Created
November 25, 2015 19:34
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Auto-complete dropdown list by JQuery
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>jQuery UI Autocomplete - Combobox</title> | |
| <link rel="stylesheet" href="https:///code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css"> | |
| <script src="https://code.jquery.com/jquery-1.10.2.js"></script> | |
| <script src="https:///code.jquery.com/ui/1.11.4/jquery-ui.js"></script> | |
| <style> | |
| .custom-combobox { | |
| position: relative; | |
| display: inline-block; | |
| } | |
| .custom-combobox-toggle { | |
| position: absolute; | |
| top: 0; | |
| bottom: 0; | |
| margin-left: -1px; | |
| padding: 0; | |
| } | |
| .custom-combobox-input { | |
| margin: 0; | |
| padding: 5px 10px; | |
| } | |
| </style> | |
| <script> | |
| (function( $ ) { | |
| $.widget( "custom.combobox", { | |
| _create: function() { | |
| this.wrapper = $( "<span>" ) | |
| .addClass( "custom-combobox" ) | |
| .insertAfter( this.element ); | |
| this.element.hide(); | |
| this._createAutocomplete(); | |
| this._createShowAllButton(); | |
| }, | |
| _createAutocomplete: function() { | |
| var selected = this.element.children( ":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" | |
| }); | |
| }, | |
| _createShowAllButton: function() { | |
| var input = this.input, | |
| wasOpen = false; | |
| $( "<a>" ) | |
| .attr( "tabIndex", -1 ) | |
| .attr( "title", "Show All Items" ) | |
| .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(); | |
| // Close if already visible | |
| if ( wasOpen ) { | |
| return; | |
| } | |
| // Pass empty string as value to search for, displaying all results | |
| input.autocomplete( "search", "" ); | |
| }); | |
| }, | |
| _source: function( request, response ) { | |
| var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" ); | |
| response( this.element.children( "option" ).map(function() { | |
| var text = $( this ).text(); | |
| if ( this.value && ( !request.term || matcher.test(text) ) ) | |
| return { | |
| label: text, | |
| value: text, | |
| option: this | |
| }; | |
| }) ); | |
| }, | |
| _removeIfInvalid: function( event, ui ) { | |
| // Selected an item, nothing to do | |
| if ( ui.item ) { | |
| return; | |
| } | |
| // Search for a match (case-insensitive) | |
| var value = this.input.val(), | |
| valueLowerCase = value.toLowerCase(), | |
| valid = false; | |
| this.element.children( "option" ).each(function() { | |
| if ( $( this ).text().toLowerCase() === valueLowerCase ) { | |
| this.selected = valid = true; | |
| return false; | |
| } | |
| }); | |
| // Found a match, nothing to do | |
| if ( valid ) { | |
| return; | |
| } | |
| // Remove invalid value | |
| this.input | |
| .val( "" ) | |
| .attr( "title", value + " didn't match any item" ) | |
| .tooltip( "open" ); | |
| this.element.val( "" ); | |
| this._delay(function() { | |
| this.input.tooltip( "close" ).attr( "title", "" ); | |
| }, 2500 ); | |
| this.input.autocomplete( "instance" ).term = ""; | |
| }, | |
| _destroy: function() { | |
| this.wrapper.remove(); | |
| this.element.show(); | |
| } | |
| }); | |
| })( jQuery ); | |
| $(function() { | |
| $( "#combobox" ).combobox(); | |
| $( "#toggle" ).click(function() { | |
| $( "#combobox" ).toggle(); | |
| }); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div class="ui-widget"> | |
| <label>Your preferred programming language: </label> | |
| <select id="combobox"> | |
| <option value="">Select one...</option> | |
| <option value="ActionScript">ActionScript</option> | |
| <option value="AppleScript">AppleScript</option> | |
| <option value="Asp">Asp</option> | |
| <option value="BASIC">BASIC</option> | |
| <option value="C">C</option> | |
| <option value="C++">C++</option> | |
| <option value="Clojure">Clojure</option> | |
| <option value="COBOL">COBOL</option> | |
| <option value="ColdFusion">ColdFusion</option> | |
| <option value="Erlang">Erlang</option> | |
| <option value="Fortran">Fortran</option> | |
| <option value="Groovy">Groovy</option> | |
| <option value="Haskell">Haskell</option> | |
| <option value="Java">Java</option> | |
| <option value="JavaScript">JavaScript</option> | |
| <option value="JavaScript">Jon Shin</option> | |
| <option value="Lisp">Lisp</option> | |
| <option value="Perl">Perl</option> | |
| <option value="PHP">PHP</option> | |
| <option value="Python">Python</option> | |
| <option value="Ruby">Ruby</option> | |
| <option value="Scala">Scala</option> | |
| <option value="Scheme">Scheme</option> | |
| </select> | |
| </div> | |
| <button id="toggle">Show underlying select</button> | |
| </body> | |
| </html> |
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