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112 lines
No EOL
4.7 KiB
HTML
112 lines
No EOL
4.7 KiB
HTML
<!DOCTYPE html>
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<html lang='en'><head>
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<meta charset="utf-8" /><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>
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<div data-role="page">
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<div data-role="header">
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<h1>jQuery.getJSON()</h1>
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</div>
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<div data-role="content" data-theme="c" id="jQuery.getJSON1">
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<h2 class="jq-clearfix roundTop section-title">
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<span class="name">jQuery.getJSON( url, [ data ], [ callback(data, textStatus) ] )</span> <span class="returns">Returns: <a class="return" href="http://docs.jquery.com/Types#XMLHttpRequest">XMLHttpRequest</a></span>
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</h2>
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<div class=" entry-details">
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<p class="desc"><strong>Description: </strong>Load JSON-encoded data from the server using a GET HTTP request.</p>
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<ul class="signatures"><li class="signature" id="jQuery.getJSON-url-data-callbackdata, textStatus">
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<h4 class="name">
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<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>jQuery.getJSON( url, [ data ], [ callback(data, textStatus) ] )</h4>
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<p class="arguement"><strong>url</strong>A string containing the URL to which the request is sent.</p>
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<p class="arguement"><strong>data</strong>A map or string that is sent to the server with the request.</p>
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<p class="arguement"><strong>callback(data, textStatus)</strong>A callback function that is executed if the request succeeds.</p>
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</li></ul>
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<div class="longdesc">
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<p>This is a shorthand Ajax function, which is equivalent to:</p>
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<pre>$.ajax({
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url: <em>url</em>,
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dataType: 'json',
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data: <em>data</em>,
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success: <em>success</em>
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});
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</pre>
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<p>The callback is passed the returned data, which will be a JavaScript object or array as defined by the JSON structure and parsed using the <code><a href="/jQuery.parseJSON">$.parseJSON()</a></code> method.</p>
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<p><strong>Note:</strong> For details on the JSON format, see <a href="http://json.org/">http://json.org/</a>.</p>
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<p>Most implementations will specify a success handler:</p>
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<pre>$.getJSON('ajax/test.json', function(data) {
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$('.result').html('<p>' + data.foo + '</p>'
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+ '<p>' + data.baz[1] + '</p>');
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});
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</pre>
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<p>This example, of course, relies on the structure of the JSON file:</p>
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<pre>{
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"foo": "The quick brown fox jumps over the lazy dog.",
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"bar": "ABCDEFG",
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"baz": [52, 97]
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}
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</pre>
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<p>Using this structure, the example inserts the first string and second number from the file onto the page.</p>
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<p>If there is a syntax error in the JSON file, the request will usually fail silently. Avoid frequent hand-editing of JSON data for this reason.</p>
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<p>If the specified URL is on a remote server, the request is treated as JSONP instead. See the discussion of the <code>jsonp</code> data type in <code><a href="/jQuery.ajax">$.ajax()</a></code> for more details.</p>
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</div>
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<h3>Examples:</h3>
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<div id="entry-examples" class="entry-examples">
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<div id="example-0">
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<h4>Example: <span class="desc">Loads the four most recent cat pictures from the Flickr JSONP API.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>img{ height: 100px; float: left; }</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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<div id="images">
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</div>
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<script>$.getJSON("http://api.flickr.com/services/feeds/photos_public.gne?tags=cat&tagmode=any&format=json&jsoncallback=?",
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function(data){
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$.each(data.items, function(i,item){
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$("<img/>").attr("src", item.media.m).appendTo("#images");
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if ( i == 3 ) return false;
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});
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});</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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<div id="example-1">
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<h4>Example: <span class="desc">Load the JSON data from test.js and access a name from the returned JSON data.</span>
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</h4>
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<pre><code class="example">$.getJSON("test.js", function(json){
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alert("JSON Data: " + json.users[3].name);
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});</code></pre>
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</div>
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<div id="example-2">
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<h4>Example: <span class="desc">Load the JSON data from test.js, passing along additional data, and access a name from the returned JSON data.</span>
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</h4>
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<pre><code class="example">$.getJSON("test.js", { name: "John", time: "2pm" }, function(json){
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alert("JSON Data: " + json.users[3].name);
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});</code></pre>
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</div>
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<div id="example-3">
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<h4>Example: <span class="desc">List the result of a consultation of pages.php in HTML as an array. By Manuel Gonzalez.</span>
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</h4>
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<pre><code class="example">
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var id=$("#id").attr("value");
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$.getJSON("pages.php",{id:id},dates);
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function dates(datos) {
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$("#list").html("Name:"+datos[1].name+"<br>"+"Last Name:"+datos[1].lastname+"<br>"+"Address:"+datos[1].address);
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}
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</code></pre>
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</div>
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</div>
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</div>
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</div>
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</div>
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</body></html> |