Regedit表达式特殊字符

Question

我如何添加一个regedit表达式来捕获空格等特殊字符？

<div class="form-group">
<label>
<span class="required">*
</span>
Code:
</label>
<input class="form-control glValidate" name="txtCode" id="txtCode" />
</div>