关于变量与循环语句的问题
各位大牛，消息想问个关于AJAX与PHP的问题，现在碰到这样的一个情况
我希望前端页面在点击某标签的时候，在下方可以显示我关于上方点击的标签进行关联的资料，代码如下
index.php
<html><br /><head><br /><script src="clienthint.js"></script> <br /></head><br /><br /><body><br /><br /><form> <br />First Name:<br /><br /><br /><?php<br /><br /> echo "<a>";<br /> echo "<i class=\"dapei_partleft\"></i>";<br /> echo "<span class=\"dapei_partmiddle\" title='teswt' name='test' onclick=\"showHint(1)\">test</span>";<br /> echo "<i class=\"dapei_partright\"></i>";<br /> echo " </a>";<br /> echo "<a>";<br /> echo "<i class=\"dapei_partleft\"></i>";<br /> echo "<span class=\"dapei_partmiddle\" title='teswt1' name='test1' onclick=\"showHint(2)\">test</span>";<br /> echo "<i class=\"dapei_partright\"></i>";<br /> echo " </a>";<br />?><br /></form><br /><br /><p>Suggestions: <span id="txtHint"></span></p><br /><br /></body><br /></html>
var xmlHttp<br /><br />function showHint(str)<br />{<br />if (str.length==0)<br /> { <br /> document.getElementById("txtHint").innerHTML=""<br /> return<br /> }<br />xmlHttp=GetXmlHttpObject()<br />if (xmlHttp==null)<br /> {<br /> alert ("Browser does not support HTTP Request")<br /> return<br /> } <br />var url="gethint.php"<br />url=url+"?q="+str<br />url=url+"&sid="+Math.random()<br />xmlHttp.onreadystatechange=stateChanged <br />xmlHttp.open("GET",url,true)<br />xmlHttp.send(null)<br />} <br /><br />function stateChanged() <br />{ <br />if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")<br /> { <br /> document.getElementById("txtHint").innerHTML=xmlHttp.responseText <br /><br /> } <br />}<br /><br />function GetXmlHttpObject()<br />{<br />var xmlHttp=null;<br />try<br /> {<br /> // Firefox, Opera 8.0+, Safari<br /> xmlHttp=new XMLHttpRequest();<br /> }<br />catch (e)<br /> {<br /> // Internet Explorer<br /> try<br /> {<br /> xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");<br /> }<br /> catch (e)<br /> {<br /> xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");<br /> }<br /> }<br />return xmlHttp;<br />}<?php<br /> $q=$_GET["q"];<br /><br />//$select ="select * from test where cid='$q'";<br /><br />$hint="for($i=0;$i<2;$i++){......}";<br /><br />//Set output to "no suggestion" if no hint were found<br />//or to the correct values<br />if ($hint == "")<br />{<br />$response="no suggestion";<br />}<br />else<br />{<br />$response=$hint;<br />}<br /><br />//output the response<br />echo $response;<br />?>
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