how to make array of objects in javascript using different objects?

Question

I am trying to make a array which have objects .Actually I need to push object in array but before I have some conditions

• I have a array(a is array of objects) .I need to first remove all objects which have property "hidden": true, .I am able to do that like this

• I have another b (b is is array of objects).in which I need to collect values from that using parameter fieldNameOrPath .Those value which are deleted from first array which have hidden :true need not to consider in second array .Not to check fieldNameOrPath .Or we can also delete those are deleted from first array using fieldNameOrPath

I trying to fetch values try to get expected result I fail to get

   var deletedfieldNameOrPath=[ ];
    for (var i = 0; i < a.length; i++) {
        if (a[i].hidden) {
            deletedfieldNameOrPath.push(a[i].fieldNameOrPath)
            delete a[i]
        }
    }
console.log(a);
console.log(deletedfieldNameOrPath);

var objectarray = []
for (var i = 0; i < b.length; i++) {
    for (var k = 0; k < b[i].columns.length; k++) {
        var obj = {};
        if (deletedfieldNameOrPath.indexOf(b[i].columns.fieldNameOrPath) == -1) {
            obj.b[i].columns.fieldNameOrPath = b[i].columns.value;
        }
        objectarray.push(obj)

    }

}

Expected array

 [{
    Type__c: "pqr",
    akritiv__So_Number__c: "a"
}, {
    Type__c: "Invoice",
    akritiv__So_Number__c: "-"
}, {
    Type__c: "inc",
    akritiv__So_Number__c: "c"
}, ]

here is fiddle http://jsfiddle.net/93m4wbh1/

Answer 1

There is no reason to delete elements from the array. Try this.

var a = [{
    "hidden": true,
        "fieldNameOrPath": "Name",

}, {
    "hidden": true,
        "fieldNameOrPath": "akritiv__Account__r.Name",
}, {
    "hidden": false,
        "fieldNameOrPath": "Type__c",
}, {
    "hidden": false,
        "fieldNameOrPath": "akritiv__So_Number__c",
}];

var collectNameOrPath =
    a.filter(function(o) { return !o.hidden })
     .map(function(o) { return o.fieldNameOrPath });


console.log(collectNameOrPath);

var b = [{
    "columns": [{
        "value": "a0RK0000002l3AB",
            "fieldNameOrPath": "Name"
    }, {
        "value": "Sun Life Financial",
            "fieldNameOrPath": "akritiv__Account__r.Name"
    }, {
        "value": "pqr",
            "fieldNameOrPath": "Type__c"
    }, {
        "value": "a",
            "fieldNameOrPath": "akritiv__So_Number__c"
    }]
}, {
    "columns": [{
        "value": "a0RK0000002l3ac",
            "fieldNameOrPath": "Name"
    }, {
        "value": "Scottish Power",
            "fieldNameOrPath": "akritiv__Account__r.Name"
    }, {
        "value": "Invoice",
            "fieldNameOrPath": "Type__c"
    }, {
        "value": "-",
            "fieldNameOrPath": "akritiv__So_Number__c"
    }]
}, {
    "columns": [{
        "value": "a0RK0000002l3aC",
            "fieldNameOrPath": "Name"
    }, {
        "value": "FirstEnergy",
            "fieldNameOrPath": "akritiv__Account__r.Name"
    }, {
        "value": "inc",
            "fieldNameOrPath": "Type__c"
    }, {
        "value": "c",
            "fieldNameOrPath": "akritiv__So_Number__c"
    }]
}]

var nameOrPathValues = b.map(function(o) {
  var result = {};
  o.columns.forEach(function(c) {
    result[c.fieldNameOrPath] = c.value;
  });
  return result;
});

console.log(nameOrPathValues);

var objectarray = nameOrPathValues.map(function(o) {
  var result = {};
  collectNameOrPath.forEach(function(name) {
    result[name] = o[name];
  });
  return result;
});

console.log(objectarray);

Answer 2

You are pretty close to what you want i think.

I did some minor changes:

• First i used splice instead of delete to make sure the object is removed from the array instead of leaving an empty record.
• Then i made sure the object is created and pushed for each column, not each record in each column.
• And at last I fixed a little bug preventing the values to be added to your object, using the [] (like on arrays).

 var a = [{ "hidden": true, "fieldNameOrPath": "Name", }, { "hidden": true, "fieldNameOrPath": "akritiv__Account__r.Name", }, { "hidden": false, "fieldNameOrPath": "Type__c", }, { "hidden": false, "fieldNameOrPath": "akritiv__So_Number__c", }]; var deletedfieldNameOrPath = []; var collectNameOrPath = []; for (var i = 0; i < a.length; i) { if (a[i].hidden) { deletedfieldNameOrPath.push(a[i].fieldNameOrPath) a.splice(i, 1); continue; } else { collectNameOrPath.push(a[i].fieldNameOrPath); } i ++; } console.log(a); console.log(deletedfieldNameOrPath); [{ Type__c: "pqr", akritiv__So_Number__c: "a" }, { Type__c: "Invoice", akritiv__So_Number__c: "-" }, { Type__c: "inc", akritiv__So_Number__c: "c" }, ] var b = [{ "columns": [{ "value": "a0RK0000002l3AB", "fieldNameOrPath": "Name" }, { "value": "Sun Life Financial", "fieldNameOrPath": "akritiv__Account__r.Name" }, { "value": "pqr", "fieldNameOrPath": "Type__c" }, { "value": "a", "fieldNameOrPath": "akritiv__So_Number__c" }] }, { "columns": [{ "value": "a0RK0000002l3ac", "fieldNameOrPath": "Name" }, { "value": "Scottish Power", "fieldNameOrPath": "akritiv__Account__r.Name" }, { "value": "Invoice", "fieldNameOrPath": "Type__c" }, { "value": "-", "fieldNameOrPath": "akritiv__So_Number__c" }] }, { "columns": [{ "value": "a0RK0000002l3aC", "fieldNameOrPath": "Name" }, { "value": "FirstEnergy", "fieldNameOrPath": "akritiv__Account__r.Name" }, { "value": "inc", "fieldNameOrPath": "Type__c" }, { "value": "c", "fieldNameOrPath": "akritiv__So_Number__c" }] }] var objectarray = [] for (var i = 0; i < b.length; i++) { var obj = {}; for (var k = 0; k < b[i].columns.length; k++) { if (deletedfieldNameOrPath.indexOf(b[i].columns[k].fieldNameOrPath) == -1) { obj[b[i].columns[k].fieldNameOrPath] = b[i].columns[k].value; } } objectarray.push(obj) } console.log(objectarray);