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</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">
<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>

运行结果 在线运行