

废话不多说,直接贴出代码如下:
<input type="text" name="tags" onKeyUp="ReplaceDot(this)">
<script type="text/javascript">
function ReplaceDot(obj)
{
var oldValue=obj.value;
while(oldValue.indexOf(",")!=-1)//寻找每一个中文逗号,并替换
{
obj.value=oldValue.replace(",",",");
oldValue=obj.value;
}
obj.value = oldValue;
}
</script>