如何从javascript中的嵌套数组对象中找到最大值？答案

【问题标题】：How to find the biggest value for from nested array Object in javascript?如何从javascript中的嵌套数组对象中找到最大值？
【发布时间】：2017-05-06 21:16:47
【问题描述】：

我对 javascript 很陌生。我有点困惑如何从嵌套数组中找到特定数组对象的最大值。例如

如果我们有一个像这样的巨大数组...

 [ 
    .....
     [ { id: 0, value: 13, jobs: [Object], name: 'M1' },
            { id: 1, value: 19, jobs: [Object], name: 'M2' } ],

          [ { id: 0, value: 13, jobs: [Object], name: 'M1' },
            { id: 1, value: 19, jobs: [Object], name: 'M2' } ],

          [ { id: 0, value: 19, jobs: [Object], name: 'M1' },
            { id: 1, value: 13, jobs: [Object], name: 'M2' } ],

          [ { id: 0, value: 21, jobs: [Object], name: 'M1' },
            { id: 1, value: 11, jobs: [Object], name: 'M2' } ],

          [ { id: 0, value: 19, jobs: [Object], name: 'M1' },
            { id: 1, value: 13, jobs: [Object], name: 'M2' } ],

          [ { id: 0, value: 11, jobs: [Object], name: 'M1' },
            { id: 1, value: 21, jobs: [Object], name: 'M2' } ] 
....
    ]

如何借助嵌套数组中的 valueObject 找到每个数组对象值中的最大值。抱歉，我并不擅长解释我的问题但是看看这个例子......

[ 
        .....
             //Higest value of the value Object in below Array Object is 19
            [ 
            { id: 0, value: 13, jobs: [Object], name: 'M1' },
                { id: 1, value: 19, jobs: [Object], name: 'M2' } 
            ],
          //Higest value of the value Object in below Array Object is 18
              [ 
                { id: 0, value: 13, jobs: [Object], name: 'M1' },
                { id: 1, value: 18, jobs: [Object], name: 'M2' } 
             ],
          //Higest value of the value Object in below Array Object is 21
              [ 
                { id: 0, value: 21, jobs: [Object], name: 'M1' },
                { id: 1, value: 13, jobs: [Object], name: 'M2' }
              ],


    ....
        ]

我的结果应该是这样的像这样打印最低的数组对象

//Higest value of the value Object in below Array Object is 18
                  [ 
                    { id: 0, value: 13, jobs: [Object], name: 'M1' },
                    { id: 1, value: 18, jobs: [Object], name: 'M2' } 
                 ],
 //Higest value of the value Object in below Array Object is19
                [ 
                { id: 0, value: 13, jobs: [Object], name: 'M1' },
                    { id: 1, value: 19, jobs: [Object], name: 'M2' } 
                ],

【问题讨论】：

标签： javascript arrays node.js object multidimensional-array

【解决方案1】：

你可以使用 Lodash 库来获取它。

可在：https://lodash.com

以下是如何使用 Loadash 执行此操作的示例：

首先，假设您的数据结构为：

var myArray = [ 
      [ { id: 0, value: 13, jobs: [Object], name: 'M1' },
            { id: 1, value: 19, jobs: [Object], name: 'M2' } ],

      [ { id: 0, value: 13, jobs: [Object], name: 'M1' },
        { id: 1, value: 19, jobs: [Object], name: 'M2' } ],

      [ { id: 0, value: 19, jobs: [Object], name: 'M1' },
        { id: 1, value: 13, jobs: [Object], name: 'M2' } ],

      [ { id: 0, value: 21, jobs: [Object], name: 'M1' },
        { id: 1, value: 11, jobs: [Object], name: 'M2' } ],

      [ { id: 0, value: 19, jobs: [Object], name: 'M1' },
        { id: 1, value: 13, jobs: [Object], name: 'M2' } ],

      [ { id: 0, value: 11, jobs: [Object], name: 'M1' },
        { id: 1, value: 21, jobs: [Object], name: 'M2' } ] 
];

您可以使用 Loadash 找到每个子数组的较大值：

_.forEach(myArray, function(subArray) {
    var subArrayValues = _.map(subArray, function (o) { 
        return o.value;
    });

    var subArrayMaxValue = _.max(subArrayValues);
    var subArrayMinValue = _.min(subArrayValues);

    console.log("Higest value of the value Object in below Array Object is " + subArrayMaxValue);
    console.log("Lowest value of the value Object in below Array Object is " + subArrayMinValue);
    console.log(subArray);
});

【讨论】：