Using JSP in combination with JavaScript for creating dynamic templates

Question

Using JSP in combination with JavaScript for creating dynamic templates

Implementing server-side HTML templating with JSP + JSTL allows for the generation of tables containing user data:

<body>
    ...
    <table>
        <c:forEach items="${users}" var="user">
        <tr>
            <td>${user.name}</td>
            <td>${user.age}</td>
            <td>${user.department}</td>
        </tr>
        </c:forEach>
    </table>
    ...
</body>

This is known as template number 1.

When a user submits new data through a form, AJAX sends the data to the server. Upon success, the new data should be dynamically added to the table without any page reload.

To achieve this, template number 2 can be used. It can either be encapsulated within JavaScript or included in the HTML page with "display: none;" and "class='template'".

<tr class="template" style="display: none;">
    <td>%user.name%</td>
    <td>%user.age%</td>
    ...
</tr>
...
<script>
    $(".template").clone().fillTheTemplateAndAppendToTheTable(user); //just to explain
</script>

The question: Is it possible to avoid duplicating HTML code and have only one universal template in this scenario? If so, how can that be achieved?

javascript ajax templates jsp

Answer 1

Answer №1

One possible solution is as follows:

Template Option 1:

<body>
    ...
    <table id="userTable">
        <c:forEach items="${users}" var="user">
        <%@include file="userRow.jsp" %>
        </c:forEach>
    </table>
    ...
</body>

Contents of userRow.jsp:

<tr>
    <td>${user.name}</td>
    <td>${user.age}</td>
    <td>${user.department}</td>
</tr>

The main action to display the complete table would direct to the first template, while the action managing the ajax call would be linked to userRow.jsp.

In the ajax callback function, simply concatenate the HTML received from the server (the output of executing userRow.jsp) at the end of your table. The JQuery implementation would resemble this example (with createUser.action representing the action that generates a new user utilizing the parameters contained in the user JavaScript object and then redirects to userRow.jsp for rendering the recently added user):

function createUser(user) {
    $.get("createUser.action", user, ajaxCallbackAddingNewUser);
}

function ajaxCallbackAddingNewUser(newUserRow) {
    $("#userTable").append(newUserRow);
}

Answer 2

One possible solution is as follows:

Template Option 1:

<body>
    ...
    <table id="userTable">
        <c:forEach items="${users}" var="user">
        <%@include file="userRow.jsp" %>
        </c:forEach>
    </table>
    ...
</body>

Contents of userRow.jsp:

<tr>
    <td>${user.name}</td>
    <td>${user.age}</td>
    <td>${user.department}</td>
</tr>

The main action to display the complete table would direct to the first template, while the action managing the ajax call would be linked to userRow.jsp.

In the ajax callback function, simply concatenate the HTML received from the server (the output of executing userRow.jsp) at the end of your table. The JQuery implementation would resemble this example (with createUser.action representing the action that generates a new user utilizing the parameters contained in the user JavaScript object and then redirects to userRow.jsp for rendering the recently added user):

function createUser(user) {
    $.get("createUser.action", user, ajaxCallbackAddingNewUser);
}

function ajaxCallbackAddingNewUser(newUserRow) {
    $("#userTable").append(newUserRow);
}

Using JSP in combination with JavaScript for creating dynamic templates

Answer №1

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