
                });
            });

            return info;
        }

        // Demo information for each invidual package
        var get_more_info = function() {
            var more_info = {};

            $(id).each(function() {

                more_info = ({
                    value_more_info: 'Some value', 
                    another_value_more_info: 'Another value'
                });
            });

            return more_info;
        }           

        // Combine the demo information
        var result = function() {

            var packages = get_packages();
            var info = get_package_info();
            var more_info = get_more_info();

            packages[get_package_id()].info = info;
            packages[get_package_id()].more_info = more_info;

            return packages;
        }

        $("#show-data").append(JSON.stringify(result(), null, 2));

    });
    return this; 
}

}(jQuery));     

结果无效

                {
  "33": {
    "info": {
      "value": "Some value",
      "another_value": "Another value"
    },
    "more_info": {
      "value_more_info": "Some value",
      "another_value_more_info": "Another value"
    }
  }
}{
  "74": {
    "info": {
      "value": "Some value",
      "another_value": "Another value"
    },
    "more_info": {
      "value_more_info": "Some value",
      "another_value_more_info": "Another value"
    }
  }
}{
  "99": {
    "info": {
      "value": "Some value",
      "another_value": "Another value"
    },
    "more_info": {
      "value_more_info": "Some value",
      "another_value_more_info": "Another value"
    }
  }
}{
  "124": {
    "info": {
      "value": "Some value",
      "another_value": "Another value"
    },
    "more_info": {
      "value_more_info": "Some value",
      "another_value_more_info": "Another value"
    }
  }
}{
  "124": {
    "info": {
      "value": "Some value",
      "another_value": "Another value"
    },
    "more_info": {
      "value_more_info": "Some value",
      "another_value_more_info": "Another value"
    }
  }
}

所有数据应该在顶级{}容器内,而不是在自己的{}内添加每个对象。

提前感谢所有帮助

1 个答案:

答案 0 :(得分:0)

谈论完全过度设计的代码。所有那些只被调用一次的函数有什么意义?为什么要制作一个你无法重复使用的插件?

让我们将您的代码放入其实际行为:

var data = $("foo").map(function () {
    return {
        package_id: "#" + this.id.replace(/[^0-9]/g, ''),
        info: {
            value: 'Some value', 
            another_value: 'Another value'
        },
        more_info: {
            value_more_info: 'Some value', 
            another_value_more_info: 'Another value'
        }
    };
}).toArray();

$("#show-data").text(JSON.stringify(data, null, 2));

旁注:

不要使用这样的数据结构:

{
   "uniqueID1": {"some": "data"},
   "uniqueID2": {"some": "data"},
   "uniqueID3": {"some": "data"}
}

将对象误用为数组。

在这种情况下,您真正​​想要创建的是一个数组。它将使所有相关方更容易生活

[
   {"id": "uniqueID1", "some": "data"},
   {"id": "uniqueID2", "some": "data"},
   {"id": "uniqueID3", "some": "data"}
]