CODEWITHSUNDEEP
javascriptobject
Anup
Anup

Reputation: 9748

Javascript - Insert an item in Object

How to insert an item in an object in Javascript?

var colorData = new Object();
var stateData = {
           states:
            [
              { 'state' : 'CA', 'color' : '#61c419', 'amaguide' : '5'},
              { 'state' : 'AZ', 'color' : '#61c419', 'amaguide' : '5'}
            ]
    }

for (var i = 0; i < stateData.length; i++) {            
       colorData.push(stateData[i].state + ':' + stateData[i].color);            
    }

-------------------edited--------------------

I want the new colorData in the following format :-

{'CA': '#61c419', 'AZ':'#61c419'}

Thanks

Upvotes: 2

Views: 191

Answers (4)

Nidhish Krishnan
Nidhish Krishnan

Reputation: 20751

Its very easy try this out

Working Demo

var colorData = new Object();
var stateData = {
           states:
            [
              { 'state' : 'CA', 'color' : '#61c419', 'amaguide' : '5'},
              { 'state' : 'AZ', 'color' : '#61c419', 'amaguide' : '5'}
            ]
};
for(var i=0; i<stateData.states.length; i++)
{
    colorData[stateData.states[i].state] = stateData.states[i].color;
}

console.log(JSON.stringify(colorData));

Output

{"CA":"#61c419","AZ":"#61c419"}

Upvotes: 1

xdazz
xdazz

Reputation: 160893

Array.prototype.map() is your friend:

var stateData = {
           states:
            [
              { 'state' : 'CA', 'color' : '#61c419', 'amaguide' : '5'},
              { 'state' : 'AZ', 'color' : '#61c419', 'amaguide' : '5'}
            ]
    };


var colorData = stateData.states.map(function(ele) {
    return ele.state + ':' + ele.color;
});

If you want the result to be {CA: '#61c419', AZ: '#61c419'}, then:

var colorData = stateData.states.reduce(function(v, w) {
    v[w.state] =  w.color;
    return v; 
}, {});

Upvotes: 2

slevon
slevon

Reputation: 339

Maybe a Array is better for that:

...
var colorData = new Array();
...

Upvotes: 0

phylax
phylax

Reputation: 2086

Simply assign the item to an object property. .push() is for arrays.

var o = {};
o.newProperty = 'hier';
o.otherProperty = [1, 2, 3];

Upvotes: 0

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