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 <article class="container">
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     <a class="edit-on-gh" href="https://github.com/apache/struts-site/edit/master/source/core-developers/client-side-validation.md" title="Edit this page on GitHub">Edit on GitHub</a>

     <a href="validation" title="back to Validation"><< back to Validation</a>

     <h1 class="no_toc" id="client-side-validation">Client Side Validation</h1>

 <ul id="markdown-toc">
   <li><a href="#basics" id="markdown-toc-basics">Basics</a></li>
   <li><a href="#referencing-submitprofile-in-the-user-namespace" id="markdown-toc-referencing-submitprofile-in-the-user-namespace">Referencing “submitProfile” in the “/user” namespace</a></li>
   <li><a href="#wont-work-with-client-side-validation" id="markdown-toc-wont-work-with-client-side-validation">Won’t work with client-side validation!</a></li>
   <li><a href="#the-left-hand-doesnt-know-" id="markdown-toc-the-left-hand-doesnt-know-">The left hand doesn’t know …</a></li>
   <li><a href="#client-side-validation-types" id="markdown-toc-client-side-validation-types">Client Side Validation Types</a></li>
 </ul>

 <h2 id="basics">Basics</h2>

 <p>The framework adds support for client-side validation on top of the standard validation framework.</p>

 <p>Client-side validation can be enabled on a per-form basis by specifying <code class="highlighter-rouge">validate="true"</code> in the <em>form</em> tag.</p>

 <pre><code class="language-jsp">&lt;s:form name="test" action="javascriptValidation" validate="true"&gt;
   ...
 &lt;/s:form&gt;
 </code></pre>

 <p>If a <code class="highlighter-rouge">name</code> for the form is not given, the action mapping name will be used as the form name. Otherwise, a correct
 <code class="highlighter-rouge">action</code> and <code class="highlighter-rouge">namespace</code> attributes must be provided to the <code class="highlighter-rouge">&lt;saf:form&gt;</code> tag.</p>

 <h2 id="referencing-submitprofile-in-the-user-namespace">Referencing “submitProfile” in the “/user” namespace</h2>

 <pre><code class="language-jsp">&lt;s:form namespace="/user" action="submitProfile" validate="true"&gt;
   ...
 &lt;/s:form&gt;
 </code></pre>

 <p>Technically, the form’s action attribute can refer to a “path” that includes the namespace and action as a URI.
 But, client-side validation <strong>requires</strong> that the action name and namespeact to be set separately.</p>

 <h2 id="wont-work-with-client-side-validation">Won’t work with client-side validation!</h2>

 <pre><code class="language-jsp">&lt;s:form action="/user/submitProfile.action" validate="true"&gt;
   ...
 &lt;/s:form&gt;

 </code></pre>

 <p>All the usual <a href="validation">validation configuration</a> steps apply to client-side validation. Client-side validation
 uses the same validation rules as server-side validation. If server-side validation doesn’t work, then client-side
 validation won’t work either.</p>

 <h2 id="the-left-hand-doesnt-know-">The left hand doesn’t know …</h2>

 <blockquote>
   <p>The required attribute on many <em>Struts Tags</em> is not integrated with client-side validation! The tag attribute is used
 by certain themes (like xhtml) to put a visual marker (usually ‘*’) next to the field. The tag doesn’t know
 if the validation system actually “requires” the field or not.</p>
 </blockquote>

 <h2 id="client-side-validation-types">Client Side Validation Types</h2>

 <p>There are two styles of client side validation.</p>

 <table>
   <thead>
     <tr>
       <th><a href="pure-java-script-client-side-validation">Pure JavaScript Client Side Validation</a></th>
       <th>Used by the <em>xhtml theme</em> and <em>css_xhtml theme</em></th>
     </tr>
   </thead>
   <tbody>
     <tr>
       <td><a href="ajax-client-side-validation">AJAX Client Side Validation</a></td>
       <td>Use to used by the <em>ajax theme</em></td>
     </tr>
   </tbody>
 </table>

   </section>
 </article>


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	<a class="edit-on-gh" href="https://github.com/apache/struts-site/edit/master/source/core-developers/client-side-validation.md" title="Edit this page on GitHub">Edit on GitHub</a>

	<a href="validation" title="back to Validation"><< back to Validation</a>

	<h1 class="no_toc" id="client-side-validation">Client Side Validation</h1>

	<ul id="markdown-toc">
	<li><a href="#basics" id="markdown-toc-basics">Basics</a></li>
	<li><a href="#referencing-submitprofile-in-the-user-namespace" id="markdown-toc-referencing-submitprofile-in-the-user-namespace">Referencing “submitProfile” in the “/user” namespace</a></li>
	<li><a href="#wont-work-with-client-side-validation" id="markdown-toc-wont-work-with-client-side-validation">Won’t work with client-side validation!</a></li>
	<li><a href="#the-left-hand-doesnt-know-" id="markdown-toc-the-left-hand-doesnt-know-">The left hand doesn’t know …</a></li>
	<li><a href="#client-side-validation-types" id="markdown-toc-client-side-validation-types">Client Side Validation Types</a></li>
	</ul>

	<h2 id="basics">Basics</h2>

	<p>The framework adds support for client-side validation on top of the standard validation framework.</p>

	<p>Client-side validation can be enabled on a per-form basis by specifying <code class="highlighter-rouge">validate="true"</code> in the <em>form</em> tag.</p>

	<pre><code class="language-jsp"><s:form name="test" action="javascriptValidation" validate="true">
	...
	</s:form>
	</code></pre>

	<p>If a <code class="highlighter-rouge">name</code> for the form is not given, the action mapping name will be used as the form name. Otherwise, a correct
	<code class="highlighter-rouge">action</code> and <code class="highlighter-rouge">namespace</code> attributes must be provided to the <code class="highlighter-rouge"><saf:form></code> tag.</p>

	<h2 id="referencing-submitprofile-in-the-user-namespace">Referencing “submitProfile” in the “/user” namespace</h2>

	<pre><code class="language-jsp"><s:form namespace="/user" action="submitProfile" validate="true">
	...
	</s:form>
	</code></pre>

	<p>Technically, the form’s action attribute can refer to a “path” that includes the namespace and action as a URI.
	But, client-side validation <strong>requires</strong> that the action name and namespeact to be set separately.</p>

	<h2 id="wont-work-with-client-side-validation">Won’t work with client-side validation!</h2>

	<pre><code class="language-jsp"><s:form action="/user/submitProfile.action" validate="true">
	...
	</s:form>

	</code></pre>

	<p>All the usual <a href="validation">validation configuration</a> steps apply to client-side validation. Client-side validation
	uses the same validation rules as server-side validation. If server-side validation doesn’t work, then client-side
	validation won’t work either.</p>

	<h2 id="the-left-hand-doesnt-know-">The left hand doesn’t know …</h2>

	<blockquote>
	<p>The required attribute on many <em>Struts Tags</em> is not integrated with client-side validation! The tag attribute is used
	by certain themes (like xhtml) to put a visual marker (usually ‘*’) next to the field. The tag doesn’t know
	if the validation system actually “requires” the field or not.</p>
	</blockquote>

	<h2 id="client-side-validation-types">Client Side Validation Types</h2>

	<p>There are two styles of client side validation.</p>

	<table>
	<thead>
	<tr>
	<th><a href="pure-java-script-client-side-validation">Pure JavaScript Client Side Validation</a></th>
	<th>Used by the <em>xhtml theme</em> and <em>css_xhtml theme</em></th>
	</tr>
	</thead>
	<tbody>
	<tr>
	<td><a href="ajax-client-side-validation">AJAX Client Side Validation</a></td>
	<td>Use to used by the <em>ajax theme</em></td>
	</tr>
	</tbody>
	</table>

	</section>
	</article>


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