怎么样去掉字符串前后的符号呀？

[wfcfan]

比如 900,500,

怎么变成　900,500

[hbhbhbhbhb1021]

alert(str.replace(/,$/,""))

[shili150]

substring（0，7）

[xyysh2000]

如果前后都要去,用mid()函数吧,如果只去后面的就用left()函数.

[rjzou2006]

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

[wfcfan]

晕的

那只是一个例子，
900,500,,,,,,,,这样的呢?

[joohnnie]

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

[hbhbhbhbhb1021]

//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))

[muxrwc]

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