我通过 phpform.org 创建了一个网络表单(注册),但我想为一个字段(密码)设置条件(如果密码字段等于“测试”,则显示提交字段)
<li id="li_2" >
<label class="description" for="element_2">Name </label>
<span>
<input id="element_2_1" name= "element_2_1" class="element text" maxlength="255" size="8" value=""/>
<label>First</label>
</span>
<span>
<input id="element_2_2" name= "element_2_2" class="element text" maxlength="255" size="14" value=""/>
<label>Last</label>
</span>
</li> <li id="li_1" >
<label class="description" for="element_1">Password </label>
<div>
<input id="element_1" name="element_1" class="element text medium" type="text" maxlength="255" value=""/>
</div>
</li>
<li class="buttons">
<input type="hidden" name="form_id" value="677911" />
<input id="saveForm" class="button_text" type="submit" name="submit" value="Submit" />
</li>
</ul>
</form>
<div id="footer">
Generated by <a href="http://www.phpform.org">pForm</a>
</div>
</div>
<img id="bottom" src="bottom.png" alt="">
</body>
请问我该怎么做?