js表单验证

 <script>
    function chkfrom() {
        var frmobj = $("addfrm");
        var frmmsg = $("errmsg");
        if (chkspace(frmobj.ReceivePrice.value) == true) {
            frmobj.ReceivePrice.focus();
            showerr("提示信息：验收金额不能为空！");
            return false;
        }
        if (frmobj.ReceivePrice.value.search(/^\d+(?=\.{0,1}\d+$|$)/) == -1) {
            frmobj.ReceivePrice.focus();
            showerr("提示信息：验收金额输入含有非法字符！");
            return false;
        }
        if (chkspace(frmobj.ReceiveNumber.value) == true) {
            frmobj.ReceiveNumber.focus();
            showerr("提示信息：验收数量不能为空！你可以为0！");
            return false;
        }
        if (frmobj.ReceiveNumber.value.search(/^\d+(?=\.{0,1}\d+$|$)/) == -1) {
            frmobj.ReceiveNumber.focus();
            showerr("提示信息：验收数量输入含有非法字符！");
            return false;
        }
        return true;
    }
</script>