IT Knowledge Sharing | Interview questions

This is the JavaScript code to invite facebook friends (Posting message to their wall) function inviteFBFriend(friend_id,invitation_message){ var opts = {              message : invitation_message,              name : 'Hello User',              description : 'Facebook is great!',              picture : 'http://www.knowledgeserve.in/images/knowledgeServeLogo.jpg '     }; FB.api('/'+friend_id+'/feed', 'post', opts , function(response) {        if (!response || response.error) {         alert('Error occured');                    } else {            alert('Post ID: ' + response.id);        }      }); }

Add this coe to body element of your html file..... <div id="findAllFriends">     <div id="fb-root"></div>          <div class="fb_login_user_status">         <a class="fb_button fb_button_medium">             <span id="fb-auth" class="fb_button_text">Log In with Facebook</span>         </a>      </div>      <div class="fbUser" id="user-info"></div     <div id="friendslistFB" >        <table id="fbFriends" width="100%" border="0" >        </table>        </div>    </div> /**** Java Script code ********/ var facebookAppId=' your facebook app id '; window.fbAsyncInit = function() {   FB.init({ appId: facebookAppId,     status: true,  ...

Access value form <s:iterator> into <s:if> (ognl with <s:if> and <s:iterator>) For example: Suppose loadUserList is the itertaor(containing UserName and Address ) to be iterate on jsp, <s:if test="loadUserList != null && loadUserList.isEmpty()">   <s:iterator value="loadUserWalksResults" status="rowStatus">                   UserName :<s:property escape="false" value="userName" /> Address: <s:property escape="false" value="address" /> <s:if test='userName.equals("Admin")'>This is admin User</s:if> <s:else>This is not an admin user!</s:else>   </s:iterator> </s:if>

The <s:iterator> tag is widely used on UI (jsp)  to iterate some collection returned by any action. <table class="facebookFriendList">    <tr class="even">        <td><b>UserName</b></td>        <td><b>ProfileImage</b></td>     </tr>    <s:iterator value="facebookFriendList" status="rowStatus">      <tr class="<s:if test="rowStatus.odd == true ">odd</s:if><s:else>even</s:else>">          <td><s:property value="userName" /></td>          <td><s:property value="profileImageURL" /></td>      </tr>      </s:iterator> </table> We use the iterator tag to iterator over the collections. See OGNL expression #statusName. Properties of the IteratorStatu...