javascript select的 值填入 text

[zty0527]

select下拉菜单选择的值,填入text中,中间用","分隔,选择的值不能重复

谢谢

[hbhbhbhbhb1021]

<select name="aaa" onchange="show(this)">
	<option value="111">111</option>
	<option value="222">222</option>
	<option value="333">333</option>
	<option value="444">444</option>
</select>
<input name="bbb">
<script language="javascript">
		function show(obj)
		{
			var objBBB=document.getElementById("bbb")
			var str=objBBB.value;
			var strSelect=obj.value
			if(str=="")
			{
				str=strSelect
			}else{
				if(!new RegExp(","+strSelect+",").test(","+str+","))
				{
					str=str+","+strSelect;
				}
			}
			objBBB.value=str
		}
</script>

[tantaiyizu]

1楼真快

[hookee]

<script>
function dosel(obj){
   if(obj.selectedIndex==0) return false;
   var val = obj.options[obj.selectedIndex].value;
   var s = document.forms[0].txt.value
   var arr = s.split(",");
   var b = false;
   for(var i=0;i<arr.length;i++){
       if(arr[i]==val){b = true; break;}
   }
   if(!b){
   	  if(s=="") s = val;
      else s += "," + val; 	
   }
   document.forms[0].txt.value = s;
}
</script>
<form>
<select name="sel" onchange="dosel(this);">
	<option value="">请选择</option>
	<option value="1">1</option>
	<option value="2">2</option>
	<option value="3">3</option>
	<option value="4">4</option>
	<option value="5">5</option>
	<option value="6">6</option>
</select>
<input type="text" name="txt" readonly="true" />
</form>	

[myvicy]

<script>
function getvalue(o){
	var str="";//
	for(var i=0;i<o.length;i++){
		op = o.options[i];
		if(op.selected==true)str+=op.value+","
	}
	document.getElementById("mytext").value=str.substr(0,str.length-1)
}
</script>
<select onblur="getvalue(this)" multiple="multiple" size="2">
	<option value=1>1</option>
	<option value=2>2</option>
	<option value=3>3</option>
	<option value=4>4</option>
	<option value=5>5</option>
</select>
<input id='mytext' name='mytext'/>

[zty0527]

自己顶

[myvicy]

<script>
function getvalue(v){
	var str,o;//
	o = document.getElementById("mytext")
	str = o.value
	str = (str?(","+str+",").replace(","+v+",",","):",")+v
	o.value=str.substr(1,str.length)
}
</script>
<select onchange="getvalue(this.value)">
	<option value=1>1</option>
	<option value=2>2</option>
	<option value=3>3</option>
	<option value=4>4</option>
	<option value=5>5</option>
</select>
<input id='mytext' name='mytext'/>

[一把编程的菜刀]

<script>
function getvalue(v){
var str,o;
var regu = "^("+v+")";
o = document.getElementById("mytext")
str = o.value;
var re = new RegExp(regu);
if(str==""){
o.value=v;
}
else{
if(str.search(re) != -1){
return false;
}
else{
o.value=str+","+v;
}
}
}
</script>
<select onchange="getvalue(this.value)">
<option value=1>1</option>
<option value=2>2</option>
<option value=3>3</option>
<option value=4>4</option>
<option value=5>5</option>
</select>
<input id='mytext' name='mytext'/>

[一把编程的菜刀]

上面那个有错误

<script>
<script>
function getvalue(v){
    var str,o;//
    o = document.getElementById("mytext")
    str = o.value;
	if(str==""){
	o.value=v;
	}
	else{
	 if(str.indexOf(""+v+"")>=0){   
      return true;   
       }   
	else{
	o.value=str+","+v;
	}
	}
}
</script>
<select onchange="getvalue(this.value)">
    <option value=1>1</option>
    <option value=2>2</option>
    <option value=3>3</option>
    <option value=4>4</option>
    <option value=5>5</option>
</select>
<input id='mytext' name='mytext'/>

[fxs_2008]

全是高手，学习！

[redleaf1995]

全都不错,学习了...

[oec2003]

学习了