I have an array named data as shown below and an array of objects named obj1.

var data = ["004", "456", "333", "555"];


obj1 = [{
  id: "004",
  name: "Rick",
  Active: "false"
  }, {
    id: "005",
    name: 'david',
    Active: "false"
}];

I check if elements of array data are present in the obj1. This is the code for that. It will give that "004" as the answer as 004 is present in the obj1.

out = [];

_.each(arr, function(value1, key1, obj1) {
   _.each(data, function(value, key, obj) {
        if (value1.id == value) out.push(value);
   });
});

console.log(out);

Now i want the following to be added too

var Activecheck = false;

I want to check if elements of arrray data is present in obj1 where the obj1.Active field is equal to false. Any way to add this variable into my code where I can check this condition?

I have an array named data as shown below and an array of objects named obj1.

var data = ["004", "456", "333", "555"];


obj1 = [{
  id: "004",
  name: "Rick",
  Active: "false"
  }, {
    id: "005",
    name: 'david',
    Active: "false"
}];

I check if elements of array data are present in the obj1. This is the code for that. It will give that "004" as the answer as 004 is present in the obj1.

out = [];

_.each(arr, function(value1, key1, obj1) {
   _.each(data, function(value, key, obj) {
        if (value1.id == value) out.push(value);
   });
});

console.log(out);

Now i want the following to be added too

var Activecheck = false;

I want to check if elements of arrray data is present in obj1 where the obj1.Active field is equal to false. Any way to add this variable into my code where I can check this condition?

• javascript
• arrays
• object
• underscore.js

• 2 if (value1.id == value && value1.Active == false) ? – Aᴍɪʀ Commented Nov 17, 2016 at 1:30
• 1 You can filter your obj1 array with condition active = false. It will give you only object with active false. Use Array.filter, and then you can use Array.some to check if value exists in filtered array. – Sandip Nirmal Commented Nov 17, 2016 at 1:31
• @Amir- The value 'Activecheck' can be true or false and it is dynamic in nature. hence i cannot directly put a condition of false. – Adu Rao Commented Nov 17, 2016 at 1:33
• if (value1.id == value && value1.Active == Activecheck) ? – Aᴍɪʀ Commented Nov 17, 2016 at 1:39

3 Answers 3

Using Array.filter might be cleaner, like so:

var activeCheck = "false";
var out = obj1.filter(function(item) {
  return item.active === activeCheck && data.includes(item.id);
});

With underscore, use the _.filter function:

var isActive = "false"; // get that value dynamically
var result = _.filter(obj1, function(value) {
  return data.indexOf(value.id) > -1 && value.Active === isActive;
});

var data = ["004", "456", "333", "555"];


obj1 = [{
  id: "004",
  name: "Rick",
  Active: "false"
}, {
  id: "005",
  name: 'david',
  Active: "false"
}];

var result = _.filter(obj1, function(value) {
  return data.indexOf(value.id) > -1 && value.Active === "false";
});

console.log(result);

<script src="https://cdnjs.cloudflare./ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>

A more generic way is to use _.where to filter by any attributes, easily set in an object, which you can build dynamically:

var filters = { Active: "false" }; // add any attributes to filter more precisely

var filtered = _.where(obj1, filters);

var result = _.filter(filtered, function(value) {
  return data.indexOf(value.id) > -1;
});

var data = ["004", "456", "333", "555"];


obj1 = [
  { id: "004", name: "Rick", Active: "false"}, 
  { id: "005", name: 'david', Active: "false"},
  { id: "456", name: "Steeve", Active: "false", test: 1}, 
];

var filters = { Active: "false", test: 1 };

var filtered = _.where(obj1, filters);

var result = _.filter(filtered, function(value) {
  return data.indexOf(value.id) > -1;
});

console.log(result);

<script src="https://cdnjs.cloudflare./ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>

You can even chain calls:

var result = _.chain(obj1)
    .where({ Active: "false" })
    .filter(function(value) {
        return data.indexOf(value.id) > -1;
    })
    .value();

And as a function:

function filterWithData(obj, filters) {
    // if you want to filter (e.g. Active) by default
    // filters = _.extend({ Active: "false" }, filters);
    return _.chain(obj)
        .where(filters)
        .filter(function(value) {
            return data.indexOf(value.id) > -1;
        })
        .value();
}

Then use the function whenever you need it:

var result = filterWithData(obj1, { Active: "false" });

You could simply use filter and includes to achieve what you want.

var data = ["004", "456", "333", "555"];


var obj1 = [{
  id: "004",
  name: "Rick",
  Active: "false"
}, {
  id: "005",
  name: 'david',
  Active: "false"
}];

var result = obj1.filter((ele, idx) => {
  return data.includes(ele.id) && ele.Active === "false";
});

console.log(result);