<script>
function PerformSubmit(user) {
  document.chatForm.msgTo.value=user;
  return false;}
</script>
<a href="#" >a</a>
<a href="#" >b</a>
<form name="chatForm"  method="post" >
<input type="text" name="msgTo" >


先点击 a  然后点击 b   
在 input  text  中显示  a,b
这个怎么实现 请高手指点

<script>
function PerformSubmit(user) {
  document.chatForm.msgTo.value=user;
  return false;}
</script>
<a href="#" onClick='PerformSubmit("a")'>a</a>
<a href="#" onClick='PerformSubmit("b")'>b</a>
<form name="chatForm"  method="post" >
<input type="text" name="msgTo" >
</form>

晕,乱了,编辑下

<script language=javascript>
function PerformSubmit(user) {
if(document.chatForm.msgTo.value!=''){
document.chatForm.msgTo.value +=',' + user;}
}
else {
  document.chatForm.msgTo.value =user;}
  return false;}
</script>
<a href="#" onClick='PerformSubmit("a")'>a</a>
<a href="#" onClick='PerformSubmit("b")'>b</a>
<form name="chatForm"  method="post" >
<input type="text" name="msgTo" >
</form>

 

[ 本帖最后由 nnigou 于 2011-9-8 16:22 编辑 ]