Does jQuery have built in JSON support or must I use a plugin like jquery.json-1.3.min.js ?
Projects In JavaScript & JQueryTo load JSON data using jQuery, use the getJSON() and ajax() method. The jQuery. getJSON( ) method loads JSON data from the server using a GET HTTP request. data − This optional parameter represents key/value pairs that will be sent to the server.
Json: JSON is a text format that is completely language independent. JQuery:It is a fast and minified JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.
The jQuery library has a full suite of Ajax capabilities. The functions and methods therein allow us to load data from the server without a browser page refresh.
parseJSON( json )Returns: String or Number or Object or Array or Booleanversion deprecated: 3.0. Description: Takes a well-formed JSON string and returns the resulting JavaScript value.
You can also use $.ajax and set the dataType option to "json":
$.ajax({
url: "script.php",
global: false,
type: "POST",
data: ({id : this.getAttribute('id')}),
dataType: "json",
success: function(json){
alert(json.foo);
}
}
);
Also, $.get and $.post have an optional fourth parameter that allows you to set the data type of the response, e.g.:
$.postJSON = function(url, data, callback) {
$.post(url, data, callback, "json");
};
$.getJSON = function(url, data, callback) {
$.get(url, data, callback, "json");
};
Yes, absolutely it does. You can do something like:
$.getJSON('/foo/bar/json-returning-script.php', function(data) {
// data is the JSON object returned from the script.
});
jQuery's JSON support is simplistic, throwing caution to the wind. I've used $.ajax
and then parse the response text with the json.org javascript library. It lexically parses to avoid using eval()
and possibly executing arbitrary code.
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