jquery 10 にはいくつかの機能があります。jquery ui の Web サイトからオートコンプリート コンボボックスを取得します: http://jqueryui.com/autocomplete/#combobox
と Andrew Whitaker の回答に参加します。
(function( $ ) {
$.widget( "custom.combobox_with_optgroup", {
_create: function() {
this.wrapper = $( "<span>" )
.addClass( "custom-combobox" )
.insertAfter( this.element );
this.element.hide();
this._createAutocomplete();
this._createShowAllButton();
},
_createAutocomplete: function() {
var selected = this.element.find( ":selected" ),
value = selected.val() ? selected.text() : "";
this.input = $( "<input>" )
.appendTo( this.wrapper )
.val( value )
.attr( "title", "" )
.addClass( "custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left" )
.autocomplete({
delay: 0,
minLength: 0,
source: $.proxy( this, "_source" )
})
.tooltip({
tooltipClass: "ui-state-highlight"
});
this._on( this.input, {
autocompleteselect: function( event, ui ) {
ui.item.option.selected = true;
this._trigger( "select", event, {
item: ui.item.option
});
},
autocompletechange: "_removeIfInvalid"
});
this.input.data("uiAutocomplete")._renderMenu = function(ul, items) {
var self = this,
currentCategory = "";
$.each(items, function(index, item) {
if (item.category != currentCategory) {
if (item.category) {
ul.append("<li class='custom-autocomplete-category'>" + item.category + "</li>");
}
currentCategory = item.category;
}
self._renderItemData(ul, item);
});
};
},
_createShowAllButton: function() {
var input = this.input,
wasOpen = false;
$( "<a>" )
.attr( "tabIndex", -1 )
.attr( "title", "Показать все" )
.tooltip()
.appendTo( this.wrapper )
.button({
icons: {
primary: "ui-icon-triangle-1-s"
},
text: false
})
.removeClass( "ui-corner-all" )
.addClass( "custom-combobox-toggle ui-corner-right" )
.mousedown(function() {
wasOpen = input.autocomplete( "widget" ).is( ":visible" );
})
.click(function() {
input.focus();
if ( wasOpen ) {
return;
}
input.autocomplete( "search", "" );
});
},
_source: function( request, response ) {
var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
response( this.element.find( "option" ).map(function() {
var text = $( this ).text();
if ( this.value && ( !request.term || matcher.test(text) ) )
return {
label: text,
value: text,
option: this,
category: $(this).closest("optgroup").attr("label")
};
}) );
},
_removeIfInvalid: function( event, ui ) {
if ( ui.item ) {
return;
}
var value = this.input.val(),
valueLowerCase = value.toLowerCase(),
valid = false;
this.element.find( "option" ).each(function() {
if ( $( this ).text().toLowerCase() === valueLowerCase ) {
this.selected = valid = true;
return false;
}
});
if ( valid ) {
return;
}
this.input
.val( "" )
.attr( "title", value + " не существует" )
.tooltip( "open" );
this.element.val( "" );
this._delay(function() {
this.input.tooltip( "close" ).attr( "title", "" );
}, 2500 );
this.input.data( "ui-autocomplete" ).term = "";
},
_destroy: function() {
this.wrapper.remove();
this.element.show();
}
});
})( jQuery );