[Javascript] 자바스크립트 필수 입력 체크

1. Javascript File

/**************************************************************************
' Method Name : vCheck (object, alert Message)
' Written date : 2007/03/09
' Writter : Bo H. Choi
' Contents : 필수입력 체크
' Purpose : 
' Updated by :
' Updated date :
' Updated contents :
' Sample : if (vCheck(frm_FirstPage.TbUserID, "UserID") == 0) return false;
***************************************************************************/
function vCheck(obj, msg)
{
    if (obj.value == "")
    {
        alert("Please Input Your " + msg) ;
        obj.focus() ;
        return 0 ;
    }
    else
    {
        return 1 ;
    }
}

 

2. Web Page File ( Visual Studio 2005 )

<script type="text/javascript">
function SaveCheck()
{
    if (vCheck(frm_FirstPage.TbUserID, "UserID") == 0) return false;
}
</script>

 

<form id="frm_FirstPage" runat="server">

<input name="TbUserID"  />

<asp:ImageButton ID="BtnLogin" runat="server" OnClick="BtnLogin_Click" />

</form>

 

3. CS File

this.BtnLogin.Attributes.Add("onclick", "return SaveCheck();");