What is the best practice for parsing remote content with jQuery?

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时光说笑 2020-11-27 03:21
Following a jQuery ajax call to retrieve an entire XHTML document, what is the best way to select specific elements from the resulting string? Perhaps there is a library or
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日久生厌 (楼主)
2020-11-27 04:01
Inspired from this answer, but with deferred:
function fetchDoc(url) {
  var dfd;
  dfd = $.Deferred();

  $.get(url).done(function (data, textStatus, jqXHR) {

    var $iframe = $('').appendTo('body');
    var $doc = $iframe.contents();
    var doc = $doc[0];

    $iframe.load(function() {
      dfd.resolveWith(doc, [data, textStatus, jqXHR]);
      return $iframe.remove();
    });
    doc.open();
    doc.write(data);

    return doc.close();
  }).fail(dfd.reject);

  return dfd.promise();
};
</code></pre>

<p>And smoke it with:</p>

<pre><code>fetchDoc('/foo.html').done(function (data, textStatus, jqXHR) {
  alert($('title', this).text());
});
</code></pre>

<p>LIVE DEMO (click 'Run')</p>
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