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What is the best way to to build a new JS object out of an existing JSON object?


What is the best way to to build a new JS object out of an existing JSON object?

By : jojopr
Date : November 19 2020, 03:01 PM
it should still fix some issue I'm hitting an API that returns a json object that has price information for various precious metals, such as bid price, ask price, percent change, high/low, etc. , Edit:
code :
function getMyObj(obj) {

    var types = ['gold', 'silver', 'platinum', 'palladium'];
    var namesMap = {
        ask_usd_toz: 'price',
        change_dollar_usd_toz: 'changeLastClose',
        change_percent_usd_toz: 'percentChange'
    };

    var myObj = {};

    types.forEach(function(type) {
        for (var prop in namesMap) {
            var key = type + '_' + prop;
            if (obj.hasOwnProperty(key)) {
                myObj[type] = myObj[type] || {};
                myObj[type][namesMap[prop]] = obj[key];
            }
        }
    });

    return myObj;
}

getMyObj(response);


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Create a empty JSON object from an existing JSON object array

Create a empty JSON object from an existing JSON object array


By : duckyfuzz
Date : March 29 2020, 07:55 AM
around this issue You can use an object literal to store whatever you want. It is just a bag of properties (i.e. name) and values. e.g. var order = {};
Then an array literal could be used to hold the orders. e.g var orders = []; orders.push(order); But it would be just as easy to use another object literal with the id as a property.
code :
orderManager.dataStore = {
  _data: {},
  //_redundantData = [];  //could easily store in an array if id isn't unique
  get: function (id) {
    return this._data[id];
  },
  getAll: function () {
    return this._data;
  },
  set: function (id, order) {
    validateOrder(order);
    this._data[id] = order;
  },

  clear: function (id) {
    this._data[id] = undefined;
  },
  add: function (order) {
      validateOrder(order);
      this._data[order.id] = order;

  },
  assertNotNull: function (data, key) {
      if(data[key] == undefined) {
        throw new Error("Key Missing: " + key + " for " + data.name);
      }
  },
  validateOrder: function(order) {
    assertNotNull(order,"id");
    assertNotNull(order,"title");
    //etc
  },
  containsOrder: function (id) {
    for(var i=0;i<array.length;i++) {
        if(array[i].id === id) {
            return true;
        }
    }
    return false;
  }
};
Create JSON object by manipulating existing JSON object using Javascript

Create JSON object by manipulating existing JSON object using Javascript


By : Xutong Liu
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I've a JSON object, in which I'm manipulating the data and trying to construct a new JSON object. The issue is I'm not able to find out the create a dynamic part of JSON object. Here is the actual JSON object , Maybe this helps.
It uses a temporary object temp for the count.
code :
{
    "Keystone Foods": {
        "30": {
            "true": 14288,
            "false": 344
        },
        "31": {
            "false": 700,
            "true": 9500
        }
    },
    "Tyson Foods": {
        "32": {
            "false": 227,
            "true": 7049
        },
        "33": {
            "true": 10742,
            "false": 506
        }
    }
}
temp = obj1.reduce(function (r, a) {
    // ...
    return r;
}, {}),
r[a.supplierName] = r[a.supplierName] || {};
{
    "Keystone Foods": {}
}
r[a.supplierName][a.plantId] = r[a.supplierName][a.plantId] || {};
{
    "Keystone Foods": {
        "30": {}
    }
}
r[a.supplierName][a.plantId][a.acptFlag] = a.count;
{
    "Keystone Foods": {
        "30": {
            "true": 14288
    },
}
obj2 = Object.keys(temp).map(function (k) {
    // ...
    return o;
});
var o = { supplierName: k };
Object.keys(temp[k]).forEach(function (kk, i) {
    // ...
});
o[i + 1] = '' + temp[k][kk].false + ' / (' + temp[k][kk].false + ' + ' + temp[k][kk].true + ')';
var obj1 = [{ "acptFlag": true, "count": 14288, "limsFlag": true, "plantId": 30, "plantName": "Camilla, GA", "supplierId": 20, "supplierName": "Keystone Foods" }, { "acptFlag": false, "count": 344, "limsFlag": true, "plantId": 30, "plantName": "Camilla, GA", "supplierId": 20, "supplierName": "Keystone Foods" }, { "acptFlag": false, "count": 700, "limsFlag": true, "plantId": 31, "plantName": "Albany, KY", "supplierId": 20, "supplierName": "Keystone Foods" }, { "acptFlag": true, "count": 9500, "limsFlag": true, "plantId": 31, "plantName": "Albany, KY", "supplierId": 20, "supplierName": "Keystone Foods" }, { "acptFlag": false, "count": 227, "limsFlag": true, "plantId": 32, "plantName": "Green Forest, AR", "supplierId": 21, "supplierName": "Tyson Foods" }, { "acptFlag": true, "count": 7049, "limsFlag": true, "plantId": 32, "plantName": "Green Forest, AR", "supplierId": 21, "supplierName": "Tyson Foods" }, { "acptFlag": true, "count": 10742, "limsFlag": true, "plantId": 33, "plantName": "Dawson, GA", "supplierId": 21, "supplierName": "Tyson Foods" }, { "acptFlag": false, "count": 506, "limsFlag": true, "plantId": 33, "plantName": "Dawson, GA", "supplierId": 21, "supplierName": "Tyson Foods" }],
    temp = obj1.reduce(function (r, a) {
        r[a.supplierName] = r[a.supplierName] || {};
        r[a.supplierName][a.plantId] = r[a.supplierName][a.plantId] || {};
        r[a.supplierName][a.plantId][a.acptFlag] = a.count;
        return r;
    }, {}),
    obj2 = Object.keys(temp).map(function (k) {
        var o = { supplierName: k };
        Object.keys(temp[k]).forEach(function (kk, i) {
            o[i + 1] = '' + temp[k][kk].false + ' / (' + temp[k][kk].false + ' + ' + temp[k][kk].true + ')';
        });
        return o;
    });

document.write('<pre>' + JSON.stringify(temp, 0, 4) + '</pre>');
document.write('<pre>' + JSON.stringify(obj2, 0, 4) + '</pre>');
How to copy object and create new object with existing Json object?

How to copy object and create new object with existing Json object?


By : Hussain M Otudi
Date : March 29 2020, 07:55 AM
will be helpful for those in need I am trying to create new object that will have some default values from scope. , Cloning is an option. Below is an example:
code :
var deepClonedCopy = jQuery.extend(true, {}, originalData);
var clonedData;
clonedData= $.map(deepClonedCopy, function(el) { return el });
$rootScope.default={};
angular.copy($rootScope.answers,$rootScope.default);
console.log($rootScope.answers);
console.log($rootScope.default);
$rootScope.default = angular.copy($rootScope.answers);
Adding empty json object in a pre-existing JSON Object and after a given json object index - Php

Adding empty json object in a pre-existing JSON Object and after a given json object index - Php


By : Romilton Gomes
Date : March 29 2020, 07:55 AM
around this issue so I have an Array of JSON Objects generated from mysql query. , Try to add it via new \StdClass()OR [(object)[]] as example
code :
$test = '[
{"field1": "value1", "field2": "value2"},
{"field1": "value3", "field2": "value4"},
{"field1": "value5", "field2": "value6"},
{"field1": "value7", "field2": "value8"}
]';
 $temp = json_decode($test);
 array_splice($temp, 3, 0, new \StdClass());
$result = json_encode($temp);
var_dump($result);
    $test = '[
{"field1": "value1", "field2": "value2"},
{"field1": "value3", "field2": "value4"},
{"field1": "value5", "field2": "value6"},
{"field1": "value7", "field2": "value8"}
]';
    $temp = json_decode($test);
    $value = (new \StdClass());
    array_splice($temp, 3, 0, [(object)[]]);
    $result = json_encode($temp,true);
    var_dump($result);
How can i insert new json object to existing json file (in the middle of object)

How can i insert new json object to existing json file (in the middle of object)


By : Ryan Flynn
Date : March 29 2020, 07:55 AM
I hope this helps . filejson.json , Step1: Read data
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