怎么样去掉字符串前后的符号呀？

Question

如果前后都要去,用mid()函数吧,如果只去后面的就用left()函数.

Answer 1

str= "900,500,";
str=substring(str,0,str.length-1) 
str=substring(str,1,str.length)

Answer 2

var t=",,,900,500,,,,,,,,";
   var t1=t.replace(/\D*$/g,"");
   alert(t1);
   alert(t1.replace(/^\D*/g,""))

Answer 3

//还不是太明确哦，是不是下面的意思
var t=",,,900,500,,,,,,,,";
re=/\d+/g
alert(t.match(re))

Answer 4

<script type="text/javascript">
alert(",,,900,500,,,,,,,,".replace(/^\D+|\D+$/g,""));
</script>