How to transform data into array with JSON?

Question

How to transform data into array with JSON?

Asked 9 years, 3 months ago

Viewed 4,171 times

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I have to get the data that are being accumulated in the variable valore and turn them into an array so you can catch them using HttpRequest in an HTML page. How do I do this?

// Classe para chamar o JSON.
function json(){
	var qtd;
	var retorno;

	// Resgatar valores.
	json.prototype.resgatarValores = function(){
		$('#resultado').html('Carregando dados...');

		// Estrutura de resultado.
		$.getJSON('/webpro/webadm/lncidjson', function(data){
			this.qtd = data.usuarios.length - 1;
			this.valore = '';
			this.label = '';

			for (i = 0; i < this.qtd; i++){
				if(i == (this.qtd - 1)) {
					this.valore += data.usuarios[i].valor;
					this.label += data.usuarios[i].descr;
				} 
				else {
					this.valore += data.usuarios[i].valor + ',';
					this.label += data.usuarios[i].descr + ',';
				}
			}

			$('#valor').html(this.valore);
			$('#label').html(this.label);
		});

	}

}

// Objeto.
var obj = new json();
obj.resgatarValores();

To turn an object into json you don’t need to create a class, javascript already does it natively.

– Marcelo Aymone

2015/03/16 at 14:44
http://answall.com/q/42809/14674 , http://answall.com/q/5656/14674

– Franchesco

2015/03/16 at 14:44
Values are not yet an array they are only assigned to the variable.

– nardo_bruxo

2015/03/16 at 14:47
You can use native methods to transform (parse) the information into a JSON. var seuJson = JSON.parse(valore);

– user20212

2015/03/16 at 15:16
Depending on how your object looks of course, if you don’t need to format it to parse.

– Luan Fagundes

2015/03/25 at 02:03

3 answers

3

//obj.resgatarValores();
var obj= [{nome:"Marcelo",idade:20},{nome:"Teste",idade:90}];

var b =JSON.stringify(obj);
document.writeln(b)

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by Jhonatan Mark • 21 points · Answer 1 · 2015-03-17T12:01:30+00:00

If you are using JQUERY... Your answer is in the documentation :

http://api.jquery.com/jQuery.parseJSON/

var obj = jQuery.parseJSON( '{ "name": "John" }' );
alert( obj.name === "John" );

by Leandrovboas • 91 points · Answer 2 · 2016-06-14T13:22:08+00:00

You can do this conversion in the web layer, as presented by user3120449, as do in the backend depending on the language used, in . NET we have the class Javascriptserializer that performs the work.

    var keyValues = new Dictionary<string, string>
           {
               { "emailSend", textBox1.Text },
               { "toEmail", textBox2.Text }
           };

    JavaScriptSerializer js = new JavaScriptSerializer();
    string json = js.Serialize(keyValues);
    MessageBox.Show(json);