<script>
function addUser(name,obj) {
var objVal=document.all.share_user.value
var is = obj.checked;
if(is==true){
if(objVal!="")
{
objVal += ","+name;
}
else
{
objVal= name;
}
}
else{
if(objVal.indexOf(","+name))
objVal= objVal.replace(","+name,"");
else
objVal= objVal.replace(name,"");}
</script>
function addUser(name,obj) {
var objVal=document.all.share_user.value
var is = obj.checked;
if(is==true){
if(objVal!="")
{
objVal += ","+name;
}
else
{
objVal= name;
}
}
else{
if(objVal.indexOf(","+name))
objVal= objVal.replace(","+name,"");
else
objVal= objVal.replace(name,"");}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>New Page 1</title>
</head><body>
<input name="share_user"><br>
<input type=checkbox name=userBox value="user001" onclick=clickFun(this) >user001<br>
<input type=checkbox name=userBox value="user002" onclick=clickFun(this) >user002<br>
<input type=checkbox name=userBox value="user003" onclick=clickFun(this) >user003<br>
<input type=checkbox name=userBox value="user004" onclick=clickFun(this) >user004<br>
<input type=checkbox name=userBox value="user005" onclick=clickFun(this) >user005<br>
</body></html>
<script>
function clickFun(obj) {
var shareUsers=document.all.share_user.value;
if(obj.checked && ! eval("/(^|,)"+ obj.value +"(,|$)/ig").test(shareUsers) )
shareUsers+=obj.value+",";if(!obj.checked && eval("/(^|,)"+ obj.value +"(,|$)/ig").test(shareUsers) )
shareUsers=shareUsers.replace(eval("/(^|,)"+ obj.value +"(,|$)/"),"$1");
document.all.share_user.value=shareUsers;
}
</script>
else{
if(objVal.indexOf(","+name))
objVal= objVal.replace(","+name,"");
else
objVal= objVal.replace(name,"");}
这段并没有生效啊
if(objVal.indexOf(","+name))//去掉带逗号的
objVal= objVal.replace(","+name,"");
else//去掉不带逗号的
objVal= objVal.replace(name,"");}
if(objVal.indexOf(","+name))//去掉带逗号的
判断条件不成立啊。无论有没有带逗号都执行
objVal= objVal.replace(","+name,"");
if(objVal.indexOf(","+name))//去掉带逗号的
objVal= objVal.replace(","+name,"");
else//去掉不带逗号的
objVal= objVal.replace(name,"");
========================================
等价于: if(objVal.indexOf(","+name)){//去掉带逗号的
objVal= objVal.replace(","+name,"");
}
else{//去掉不带逗号的
objVal= objVal.replace(name,"");
}
if(objVal.indexOf(","+name))//去掉带逗号的=============================〉 if(objVal.indexOf(","+name)!=-1)//去掉带逗号的