ajax获取text的值为空怎么回事呢？<input id="birds">取出的值是空 - Web 开发 / Ajax
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title></title><script src="./jQuery UI Autocomplete - Remote datasource_files/jquery-1.5.1.js"></script><script src="./jQuery UI Autocomplete - Remote datasource_files/jquery.ui.core.js"></script><script src="./jQuery UI Autocomplete - Remote datasource_files/jquery.ui.widget.js"></script><script src="./jQuery UI Autocomplete - Remote datasource_files/jquery.ui.position.js"></script><script src="./jQuery UI Autocomplete - Remote datasource_files/jquery.ui.autocomplete.js"></script><META HTTP-EQUIV="Pragma" CONTENT="no-cache"><META HTTP-EQUIV="Cache-Control" CONTENT="no-cache"><META HTTP-EQUIV="Expires" CONTENT="0"><link rel="stylesheet" href="demos.css"><link rel="stylesheet" href="jquery.ui.all.css"><style> .ui-autocomplete-loading { background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat; }</style><!--<script type="text/javascript"> $(function () { $('input:text:first').focus(); var $inp = $(':input'); $inp.bind('keydown', function (e) { var key = e.which; //window.alert(e.ctrlKey); if (key == 13||(e.ctrlKey&&key == 13)) { e.preventDefault(); if(this.type=="submit") { document.forms[0].submit(); } var nxtIdx = $inp.index(this) + 1; $(":input:eq(" + nxtIdx + ")").focus(); } });});</script>--> <script type="text/javascript">$(function(){ $("#myform input:text").keypress(function(e) { if (e.which == 13)//判断所按是否回车键 { var inputs = $("#myform").find(":text");//获取表单中的所有输入框 var idx = inputs.index(this);//获取当前焦点输入框所处的位置 if (idx == inputs.length - 1)// 判断是否是最后一个输入框 { // if (confirm("最后一个输入框已经输入,是否提交?")) //用户确认 $("#myform").submit(); //提交表单 } else { inputs[idx + 1].focus();//设置焦点 inputs[idx + 1].select();//选中文字 } return false;//取消默认的提交行为 } });});</script><script> $(function() { function log( message ) { $( "<div/>" ).text( message ).prependTo( "#log" ); $( "#log" ).attr( "scrollTop", 0 ); } var textval = $("#birds").attr("value");// alert(textval); $( "#birds" ).autocomplete({ //source: "search.php", source: 'search.php?ts='+new Date().getTime()+'&k='+encodeURIComponent(textval), //source: 'search.php?ts='+new Date().getTime()+'&k='+encodeURIComponent(ui.item.value), minLength: 2, select: function( event, ui ) { log( ui.item ? "Selected: " + ui.item.value + " aka " + ui.item.id : "Nothing selected, input was " + this.value ); } }); //$( "#birds1" ).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><table width="736" height="127" border="1"><form method="post" action="" id="myform"><div class="demo"> <tr> <td colspan="4">方剂类型：</td> </tr> <tr> <td colspan="2"> <input type="radio" name="radiobutton" value="radiobutton" />茶剂 </td> <td width="107"> <input type="radio" name="radiobutton" value="radiobutton" />药剂 </td> <td width="437"> <input type="radio" name="radiobutton" value="radiobutton" />汤剂 </td> </tr> <tr> <td colspan="4">查询药剂：</td> </tr> <tr> <td width="168"> <div class="ui-widget"> <label for="birds">Birds: </label> <input id="birds"> </div> </label> </td> <td colspan="2"> <input type="text" name="textfield2" size="6" />克 </td> <td> <input name="Input" type="button" value="确认" /> </td> </tr> </form> </div> </table><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>