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jQuery UI教程

jQuery UI 实例 – 自动完成(Autocomplete)

时间:2020/11/2 21:14:25  作者:  来源:  查看:0  评论:0
内容摘要:jQuery UI 实例 - 自动完成(Autocomplete)根据用户输入值进行搜索和过滤,让用户快速找到并从预设值列表中选择。如需了解更多有关 autocomplete 部件的细节,请查看 API 文档 自动完成部件(Autocomplete Widget)。本章节使用到 ...

jQuery UI 实例 - 自动完成(Autocomplete)

根据用户输入值进行搜索和过滤,让用户快速找到并从预设值列表中选择。

如需了解更多有关 autocomplete 部件的细节,请查看 API 文档 自动完成部件(Autocomplete Widget)

本章节使用到 search.php 下载

默认功能

当您在输入域中输入时,自动完成(Autocomplete)部件提供相应的建议。在本实例中,提供了编程语言的建议选项,您可以输入 "ja" 尝试一下,可以得到 Java 或 JavaScript。

数据源是一个简单的 JavaScript 数组,使用 source 选项提供给部件。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 默认功能</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <script>  $(function() {    var availableTags = [      "ActionScript",      "AppleScript",      "Asp",      "BASIC",      "C",      "C++",      "Clojure",      "COBOL",      "ColdFusion",      "Erlang",      "Fortran",      "Groovy",      "Haskell",      "Java",      "JavaScript",      "Lisp",      "Perl",      "PHP",      "Python",      "Ruby",      "Scala",      "Scheme"    ];    $( "#tags" ).autocomplete({      source: availableTags    });  });  </script></head><body> <div class="ui-widget">  <label for="tags">标签:</label>  <input id="tags"></div>  </body></html>

包含重音

autocomplete 域使用自定义的 source 选项来匹配带有重音字符的结果项,即使文本域不包含重音字符也会匹配。但是如果您在文本域中键入了重音字符,则不会显示非重音的结果项。

尝试键入 "Jo",会看到 "John" 和 "J?rn",然后 键入 "J?",只会看到 "J?rn"。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 包含重音</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <script>  $(function() {    var names = [ "Jörn Zaefferer", "Scott González", "John Resig" ];     var accentMap = {      "á": "a",      "ö": "o"    };    var normalize = function( term ) {      var ret = "";      for ( var i = 0; i < term.length; i++ ) {        ret += accentMap[ term.charAt(i) ] || term.charAt(i);      }      return ret;    };     $( "#developer" ).autocomplete({      source: function( request, response ) {        var matcher = new RegExp( $.ui.autocomplete.escapeRegex( request.term ), "i" );        response( $.grep( names, function( value ) {          value = value.label || value.value || value;          return matcher.test( value ) || matcher.test( normalize( value ) );        }) );      }    });  });  </script></head><body> <div class="ui-widget">  <form>  <label for="developer">开发人员:</label>  <input id="developer">  </form></div>  </body></html>

分类

分类的搜索结果。尝试键入 "a" 或 "n"。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 分类</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete-category {    font-weight: bold;    padding: .2em .4em;    margin: .8em 0 .2em;    line-height: 1.5;  }  </style>  <script>  $.widget( "custom.catcomplete", $.ui.autocomplete, {    _renderMenu: function( ul, items ) {      var that = this,        currentCategory = "";      $.each( items, function( index, item ) {        if ( item.category != currentCategory ) {          ul.append( "<li class='ui-autocomplete-category'>" + item.category + "</li>" );          currentCategory = item.category;        }        that._renderItemData( ul, item );      });    }  });  </script>  <script>  $(function() {    var data = [      { label: "anders", category: "" },      { label: "andreas", category: "" },      { label: "antal", category: "" },      { label: "annhhx10", category: "Products" },      { label: "annk K12", category: "Products" },      { label: "annttop C13", category: "Products" },      { label: "anders andersson", category: "People" },      { label: "andreas andersson", category: "People" },      { label: "andreas johnson", category: "People" }    ];     $( "#search" ).catcomplete({      delay: 0,      source: data    });  });  </script></head><body> <label for="search">搜索:</label><input id="search">  </body></html>

组合框(Combobox)

一个由 Autocomplete 和 Button 创建的自定义部件。您可以键入一些字符,来获得基于您的输入过滤的结果,或者使用按钮从完整列表中选择。

该输入是从一个已有的 select 元素中读取,传递给带有自定义的 source 选项的 Autocomplete。

这是一个不被支持的不完美的部件。这里纯粹是为了演示 autocomplete 定制功能。如需了解更多有关该部件工作原理的细节,请点击这里查看相关的 jQuery 文章。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 组合框(Combobox)</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .custom-combobox {    position: relative;    display: inline-block;  }  .custom-combobox-toggle {    position: absolute;    top: 0;    bottom: 0;    margin-left: -1px;    padding: 0;    /* 支持: IE7 */    *height: 1.7em;    *top: 0.1em;  }  .custom-combobox-input {    margin: 0;    padding: 0.3em;  }  </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();             // 如果已经可见则关闭            if ( wasOpen ) {              return;            }             // 传递空字符串作为搜索的值,显示所有的结果            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 ) {         // 选择一项,不执行其他动作        if ( ui.item ) {          return;        }         // 搜索一个匹配(不区分大小写)        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;          }        });         // 找到一个匹配,不执行其他动作        if ( valid ) {          return;        }         // 移除无效的值        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.data( "ui-autocomplete" ).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>您喜欢的编程语言:</label>  <select id="combobox">    <option value="">请选择...</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="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">显示基础的选择框</button>  </body></html>

自定义数据并显示

您可以使用自定义数据格式,并通过简单地重载默认的聚焦和选择行为来显示数据。

尝试键入 "j",或者按向下箭头按键,即可得到一个项目列表。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 自定义数据并显示</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  #project-label {    display: block;    font-weight: bold;    margin-bottom: 1em;  }  #project-icon {    float: left;    height: 32px;    width: 32px;  }  #project-description {    margin: 0;    padding: 0;  }  </style>  <script>  $(function() {    var projects = [      {        value: "jquery",        label: "jQuery",        desc: "the write less, do more, JavaScript library",        icon: "jquery_32x32.png"      },      {        value: "jquery-ui",        label: "jQuery UI",        desc: "the official user interface library for jQuery",        icon: "jqueryui_32x32.png"      },      {        value: "sizzlejs",        label: "Sizzle JS",        desc: "a pure-JavaScript CSS selector engine",        icon: "sizzlejs_32x32.png"      }    ];     $( "#project" ).autocomplete({      minLength: 0,      source: projects,      focus: function( event, ui ) {        $( "#project" ).val( ui.item.label );        return false;      },      select: function( event, ui ) {        $( "#project" ).val( ui.item.label );        $( "#project-id" ).val( ui.item.value );        $( "#project-description" ).html( ui.item.desc );        $( "#project-icon" ).attr( "src", "images/" + ui.item.icon );         return false;      }    })    .data( "ui-autocomplete" )._renderItem = function( ul, item ) {      return $( "<li>" )        .append( "<a>" + item.label + "<br>" + item.desc + "</a>" )        .appendTo( ul );    };  });  </script></head><body> <div id="project-label">选择一个项目(请键入 "j"):</div><img id="project-icon" src="images/transparent_1x1.png" class="ui-state-default" alt=""><input id="project"><input type="hidden" id="project-id"><p id="project-description"></p>  </body></html>

多个值

用法:键入一些字符,比如 "j",可以看到相关的编程语言结果。选择一个值,然后继续键入字符来添加其他的值。

本实例演示如何使用 source 选项和一些事件来实现在一个单一的文本域输入多个自动完成的值。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 多个值</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <script>  $(function() {    var availableTags = [      "ActionScript",      "AppleScript",      "Asp",      "BASIC",      "C",      "C++",      "Clojure",      "COBOL",      "ColdFusion",      "Erlang",      "Fortran",      "Groovy",      "Haskell",      "Java",      "JavaScript",      "Lisp",      "Perl",      "PHP",      "Python",      "Ruby",      "Scala",      "Scheme"    ];    function split( val ) {      return val.split( /,\s*/ );    }    function extractLast( term ) {      return split( term ).pop();    }     $( "#tags" )      // 当选择一个条目时不离开文本域      .bind( "keydown", function( event ) {        if ( event.keyCode === $.ui.keyCode.TAB &&            $( this ).data( "ui-autocomplete" ).menu.active ) {          event.preventDefault();        }      })      .autocomplete({        minLength: 0,        source: function( request, response ) {          // 回到 autocomplete,但是提取最后的条目          response( $.ui.autocomplete.filter(            availableTags, extractLast( request.term ) ) );        },        focus: function() {          // 防止在获得焦点时插入值          return false;        },        select: function( event, ui ) {          var terms = split( this.value );          // 移除当前输入          terms.pop();          // 添加被选项          terms.push( ui.item.value );          // 添加占位符,在结尾添加逗号+空格          terms.push( "" );          this.value = terms.join( ", " );          return false;        }      });  });  </script></head><body> <div class="ui-widget">  <label for="tags">编程语言:</label>  <input id="tags" size="50"></div>  </body></html>

多个值,远程

用法:键入至少两个字符来获取鸟的名称。选择一个值,然后继续键入字符来添加其他的值。

本实例演示如何使用 source 选项和一些事件来实现在一个单一的文本域输入多个自动完成的值。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 多个值,远程</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete-loading {    background: white url('/try/jqueryui/ui-anim_basic_16x16.gif') right center no-repeat;  }  </style>  <script>  $(function() {    function split( val ) {      return val.split( /,\s*/ );    }    function extractLast( term ) {      return split( term ).pop();    }     $( "#birds" )      // 当选择一个条目时不离开文本域      .bind( "keydown", function( event ) {        if ( event.keyCode === $.ui.keyCode.TAB &&            $( this ).data( "ui-autocomplete" ).menu.active ) {          event.preventDefault();        }      })      .autocomplete({        source: function( request, response ) {          $.getJSON( "search.php", {            term: extractLast( request.term )          }, response );        },        search: function() {          // 自定义最小长度          var term = extractLast( this.value );          if ( term.length < 2 ) {            return false;          }        },        focus: function() {          // 防止在获得焦点时插入值          return false;        },        select: function( event, ui ) {          var terms = split( this.value );          // 移除当前输入          terms.pop();          // 添加被选项          terms.push( ui.item.value );          // 添加占位符,在结尾添加逗号+空格          terms.push( "" );          this.value = terms.join( ", " );          return false;        }      });  });  </script></head><body> <div class="ui-widget">  <label for="birds">鸟:</label>  <input id="birds" size="50"></div>  </body></html>

远程 JSONP 数据源

用法:键入至少两个字符来获取鸟的名称。选择一个值,然后继续键入字符来添加其他的值。

本实例演示如何使用 jsonp 来获取数据。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <meta name="viewport" content="width=device-width, initial-scale=1">  <title>jQuery UI Autocomplete - Remote JSONP datasource</title>  <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">    <style>  .ui-autocomplete-loading {    background: white url('/try/jqueryui/ui-anim_basic_16x16.gif') right center no-repeat;  }  </style>  <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>  <script>  $( function() {    function log( message ) {      $( "<div>" ).text( message ).prependTo( "#log" );      $( "#log" ).scrollTop( 0 );    }     $( "#birds" ).autocomplete({      source: function( request, response ) {        $.ajax( {          url: "/try/jqueryui/search.php",          dataType: "jsonp",          data: {            term: request.term          },          success: function( data ) {            response( data );          }        } );      },      minLength: 2,      select: function( event, ui ) {        log( "Selected: " + ui.item.value + " aka " + ui.item.id );      }    } );  } );  </script></head><body> <div class="ui-widget">  <label for="birds">Birds: </label>  <input id="birds"></div> <div class="ui-widget" style="margin-top:2em; font-family:Arial">  Result:  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div></div>  </body></html>

远程数据源

当您在文本域中键入字符时,Autocomplete 部件给出建议结果。在本实例中,当您在文本域中至少键入两个字符时,将显示相关鸟的名称。

在本实例中,数据源是可返回 JSON 数据的服务器端脚本,通过一个简单的 source 选项来指定。另外,minLength 选项设置为 2,避免查询返回太多的结果,select 事件用于显示一些反馈。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 远程数据源</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete-loading {    background: white url('/try/jqueryui/ui-anim_basic_16x16.gif') right center no-repeat;  }  </style>  <script>  $(function() {    function log( message ) {      $( "<div>" ).text( message ).prependTo( "#log" );      $( "#log" ).scrollTop( 0 );    }     $( "#birds" ).autocomplete({      source: "search.php",      minLength: 2,      select: function( event, ui ) {        log( ui.item ?          "Selected: " + ui.item.value + " aka " + ui.item.id :          "Nothing selected, input was " + this.value );      }    });  });  </script></head><body> <div class="ui-widget">  <label for="birds">鸟:</label>  <input id="birds"></div> <div class="ui-widget" style="margin-top:2em; font-family:Arial">  结果:  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div></div>  </body></html>

远程缓存

当您在文本域中键入字符时,Autocomplete 部件给出建议结果。在本实例中,当您在文本域中至少键入两个字符时,将显示相关鸟的名称。

为了提高性能,这里添加了一些本地缓存,其他与远程数据源实例相似。在这里,缓存只保存了一个查询,并可以扩展到缓存多个值,每个条目一个值。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 远程缓存</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete-loading {    background: white url('/try/jqueryui/ui-anim_basic_16x16.gif') right center no-repeat;  }  </style>  <script>  $(function() {    var cache = {};    $( "#birds" ).autocomplete({      minLength: 2,      source: function( request, response ) {        var term = request.term;        if ( term in cache ) {          response( cache[ term ] );          return;        }         $.getJSON( "search.php", request, function( data, status, xhr ) {          cache[ term ] = data;          response( data );        });      }    });  });  </script></head><body> <div class="ui-widget">  <label for="birds">鸟:</label>  <input id="birds"></div>  </body></html>

可滚动的结果

当显示一个长列表的选项时,您可以简单地为 autocomplete 菜单设置 max-height 来防止菜单显示太长。尝试键入 "a" 或 "s" 来获得一个可滚动的长列表的结果。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - 可滚动的结果</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete {    max-height: 100px;    overflow-y: auto;    /* 防止水平滚动条 */    overflow-x: hidden;  }  /* IE 6 不支持 max-height   * 我们使用 height 代替,但是这会强制菜单总是显示为那个高度   */  * html .ui-autocomplete {    height: 100px;  }  </style>  <script>  $(function() {    var availableTags = [      "ActionScript",      "AppleScript",      "Asp",      "BASIC",      "C",      "C++",      "Clojure",      "COBOL",      "ColdFusion",      "Erlang",      "Fortran",      "Groovy",      "Haskell",      "Java",      "JavaScript",      "Lisp",      "Perl",      "PHP",      "Python",      "Ruby",      "Scala",      "Scheme"    ];    $( "#tags" ).autocomplete({      source: availableTags    });  });  </script></head><body> <div class="ui-widget">  <label for="tags">标签:</label>  <input id="tags"></div>  </body></html>

XML 数据

本实例演示如何获取一些 XML 数据,并使用 jQuery 的方法解析它,然后把它提供给 autocomplete 作为数据源。

本实例也可作为解析远程 XML 数据源的参考 - 解析在每次 source 回调请求时发生。

<!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>jQuery UI 自动完成(Autocomplete) - XML 数据</title>  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">  <script src="//code.jquery.com/jquery-1.9.1.js"></script>  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>  <link rel="stylesheet" href="https://jqueryui.com/resources/demos/style.css">  <style>  .ui-autocomplete-loading { background: white url('/try/jqueryui/ui-anim_basic_16x16.gif') right center no-repeat; }  </style>  <script>  $(function() {    function log( message ) {      $( "<div/>" ).text( message ).prependTo( "#log" );      $( "#log" ).attr( "scrollTop", 0 );    }     $.ajax({      url: "/try/jqueryui/london.xmllondon.xml",      dataType: "xml",      success: function( xmlResponse ) {        var data = $( "geoname", xmlResponse ).map(function() {          return {            value: $( "name", this ).text() + ", " +              ( $.trim( $( "countryName", this ).text() ) || "(unknown country)" ),            id: $( "geonameId", this ).text()          };        }).get();        $( "#birds" ).autocomplete({          source: data,          minLength: 0,          select: function( event, ui ) {            log( ui.item ?              "Selected: " + ui.item.value + ", geonameId: " + ui.item.id :              "Nothing selected, input was " + this.value );          }        });      }    });  });  </script></head><body> <div class="ui-widget">  <label for="birds">London 匹配:</label>  <input id="birds"></div> <div class="ui-widget" style="margin-top:2em; font-family:Arial">  结果:  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div></div>  </body></html>



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