How to use jQuery autocomplete with json file?

Question

I'm learning Ajax and jQuery and trying to use json file as data source. I'm using jQuery UI autocomplete widget to help user select one option. I know I'm terribly off the track.

My json file:

[
    {"iata":"AAC", "name":"El Arish"},
    {"iata":"AAE", "name":"Annabah"},
    {"iata":"AAF", "name":"Apalachicola"},
    {"iata":"AAG", "name":"Arapoti"},
    {"iata":"AAH", "name":"Aachen"},
    {"iata":"AAI", "name":"Arraias"},
    {"iata":"AAJ", "name":"Awaradam"},
    {"iata":"AAK", "name":"Buariki"},
    {"iata":"AAL", "name":"Aalborg"},
    {"iata":"AAM", "name":"Malamala"},
    {"iata":"AAN", "name":"Al Ain"}
]

My JavaScript:

$(document).ready(function () {
    $('#search').autocomplete({
        source: function (request, response) {
            var searchField = $('#search').val();
            var myExp = new RegExp(searchField, "i");
            $.getJSON("beta.json", function (data) {
                var output = '<ul class="searchresults">';
                $.each(data, function (key, val) {
                    if ((val.iata.search(myExp) !== -1) ||
                            (val.name.search(myExp) !== -1)) {
                        output += '<li>';
                        output += '<h2>' + val.iata + '</h2>';
                        output += '<p>' + val.name + '</p>';
                        output += '</li>';
                    }
                });
                output += '</ul>';
                $('#update').html(output);
            });
            )
            });
        }    
    });
});

Neil · Accepted Answer · 2017-03-14 20:46:47Z

3

I fixed some syntax errors and then wrote up this example to really get you jump started.

$( function() {
	$.getJSON("http://neil.computer/stack/beta.json", function(data) {
		autoComplete = [];
		for (var i = 0, len = data.length; i < len; i++) {
			autoComplete.push(data[i].name + ", " + data[i].iata);
		}
		$( "#tags" ).autocomplete({
			source: autoComplete
		});
	});
});

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<div class="ui-widget">
	<label for="tags">Tags: </label>
	<input id="tags">
</div>

edited Mar 14, 2017 at 20:46

answered Mar 14, 2017 at 20:23

Neil

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1 Comment

Hannan Over a year ago

Thank you but I would like to select one of the option. Now it is just giving me an unordered list list when I search and does not allow me to select one of the option. Thats why I select autocomplete widget.

guest271314 · Accepted Answer · 2017-03-14 21:11:27Z

You can push html to an array at request, pass array to response, at .autocomplete("instance")._renderItem create an <li> element with html set to second argument item, .value property, which should be html set within request and passed to response; append <li> to first argument ul, return ul from ._renderItem

  var elem = $("#search");
  $.ajaxSetup({
    context: elem
  });
  elem.autocomplete({
      minLength: 1,
      source: function(request, response) {
        $.getJSON("beta.json")
          .then(function success(data) {
            var searchField = elem.val();
            var myExp = new RegExp(searchField, "i");
            var res = [];
            $.each(data, function(key, val) {
              if ((val.iata.search(myExp) !== -1) ||
                (val.name.search(myExp) !== -1)) {
                res.push("<h2>" + val.iata + "</h2>" + "<p>" + val.name + "</p>")
              }
            });
            response(res);

          }, function error(jqxhr, textStatus, errorThrown) {
            console.log(textStatus, errorThrown) // log `$.ajax` errors
          })
      }
    })
    .autocomplete("instance")._renderItem = function(ul, item) {
      return $("<li>", {
        html: item.value
      }).appendTo(ul)

  };

jsfiddle http://jsfiddle.net/wr1wg5df/11/

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