<form id="form" action="" method="post">

                <input type="hidden" name="selected" value="" />

                <table class="conditionTable">

                    <tr>

                        <td class="first">用户姓名：</td>

                        <td width="20%">

                            <div class="condition-text-container">

                                <input name="user_name" type="text" class="condition-text" maxlength="40"/>

                            </div>

                        </td>

                        <td class="first">用户帐号：</td>

                        <td width="20%">

                            <div class="condition-text-container">

                                <input name="user_code" type="text" class="condition-text" maxlength="40"/>

                            </div>

                        </td>

                    </tr>

                    <tr>

                          <td><div class="btn-operation" onClick="searchData()">查询</div>

                          <div class="btn-reset" onClick="resetting()">重置</div></td>

                    </tr>

                </table>

       </form>

       <script type="text/javascript">function searchData() {

        var inputContext = ($("#form").find("input[type=text]"));

        var pattern = /[~!@#$%^&*()_+-=]$/;

        var flag = false;

        $.each(inputContext, function(index, text){

            if(pattern.test(text.value)){

                $.messager.alert("提示", "搜索条件中含有非法字符，请重新输入!","info");

                flag = true;;

            }

        });

        if(flag){

            alert(1);

            return;

        }
  </script>