As you can read this JSON using jquery or javaScript

Question

As you can read this JSON using jQuery or JavaScript. I never use JSON.

{
    "ES": {
        "130": {
            "code": "A Coruсa",
            "name": "A Coruña"
        },
        "131": {
            "code": "Alava",
            "name": "Alava"
        },
        "132": {
            "code": "Albacete",
            "name": "Albacete"
        }

To a select :

<select id="provincias">
    <option value="130">A Coruña</option>
    <option value="131">Alava</option>
    <option value="132">Albacete</option>
</select>

Answer 1

You do something like this using jQuery.map()

 var data = { "ES": { "130": { "code": "A Coruсa", "name": "A Coruña" }, "131": { "code": "Alava", "name": "Alava" }, "132": { "code": "Albacete", "name": "Albacete" } } }; // generate dropddown $('<select/>', { // setting id attribute id: 'provincias', // setting html content, iterating over JSON to add options html: $.map(data.ES,function(v,i) { // creating otions return $('<option/>', { // setting value as index in json value: i, // setting text content text: v.name }) }) //appending the generated dropdown to the body }).appendTo('body'); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 

Answer 2

You can make use of recursion:

 var data = { "ES": { "130": { "code": "A Coruсa", "name": "A Coruña" }, "131": { "code": "Alava", "name": "Alava" }, "132": { "code": "Albacete", "name": "Albacete" } } }; function setOptions(data) { // get data in the args var option = ''; // create a var to hold the options to be created. for (key in data) { // use for in loop to get the key and values if (data[key].constructor === Object) { // check if data is an object option += '<option value="' + key + '">' + data[key].name + '</option>'; // create option setOptions(data[key]); // pass the object again in the same function to get the "name" value. } } document.getElementById('provincias').innerHTML = option; // finally push in the dom. } setOptions(data.ES); // pass the data here, we're targeting ES5 

 <select id="provincias"> </select>