使用 lodash 过滤包含字符串的对象数组答案

【问题标题】：Filter array of objects that contains string using lodash使用 lodash 过滤包含字符串的对象数组
【发布时间】：2016-10-18 02:23:40
【问题描述】：

我有一个值，我需要在属性中返回包含该值的对象。

var search='CPP@';
var results=_.filter(collection,{VAL:search});

我需要抓取所有包含 'CPP@' 的对象，而不是等号。我准备了https://jsfiddle.net/licass/e87mxfqt/

【问题讨论】：

标签： javascript lodash

【解决方案1】：

var collection=[
  {
    "DSP_MAQ": "Máquina 4",
    "VAL": "CPP@4@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 5",
    "VAL": "CMIP@5@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 6",
    "VAL": "CMIP@6@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 7",
    "VAL": "CMIP@7@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 8",
    "VAL": "CPP@8@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 9",
    "VAL": "CMIP@9@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 10",
    "VAL": "CMIP@10@1900-01-01"
  }
 
];
 var search='CPP@';
    var results=_.filter(collection,function(item){
    return item.VAL.indexOf(search)>-1;
    });
    console.log(results);

&lt;script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"&gt;&lt;/script&gt;

 var search='CPP@';
    var results=_.filter(collection,function(item){
    return item.VAL.indexOf(search)>-1;
    });
    console.log(results);

【讨论】：

如何统计退货数量
var count = results.length

【解决方案2】：

var results = _.filter(collection,function(obj) {
    return obj.VAL.indexOf(search) !== -1;
});

【讨论】：

加点解释就更好了！

【解决方案3】：

var collection=[
  {
    "DSP_MAQ": "Máquina 4",
    "VAL": "CPP@4@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 5",
    "VAL": "CMIP@5@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 6",
    "VAL": "CMIP@6@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 7",
    "VAL": "CMIP@7@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 8",
    "VAL": "CPP@8@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 9",
    "VAL": "CMIP@9@1900-01-01"
  },
  {
    "DSP_MAQ": "Máquina 10",
    "VAL": "CMIP@10@1900-01-01"
  }
 
];
 var search='CMIP@9@1900-01-01';
var filterList = collection.filter(function(item) {
 return item.VAL === search;
})
console.log(filterList)

使用 javascirpt 过滤器。

【讨论】：

这不是“包含”——这是“等于”