请教：给本页面的所有 A 标记增加target="_blank"

Question

        <nav id="topnav">
            <ul>
                 <li>
                    <a href="javascript:;" style="color: white;">信息中心</a>
                    <div class="dropmenu" style="width:1050px;left:50px;">
                        <div class="buyandask">
                            <h1>
                                <a href="#">网络安全</a>
                            </h1>
                            <dl>
                                <dd><a href="https://10.18.102.1/login.php">防火墙</a></dd>

                                <dd><a href="https://10.8.0.3" target="_blank" >无线控制器</a></dd>

                        </div>
                        <div class="buyandask">
                            <h1>
                                <a href="#">服务器</a>
                            </h1>
                            <dl>
                                <dd><a href="https://10.100.2.1/login" rel="nofollow">深信服超融合</a></dd>
                                <dd><a href="#" rel="nofollow">H3C超融合</a></dd>

                            </dl>
                        </div>
                        <div class="buyandask">
                            <h1>
                                <a href="#">云计算</a>
                            </h1>
                            <dl>
                                <dd><a href="http://10.5.5.2/">灵跃云办公-主</a></dd>
                                 <dd><a href="http://10.5.5.3/">灵跃云办公-备</a></dd>
                                <dd><a href="http://10.4.5.2/" rel="nofollow">灵跃云教学-主</a></dd>

                                <dd><a href="http://10.4.5.3/" rel="nofollow">灵跃云教学-备</a></dd>
                                <dd><a href="http://10.6.0.2/" rel="nofollow">宏基OVD</a></dd>

                                <dd><a href="http://10.6.0.1/" rel="nofollow">宏基OVP</a></dd>
                            </dl>
                        </div>
                        <div class="buyandask">
                            <h1>
                                <a href="/service/safe.html">一体机管理</a>
                            </h1>
                            <dl>
                                <dd><a href="http://remote.seewo.com/school/login">希沃一体机集控</a></dd>

Answer 1

$("a").each(function(idx, ele) {ele.attr("target", "_blank")});