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<head> <style> <!-- .cls1 { position:absolute; left:250px; top:89px; width:216px; height:72px; z-index:1; } .cls2 { position:absolute; left:250px; top:89px; width:95px; height:18px; z-index:2 } input { font-size: 12px; padding-top: 2px; padding-left: 2px;width:127;} //--> </style> </head> <script> <!-- function addOption(pos){ if(event.keyCode==13) { var select_obj = document.getElementById("myselect"); var text_value = document.getElementById("test").value; if (select_obj.length) { for (var i=0;i<select_obj.length;i++) { // 如果已经存在，不添加，直接退出 if (select_obj.options[i].text==text_value) alert("选项已存在，请重新输入"); } } var the_option= new Option(text_value,text_value); select_obj.add(the_option); select_obj.selectedIndex = select_obj.options.length-1 } } //--> </script> <div class="cls1" style="clip: rect(3 280 21 110)"> <select name="myselect" style="width:127" onchange="document.getElementById('test').value=this.value"> <option value=1>1</option> <option value=2>2</option> <option value=3>3</option> </select> </div> <div class="cls2"> <input type="text" name="test" onkeydown="addOption()" size="20" style="width: 127; height: 23"> </div> </body> </html> |
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