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Other References

CSSStyleDeclaration JS Conversion


Método JavaScript JSON stringify()


Ejemplo

Stringify un objeto de JavaScript:

var obj = { "name":"John", "age":30, "city":"New York"};
var myJSON = JSON.stringify(obj);
document.getElementById("demo").innerHTML = myJSON;

Más ejemplos de "Pruébelo usted mismo" a continuación.


Definición y uso

El método JSON.stringify() convierte objetos de JavaScript en cadenas.

Al enviar datos a un servidor web, los datos deben ser una cadena.


Compatibilidad con navegador

Los números en la tabla especifican la primera versión del navegador que soporta totalmente este método.

Method
stringify() 4.0 8.0 3.5 4.0 11.5

Sintaxis

JSON.stringify(obj, replacer, space)

Valores paramétricos

Parameter Description
obj Required. The value to convert to a string
replacer Optional. Either a function or an array used to transform the result. The replacer is called for each item.
space Optional. Either a String or a Number.
A string to be used as white space (max 10 characters),
or a Number, from 0 to 10, to indicate how many space characters to use as white space.


Detalles técnicos

Valor de retorno: Una cuerda
Versión de JavaScript: ECMAScript 5

Más ejemplos

Ejemplo

Usando la función de reemplazo :

/*replace the value of "city" to upper case:*/
var obj = { "name":"John", "age":"39", "city":"New York"};
var text = JSON.stringify(obj, function (key, value) {
  if (key == "city") {
    return value.toUpperCase();
  } else {
    return value;
  }
});

Ejemplo

Usando el parámetro de espacio :

/*Insert 10 space characters for each white space:*/
var obj = { "name":"John", "age":"39", "city":"New York"};
var text = JSON.stringify(obj, null, 10);

Ejemplo

Usando el parámetro de espacio :

/*Insert the word SPACE for each white space:*/
var obj = { "name":"John", "age":"39", "city":"New York"};
var text = JSON.stringify(obj, null, "SPACE");

páginas relacionadas

Tutorial de JSON: Introducción a JSON