function initBody(){ var ListMsg=document.bysteelid.steelidArrS; for(I=0;I<standardArr.length;I++){ tmpValue=standardArr[I]; ListMsg.options[ListMsg.length]=new Option(tmpValue,tmpValue) } for(I=0;I<steelidArr.length;I++){ tmpValue=steelidArr[I]; ListMsg.options[ListMsg.length]=new Option(tmpValue,tmpValue) } }
我想用已有的两个函数, function initBody(){ var obj=""; SelectStandard(obj); SelectSteelID(obj); }但是obj传入 SelectStandard(obj);和 SelectSteelID(obj);后又执行了obj.value,怎样定义一个值为""的obj,使obj.value="";而不是obj="".
<script language="javascript">
var standardArr= new Array();
standardArr[0]="GB-1";
standardArr[1]="厂标-1";
standardArr[2]="fdf";
standardArr[3]="asdfa";
standardArr[4]="rg";
standardArr[5]="sdf";
standardArr[6]="3.2";
standardArr[7]="4";
standardArr[8]="32";
var steelidArr= new Array();
steelidArr[0]="刚类";
steelidArr[1]="1Cr18Ni9Ti";
steelidArr[2]="FeCr";
</script><html>
<head>
<title> 钢铁材料的力学性能指标</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head><body onLoad="javascript:initBody()" background="../image/bg.gif">
<div align="center" ><font color="#0000FF" size="+2" >钢铁材料的力学性能指标 </font></div>
<font size="+2">查询:</font>
<table name="thetable" width="100%" border="1" align="center" cellpadding="5%" cellspacing="5%" >
<tr>
<form name="bystandard" action="query.jsp" method="post">
<td width="25%" align="right"><input type="submit" value="按标准查询:"></td>
<td width="34%">模糊输入<input name="standard" onchange="javascript:SelectStandard(this)"> 然后:</td>
<td width="41%">选择<select onChange="javascript:UpdateStan(this)" name="standardArrS" >
<option value="">-全部-</option>
</select>
</td>
</form>
</tr>
<tr>
<form name="bysteelid" action="query.jsp" method="post">
<td align="right"><input type="submit" value="按特殊钢号查询:"></td>
<td>模糊输入<input name="steelid" onchange="javascript:SelectSteelID(this)"> 然后:</td>
<td>选择<select onChange="javascript:UpdateSteel(this)" name="steelidArrS" >
<option value="">-全部-</option>
</select>
</td>
</form>
</tr>
</table>
<font size="+2"><a href="addnew.jsp">添加新纪录</a></font>
</body>
</html>
<script language="javascript">
//var standardArr= new Array();
//standardArr[0]="ABC123"
//standardArr[1]="BCD234"function SelectStandard(obj){
var ListMsg=document.bystandard.standardArrS;
ListMsg.length=0;
ListMsg.options[0]=new Option("-全部-","")
var k=1;
var tmpValue="";
if(obj.value!=""){
for(I=0;I<standardArr.length;I++){
if(standardArr[I].indexOf(obj.value)!=-1){
tmpValue=standardArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
}
}
else{
for(I=0;I<standardArr.length;I++){
tmpValue=standardArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
}
ListMsg.selectedIndex=0;
}
</script>
<script language="javascript">
//var steelidArr= new Array();
//steelidArr[0]="ABC123"
//steelidArr[1]="BCD234"function SelectSteelID(obj){
var ListMsg=document.bysteelid.steelidArrS;
ListMsg.length=0;
ListMsg.options[0]=new Option("-全部-","")
var k=1;
var tmpValue="";
if(obj.value!=""){
for(I=0;I<steelidArr.length;I++){
if(steelidArr[I].indexOf(obj.value)!=-1&&steelidArr[I]!="刚类"){
tmpValue=steelidArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
}
}
else{
for(I=0;I<steelidArr.length;I++){
if(steelidArr[I]!="刚类"){
tmpValue=steelidArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
}
}
ListMsg.selectedIndex=0;
}function UpdateStan(obj){
if(obj.value!=""){
document.bystandard.standard.value=obj.value;
}
else{}
}function UpdateSteel(obj){
if(obj.value!=""){
document.bysteelid.steelid.value=obj.value;
}
else{}
}function initBody(){
for(I=0;I<standardArr.length;I++){
tmpValue=standardArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
for(I=0;I<steelidArr.length;I++){
tmpValue=steelidArr[I];
ListMsg.options[k]=new Option(tmpValue,tmpValue)
k++
}
}
</script>
var ListMsg=document.bysteelid.steelidArrS;
for(I=0;I<standardArr.length;I++){
tmpValue=standardArr[I];
ListMsg.options[ListMsg.length]=new Option(tmpValue,tmpValue)
}
for(I=0;I<steelidArr.length;I++){
tmpValue=steelidArr[I];
ListMsg.options[ListMsg.length]=new Option(tmpValue,tmpValue)
}
}
function initBody(){
var obj="";
SelectStandard(obj);
SelectSteelID(obj);
}但是obj传入 SelectStandard(obj);和 SelectSteelID(obj);后又执行了obj.value,怎样定义一个值为""的obj,使obj.value="";而不是obj="".