Método jQuery ajax()
Ejemplo
Cambia el texto de un elemento <div> usando una solicitud AJAX:
$("button").click(function(){
$.ajax({url: "demo_test.txt", success: function(result){
$("#div1").html(result);
}});
});
Definición y uso
El método ajax() se utiliza para realizar una solicitud AJAX (HTTP asíncrono).
Todos los métodos jQuery AJAX usan el método ajax(). Este método se usa principalmente para solicitudes en las que no se pueden usar los otros métodos.
Sintaxis
$.ajax({name:value, name:value, ... })
Los parámetros especifican uno o más pares de nombre/valor para la solicitud AJAX.
Posibles nombres/valores en la siguiente tabla:
| Name | Value/Description |
|---|---|
| async | A Boolean value indicating whether the request should be handled asynchronous or not. Default is true |
| beforeSend(xhr) | A function to run before the request is sent |
| cache | A Boolean value indicating whether the browser should cache the requested pages. Default is true |
| complete(xhr,status) | A function to run when the request is finished (after success and error functions) |
| contentType | The content type used when sending data to the server. Default is: "application/x-www-form-urlencoded" |
| context | Specifies the "this" value for all AJAX related callback functions |
| data | Specifies data to be sent to the server |
| dataFilter(data,type) | A function used to handle the raw response data of the XMLHttpRequest |
| dataType | The data type expected of the server response. |
| error(xhr,status,error) | A function to run if the request fails. |
| global | A Boolean value specifying whether or not to trigger global AJAX event handles for the request. Default is true |
| ifModified | A Boolean value specifying whether a request is only successful if the response has changed since the last request. Default is: false. |
| jsonp | A string overriding the callback function in a jsonp request |
| jsonpCallback | Specifies a name for the callback function in a jsonp request |
| password | Specifies a password to be used in an HTTP access authentication request. |
| processData | A Boolean value specifying whether or not data sent with the request should be transformed into a query string. Default is true |
| scriptCharset | Specifies the charset for the request |
| success(result,status,xhr) | A function to be run when the request succeeds |
| timeout | The local timeout (in milliseconds) for the request |
| traditional | A Boolean value specifying whether or not to use the traditional style of param serialization |
| type | Specifies the type of request. (GET or POST) |
| url | Specifies the URL to send the request to. Default is the current page |
| username | Specifies a username to be used in an HTTP access authentication request |
| xhr | A function used for creating the XMLHttpRequest object |
Pruébelo usted mismo - Ejemplos
Cómo usar la configuración asíncrona para especificar una solicitud síncrona
Cómo usar la configuración de tipo de datos para especificar el tipo de datos para la solicitud.
Cómo usar la configuración de error para tratar los errores en una solicitud AJAX.