private List<Contact> contactList;

string nameT = Apexpages.currentPage().getParameters().get('nameT');
    string phoneT = Apexpages.currentPage().getParameters().get('phoneT');
    string emailT = Apexpages.currentPage().getParameters().get('emailT');

system.debug(nameT + '//' + phoneT + '//' + emailT);


Contact att = new Contact();

att.lastname = nameT;
att.phone = phoneT;
att.email = emailT;
// it returns

contactList.add(att);'

<apex:column>
              <apex:facet name="header">
                <apex:outputPanel >Name</apex:outputPanel>
              </apex:facet>
             <a id="clickFtn" href="javascript:void(0);" onclick="addRow('{!index}')">
              <input type="hidden" value="{!a.name}" id="contactName_{!index}"/>
              <input type="hidden" value="{!a.phone}" id="contactPhone_{!index}"/>
              <input type="hidden" value="{!a.email}" id="contactEmail_{!index}"/>
              {!a.Name}</a>
              <apex:variable var="index" value="{!index+1}"/>
           </apex:column>
             <apex:column id="contactPhone">
              <apex:facet name="header">
                <apex:outputPanel >Phone</apex:outputPanel>
              </apex:facet>
              {!a.Phone}
           </apex:column>
              <apex:column id="contactEmail">
              <apex:facet name="header">
                <apex:outputPanel >Email</apex:outputPanel>
              </apex:facet>
             {!a.Email}
           </apex:column>

          </apex:pageBlockTable>
        </apex:pageBlock>
      </apex:outputPanel>