Update array when found same value in Javascript

Question

i have two array. And i want update second array with first array data if found same data. Here is my first array :

var namaFile = [
            {
                billingID: "90009388",
                customerID: "C20121121221327_249",
                name: "201409011141106_082895250262"
            },
            {
                billingID: "90009400",
                customerID: "7885000000007804",
                name: "201410201141125_08287045931"
            },
            {
                billingID: "90009388",
                customerID: "C20121121221327_249",
                name: "201410011171208_082895250262"
            }
        ];

Here second array :

var emailAddr = [
            {
                customerID: "C20121121221327_249",
                email: "[email protected]"
            },
            {
                customerID: "7885000000007804",
                email: "[email protected]"
            }
        ];

Here is my code, but won't work.

for (var i = 0; i < namaFile.length; i++) {
            var files = [];
            for (var j = 0; j < emailAddr.length; j++) {
                if (namaFile[i].customerID == emailAddr[j].customerID) {
                    files.push(namaFile[i].name);
                    emailAddr[j]['files'] = files;
                }
            }
        }

        console.log(emailAddr);

My expected result is like this :

var emailAddr = [
            {
                customerID: "C20121121221327_249",
                email: "[email protected]",
                files : [
                    "201409011141106_082895250262","201410011171208_082895250262"
                ]
            },
            {
                customerID: "7885000000007804",
                email: "[email protected]",
                files : [
                    "201410201141125_08287045931"
                ]
            }
        ];

How to create that result? Thank you.

dizel3d · Accepted Answer · 2014-10-26 09:54:57Z

1

Swap for(...) {. Example

for (var j = 0; j < emailAddr.length; j++) {
    var files = [];
    for (var i = 0; i < namaFile.length; i++) {
        if (namaFile[i].customerID == emailAddr[j].customerID) {
            files.push(namaFile[i].name);
            emailAddr[j]['files'] = files;
        }
    }
}

edited Oct 26, 2014 at 9:54

answered Oct 26, 2014 at 9:37

dizel3d

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Comments

asdf_enel_hak · Accepted Answer · 2014-10-26 09:50:24Z

emailAddr[j]['files'] = files;by this line you are overwriting emailAddr[j]['files'] each times

var namaFile = [{
  billingID: "90009388",
  customerID: "C20121121221327_249",
  name: "201409011141106_082895250262"
}, {
  billingID: "90009400",
  customerID: "7885000000007804",
  name: "201410201141125_08287045931"
}, {
  billingID: "90009388",
  customerID: "C20121121221327_249",
  name: "201410011171208_082895250262"
}];

var emailAddr = [{
  customerID: "C20121121221327_249",
  email: "[email protected]"
}, {
  customerID: "7885000000007804",
  email: "[email protected]"
}];

for (var i = 0; i < namaFile.length; i++) {
  var files = [];
  for (var j = 0; j < emailAddr.length; j++) {
    if (emailAddr[j]['files'] == null)
      emailAddr[j]['files'] = [];
    if (namaFile[i].customerID == emailAddr[j].customerID) {
       
      emailAddr[j]['files'].push(namaFile[i].name);
    }
  }
}

console.log(emailAddr);

mkotar · Accepted Answer · 2014-10-26 09:47:55Z

0

Hi You can use underscore js which can be a good option for you if you have lot of object/data manipulation in your code.

and then your code may look like:

_.each(emailAddr, function(customer) { var files = _.where(namaFile, {customerID: customer.customerID}); customer.files = _.map(files, function(file) { return file.name; }); });

answered Oct 26, 2014 at 9:47

mkotar

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