菜鸟学堂在线工具

源代码

<!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="//apps.bdimg.com/libs/jqueryui/1.10.4/css/jquery-ui.min.css">
<script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="//apps.bdimg.com/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<link rel="stylesheet" href="jqueryui/style.css">
<style>
  .ui-autocomplete-loading {
    background: white url('images/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( "/try/jqueryui/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>

运行结果 在线运行