高手们来看看问题出在哪？为什么后面的下拉选项没有更新？
<html><head><title></title><metahttp-equiv="Content-Type"content="text/html;charset=g...
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<link rel="stylesheet" type="text/css" href="css/main.css">
<script language="javaScript">
var pmgg = new Array(); //定义一个全局数组变量
function LoadPM()
{
document.myform.pmxz.options.length=1;
<?php
$s1 = mysql_query("SELECT * FROM pmpara");
while($r1 = mysql_fetch_array($s1))
{
echo "pmgg['$r1[pm]']=[];";
echo "document.myform.pmxz.options.add(new Option(\"$r1[pm]\",\"$r1[pm]\"));";
$s2 = mysql_query("SELECT * FROM uprpara where pm='".$r1[pm]."'");
while($r2 = mysql_fetch_array($s2))
{
echo "pmgg['$r1[pm]'].push('$r2[size]');";
}
}
?>
}
function updategg()
{
var varpm = document.myform.pmxz.value;
var newgg;
document.myform.ggxz.options.length=0;
for(var j in pmgg[varpm]) //从数组里面循环取元素出来
{
newgg = new Option(pmgg[varpm][j],pmgg[varpm][j]);
document.myform.ggxz.options.add(newgg);
}
}
</script>
</head>
<body onload="LoadPM()">
<select name="pmxz" onChange="updategg()">
<option value="">请选择品名</option>
</select>
<select name="ggxz">
<option value="">请选择规格</option>
</select> 展开
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<link rel="stylesheet" type="text/css" href="css/main.css">
<script language="javaScript">
var pmgg = new Array(); //定义一个全局数组变量
function LoadPM()
{
document.myform.pmxz.options.length=1;
<?php
$s1 = mysql_query("SELECT * FROM pmpara");
while($r1 = mysql_fetch_array($s1))
{
echo "pmgg['$r1[pm]']=[];";
echo "document.myform.pmxz.options.add(new Option(\"$r1[pm]\",\"$r1[pm]\"));";
$s2 = mysql_query("SELECT * FROM uprpara where pm='".$r1[pm]."'");
while($r2 = mysql_fetch_array($s2))
{
echo "pmgg['$r1[pm]'].push('$r2[size]');";
}
}
?>
}
function updategg()
{
var varpm = document.myform.pmxz.value;
var newgg;
document.myform.ggxz.options.length=0;
for(var j in pmgg[varpm]) //从数组里面循环取元素出来
{
newgg = new Option(pmgg[varpm][j],pmgg[varpm][j]);
document.myform.ggxz.options.add(newgg);
}
}
</script>
</head>
<body onload="LoadPM()">
<select name="pmxz" onChange="updategg()">
<option value="">请选择品名</option>
</select>
<select name="ggxz">
<option value="">请选择规格</option>
</select> 展开
1个回答
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去掉php代码，用浏览器访问页面后点“查看源代码”后将纯html代码贴出来，再看
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