关于javascript联动菜单的问题,XDJM们帮我看看,急 http://blog.csdn.net/zjyong0123/archive/2005/08/04/445968.aspx 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <option value="0" selected>>>>>请选择<<<<</option> <OPTION value='1' >开发人员</OPTION><OPTION value='2' >测试人员</OPTION><OPTION value='3' >通用 </OPTION>values--->改成value这么简单的我都看了半天,真晕 你既然用的是values集合,那就取values我改了一下,实现你的功能script language="JavaScript">function validate(theform){//alert(document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values);if (document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values == ""){ alert("知识适用人员不能为空"); return false;}else{return true;}}</script><form method="post" name="input" action="#" enctype="multipart/form-data" onSubmit="return validate(this)"><tr><td bgcolor="#F8F8F8" width="20%">知识适用人员:</td><td bgcolor="#FFFFFF"><select name="knowledgeperson"onChange=changelocation(document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values)> <option value="0" selected>>>>>请选择<<<<</option> <OPTION values='1' >开发人员</OPTION><OPTION values='2' >测试人员</OPTION><OPTION values='3' >通用 </OPTION> </select></td></tr><tr><td bgcolor="#F8F8F8" width="20%">知识适用阶段:</td><td bgcolor="#FFFFFF"> <select name="knowledgeuse"> <SCRIPT language=JavaScript> var onecount;onecount=0; subcat = new Array(); subcat[0] = new Array(1,'全部阶段'); subcat[1] = new Array(1,'可行性分析阶段'); subcat[2] = new Array(1,'需求分析阶段'); subcat[3] = new Array(1,'概要设计阶段'); subcat[4] = new Array(1,'详细设计阶段'); subcat[5] = new Array(1,'编码调试阶段'); subcat[6] = new Array(1,'单元测试阶段'); subcat[7] = new Array(1,'其它'); subcat[8] = new Array(2,'全部阶段'); subcat[9] = new Array(2,'可行性分析阶段'); subcat[10] = new Array(2,'测试计划阶段'); subcat[11] = new Array(2,'测试设计阶段'); subcat[12] = new Array(2,'测试实施阶段'); subcat[13] = new Array(2,'其它'); subcat[14] = new Array(3,'全部阶段'); onecount=15; function changelocation(locationid) { document.input.knowledgeuse.length = 0; var locationid=locationid; var i,flag=0; for (i=0;i < onecount; i++) { if (subcat[i][0] == locationid) { document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option(subcat[i][1]); flag=1; } } if (flag==0) {document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option('>>>>请先选择知识适用人员<<<<'); } }</SCRIPT> <option value="" selected>>>>>请先选择知识适用人员<<<<</option> </select></td></tr><input type="submit" name="topicsubmit" value="提交新知识" tabindex="5"></form> to Fibona(Fibona):你给的代码我试了不行啊,没提示了,怎么解决?谢了 <script language="JavaScript">function validate(theform){if (document.input.knowledgeperson.value == ""){ alert("知识适用人员不能为空"); return false;}else{return true;}}</script><form method="post" name="input" action="" enctype="multipart/form-data" onSubmit="return validate(this)"><tr><td bgcolor="#F8F8F8" width="20%">知识适用人员:</td><td bgcolor="#FFFFFF"><select name="knowledgeperson" onChange=changelocation(this.value)> <option value="" selected>>>>>请选择<<<<</option> <OPTION value='1' >开发人员</OPTION><OPTION value='2' >测试人员</OPTION><OPTION value='3' >通用</OPTION><SCRIPT language=JavaScript>var onecount;onecount=0;subcat = new Array();subcat[0] = new Array(1,'全部阶段');subcat[1] = new Array(1,'可行性分析阶段');subcat[2] = new Array(1,'需求分析阶段');subcat[3] = new Array(1,'概要设计阶段');subcat[4] = new Array(1,'详细设计阶段');subcat[5] = new Array(1,'编码调试阶段');subcat[6] = new Array(1,'单元测试阶段');subcat[7] = new Array(1,'其它');subcat[8] = new Array(2,'全部阶段');subcat[9] = new Array(2,'可行性分析阶段');subcat[10] = new Array(2,'测试计划阶段');subcat[11] = new Array(2,'测试设计阶段');subcat[12] = new Array(2,'测试实施阶段');subcat[13] = new Array(2,'其它');subcat[14] = new Array(3,'全部阶段');onecount=15;function changelocation(locationid){document.input.knowledgeuse.length = 0;var locationid=locationid;var i,flag=0;for (i=0;i < onecount; i++){if (subcat[i][0] == locationid){document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option(subcat[i][1]);flag=1;}}if (flag==0){document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option('>>>>请先选择知识适用人员<<<<');}}</SCRIPT></select></td></tr><tr><td bgcolor="#F8F8F8" width="20%">知识适用阶段:</td><td bgcolor="#FFFFFF"> <select name="knowledgeuse"> <option value="" selected>>>>>请先选择知识适用人员<<<<</option> </select></td></tr><input type="submit" name="topicsubmit" value="提交新知识" tabindex="5"></form>*****************主要是values笔误,改一下即可 求高人解释一段代码!!! FF浏览器图片不能滚动,IE正常 javascript中的for/in用法 怎样用javascript获取键盘输入的asc码值? 有关window.print()的问题,非常简单呦 有没有写好的判断输入是否为数字的函数? up有分!加入字符的问题! 怎么样可以得到帧中所加载的文件的名称 event.offsetX和event.clientX的区别 juery中的.text()使用后标签消失了 function函数如何传入一个参数,并返回这个参数。 请问错在哪里?
<OPTION value='1' >开发人员</OPTION><OPTION value='2' >测试人员</OPTION><OPTION value='3' >通用 </OPTION>values--->改成value
这么简单的我都看了半天,真晕
我改了一下,实现你的功能
script language="JavaScript">function validate(theform)
{//alert(document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values);if (document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values == "")
{
alert("知识适用人员不能为空");
return false;
}else{
return true;
}
}
</script>
<form method="post" name="input" action="#" enctype="multipart/form-data" onSubmit="return validate(this)">
<tr>
<td bgcolor="#F8F8F8" width="20%">知识适用人员:</td>
<td bgcolor="#FFFFFF"><select name="knowledgeperson"onChange=changelocation(document.input.knowledgeperson.options[document.input.knowledgeperson.selectedIndex].values)>
<option value="0" selected>>>>>请选择<<<<</option>
<OPTION values='1' >开发人员</OPTION><OPTION values='2' >测试人员</OPTION><OPTION values='3' >通用 </OPTION>
</select></td>
</tr>
<tr>
<td bgcolor="#F8F8F8" width="20%">知识适用阶段:</td>
<td bgcolor="#FFFFFF"> <select name="knowledgeuse">
<SCRIPT language=JavaScript>
var onecount;onecount=0;
subcat = new Array();
subcat[0] = new Array(1,'全部阶段');
subcat[1] = new Array(1,'可行性分析阶段');
subcat[2] = new Array(1,'需求分析阶段');
subcat[3] = new Array(1,'概要设计阶段');
subcat[4] = new Array(1,'详细设计阶段');
subcat[5] = new Array(1,'编码调试阶段');
subcat[6] = new Array(1,'单元测试阶段');
subcat[7] = new Array(1,'其它');
subcat[8] = new Array(2,'全部阶段');
subcat[9] = new Array(2,'可行性分析阶段');
subcat[10] = new Array(2,'测试计划阶段');
subcat[11] = new Array(2,'测试设计阶段');
subcat[12] = new Array(2,'测试实施阶段');
subcat[13] = new Array(2,'其它');
subcat[14] = new Array(3,'全部阶段');
onecount=15;
function changelocation(locationid)
{
document.input.knowledgeuse.length = 0;
var locationid=locationid;
var i,flag=0;
for (i=0;i < onecount; i++)
{
if (subcat[i][0] == locationid)
{
document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option(subcat[i][1]);
flag=1;
}
}
if (flag==0)
{document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option('>>>>请先选择知识适用人员<<<<');
}
}</SCRIPT>
<option value="" selected>>>>>请先选择知识适用人员<<<<</option>
</select></td>
</tr>
<input type="submit" name="topicsubmit" value="提交新知识" tabindex="5">
</form>
{
if (document.input.knowledgeperson.value == "")
{
alert("知识适用人员不能为空");
return false;
}else{
return true;
}
}
</script>
<form method="post" name="input" action="" enctype="multipart/form-data" onSubmit="return validate(this)">
<tr>
<td bgcolor="#F8F8F8" width="20%">知识适用人员:</td>
<td bgcolor="#FFFFFF"><select name="knowledgeperson" onChange=changelocation(this.value)>
<option value="" selected>>>>>请选择<<<<</option>
<OPTION value='1' >开发人员</OPTION><OPTION value='2' >测试人员</OPTION><OPTION value='3' >通用</OPTION><SCRIPT language=JavaScript>var onecount;onecount=0;subcat = new Array();subcat[0] = new Array(1,'全部阶段');subcat[1] = new Array(1,'可行性分析阶段');subcat[2] = new Array(1,'需求分析阶段');subcat[3] = new Array(1,'概要设计阶段');subcat[4] = new Array(1,'详细设计阶段');subcat[5] = new Array(1,'编码调试阶段');subcat[6] = new Array(1,'单元测试阶段');subcat[7] = new Array(1,'其它');subcat[8] = new Array(2,'全部阶段');subcat[9] = new Array(2,'可行性分析阶段');subcat[10] = new Array(2,'测试计划阶段');subcat[11] = new Array(2,'测试设计阶段');subcat[12] = new Array(2,'测试实施阶段');subcat[13] = new Array(2,'其它');subcat[14] = new Array(3,'全部阶段');onecount=15;function changelocation(locationid){document.input.knowledgeuse.length = 0;var locationid=locationid;var i,flag=0;for (i=0;i < onecount; i++){if (subcat[i][0] == locationid){document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option(subcat[i][1]);flag=1;}}if (flag==0){document.input.knowledgeuse.options[document.input.knowledgeuse.length] = new Option('>>>>请先选择知识适用人员<<<<');}}</SCRIPT></select></td>
</tr>
<tr>
<td bgcolor="#F8F8F8" width="20%">知识适用阶段:</td>
<td bgcolor="#FFFFFF"> <select name="knowledgeuse">
<option value="" selected>>>>>请先选择知识适用人员<<<<</option>
</select></td>
</tr>
<input type="submit" name="topicsubmit" value="提交新知识" tabindex="5">
</form>*****************
主要是values笔误,改一下即可