Javascript Validation

veenna

hi,

i have 20 madatory text boxes in one page.and i want to do validation using javascript.For that i am calling following function in button click.

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 function validate()

{

 var obj1 = document.getElementById('<%=txtMovie.ClientID%>').id; 
 
         for(var i=1;i<20;i++)

           {

                 var txtID = "obj" + i;

               var txtBox= document.getElementById(txtID);
 
              if(txtID.value.length == 0)

                {

                 alert("something");;

                   return false;           

             }

          }    

}

But in this line i am not able to get the control

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document.getElementById(txtID)

.

How can i do this??
any help??

Regards,
Veena

acoder

Show the corresponding HTML. Are you sure the IDs of the text boxes are "obj1", "obj2", etc.?

veenna

hi acoder,

thank u for reply.

IDs of text boxes are different.In the above function i will be declaring obj1 ,obj2 as variables and i will assign ids to it.

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 var obj1 = document.getElementById('<%=txtMovie.ClientID%>');            

var obj2 = document.getElementById('<%=txtCMovie.ClientID%>'); 

var obj3 = document.getElementById('<%=txtNieMovie.ClientID%>'); 

var obj4 = document.getElementById('<%=txtRelDate.ClientID%>'); 

var obj5= document.getElementById('<%=txtLimDate.ClientID%>');

So i want to find the control in foor loop.

regards
veena

acoder

In that case, try:

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var txtBox = window["obj" + i];

veenna

I tried with ur code but value is undefined.

RamananKalirajan

Why can you get the objects by

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 var inpObj = document.getElementsByTagName('input');

for(var i=0;i<inpObj.length;i++)

{

   if(inpObj.type="text"||inpObj.type="TEXT")

    {

         //do Validation

    }

}

Thanks and Regards
Ramanan Kalirajan

Dormilich

Quote:

Originally Posted by RamananKalirajan

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if(inpObj.type="text"||inpObj.type="TEXT")

this code won't work as intended...

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 for(var i=0;i<inpObj.length;i++)

{

   // note the == and the NodeList variable

   if("text" == inpObj[i].type.toLowerCase())

    {

         //do Validation

    }

}

veenna

But i cant use the above code because i have to display different messages based on text box id.

thanks
veena

Dormilich

the do something like

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 var message = {

  id_1: "fool",

  id_2: "idiot",

  // and so on

};

// validation

alert(message[inpObj[i].id]);

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