正则表达式去存空格

<script>
//输入数字验证
function isNumber(v) {
return v.replace(/[^\d\.\-]/g,'');
}
</script>
<input id="storageDetail_price" class="txt01 txt02" type="text" onblur="changeprice(this)" onkeyup="this.value = isNumber(this.value);" name="storageDetail.price" value="" size="2"/>