使用lodash筛选包含字符串的对象数组

Question

我有一个值，需要返回包含该值在属性中的对象。

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

我需要获取所有包含“CPP@”而不是相等的对象。我已经准备好了一个https://jsfiddle.net/licass/e87mxfqt/

- Leonel Matias Domingos

Answer 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);

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>

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

- Vladu Ionut

---

如何计算返回项目的数量。 - user2613946

变量计数 = 结果.length - Vladu Ionut

Answer 2

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

2022年更新

现在甚至不需要使用lodash了:

collection.filter(o => o.VAL.includes(search));

现在我们可以使用.filter方法用于数组，还有.includes方法用于数组和字符串。当然还有箭头函数！

- k102

---

如果您能添加一些解释会更好！ - Pritam Banerjee

Answer 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)

use javascirpt filter.

- prudvi raju

---

这不是“包含”，而是“相等”。 - Steve