search.html

<input id="search" class="ui-corner-all" autocomplete="off" placeholder="Search" accesskey="s">

<style>
  #search-box {
    font-family: 'Helvetica Neue', 'Helvetica Neue', Helvetica, Arial, sans-serif !important;
    width: 35em;
    margin: 0 auto;
  }
  #search-box .ui-widget {
    font-family: 'Helvetica Neue', 'Helvetica Neue', Helvetica, Arial, sans-serif !important;
  }
  input#search {
    color: #444;
    font-size: 105%;
    background: #ebfad4;
    padding: 0.25em 0.5em; margin: 0;
    border: 1px solid #fff; border-top: none;
    width: 100%;
    -moz-border-radius-topright: 0; -webkit-border-radius-top-right: 0; border-top-right-radius: 0;
    -moz-border-radius-topleft: 0; -webkit-border-radius-top-left: 0; border-top-left-radius: 0;
  }
  input#search:focus {
    outline: none;
  }
  input#search.placeholder {
    color: #aaa;
  }
  ul.ui-autocomplete {
    background: #ebfad4 !important;
    font-size: 80%;
    border: 1px solid #fff;
    padding: 0 !important;
    -moz-border-radius-topright: 0; -webkit-border-radius-top-right: 0; border-top-right-radius: 0;
    -moz-border-radius-topleft: 0; -webkit-border-radius-top-left: 0; border-top-left-radius: 0;
    -moz-box-shadow: 0px 1px 2px #666;
    -webkit-box-shadow: 0px 1px 2px #666;
    box-shadow: 0px 1px 2px #666
  }
  ul.ui-autocomplete li.ui-menu-item {
    border-bottom: 1px solid #fff;
  }
  ul.ui-autocomplete li.ui-menu-item:last-child {
    border-bottom: none;
  }
  ul.ui-autocomplete li.ui-menu-item a {
    padding: 0.5em 0.5em;
    -moz-border-radius: 0 !important; -webkit-border-radius: 0 !important; border-radius: 0 !important;
  }
  ul.ui-autocomplete .ui-state-hover {
    color: #222;
    border-color: #fff !important;
    background: #c6fa78 !important;
  }
  ul.ui-autocomplete .ui-state-hover * {
    color: #222;
    cursor: pointer;
  }
  ul.ui-autocomplete li.ui-menu-item p {
    margin: 0 !important; padding: 0 !important; line-height: 1em !important;
    margin-bottom: 0;
  }
  ul.ui-autocomplete li.ui-menu-item p a {
    padding: 0 !important; margin: 0 !important; line-height: 1em !;
    display: inline !important;
  }
  ul.ui-autocomplete li.ui-menu-item em {
    font-style: normal;
    font-size: 85%;
    padding: 0.25em 0.5em;
    background-color: #C9D4B2;
    -moz-border-radius: 0.5em; -webkit-border-radius: 0.5em; border-radius: 0.5em;
    -moz-border-radius: 0.5em; -webkit-border-radius: 0.5em; border-radius: 0.5em;
  }
  ul.ui-autocomplete li.ui-menu-item small {
    font-size: 70%;
  }
  ul.ui-autocomplete li.ui-menu-item .ui-state-hover em {
    background-color: #A7D94C;
  }
</style>

<script>
$(function() {
    $.placeholder();

    var elastic_search_url = "http://search.elasticsearch.org/elastic-search-website/guide,blog/_search";
    var searchRequest = undefined;
    var previousQueryString = "";

		$( "#search" ).autocomplete({
			search: function() {
				if ( this.value.trim() != previousQueryString ) {
					previousQueryString = this.value.trim();
					return true;
				}
				return false;
			},
			source: function( request, response ) {
				if ( searchRequest && searchRequest.readyState < 4 ) {
					searchRequest.abort();
				}
                var q = request.term;
                var re = /[^ *]/;
				searchRequest = $.ajax({
					url: [ elastic_search_url, $.param( { 
                        fields : "title,category,url", 
                        size : 25, 
                        q : q,
                        default_operator: "AND"
                    } )].join("?"),
					dataType: "jsonp",
					success: function( data ) {
						response( $.map( data.hits.hits, function( item ) {
							return {
								label: '<p><strong>' + item.fields.title    + '</strong>' +
								       ' <em>'       + item.fields.category + '</em>'     + '</p>' +
								       '<p><small>'  + item.fields.url      + '</small></p>',
								value: item.fields.title,
								url  : item.fields.url
							}
						}));
					}
				});
			},
			minLength: 2,
			html: true,
			select: function( event, ui ) {
        event.preventDefault();
        ui.item ? document.location.href = ui.item.url : null;
			},
			open: function() {
				$( this ).removeClass( "ui-corner-all" ).addClass( "ui-corner-top" );
			},
			close: function() {
				$( this ).removeClass( "ui-corner-top" ).addClass( "ui-corner-all" );
			}
		});
	});

</script>