diff --git a/app/static/js/index.js b/app/static/js/index.js
index b0d5afa..b5bee2c 100644
--- a/app/static/js/index.js
+++ b/app/static/js/index.js
@@ -3,7 +3,16 @@
 $(document).ready(function () {
     $('.regen').on('click', function (e) {
         e.preventDefault();
-        if(confirm('Are you sure to regenerate your password?'))
+        if (confirm('Are you sure to regenerate your password?'))
             $(this).closest("form").submit();
     });
+
+    // class="click-to-copy":
+    $('.click-to-copy').on('click', function () {
+        var $temp = $("<input>");
+        $("body").append($temp);
+        $temp.val($(this).text()).select();
+        document.execCommand("copy");
+        $temp.remove();
+    });
 });
diff --git a/app/templates/index.html b/app/templates/index.html
index a6ba43e..a7390fb 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -156,9 +156,9 @@ <h4 id="iosdeviceios93orlater">iOS device (iOS 9.3 or later)</h4>
 <h4 id="shell">Shell</h4>
 <ol>
 <li>Run commands (https):</li>
-<li><code>export http_proxy="https://{{escaped_email}}:{{user.vpnpassword}}@light.ustclug.org:29980/"; export https_proxy=$http_proxy;</code></li>
+<li><code class="click-to-copy">export http_proxy="https://{{escaped_email}}:{{user.vpnpassword}}@light.ustclug.org:29980/"; export https_proxy=$http_proxy;</code></li>
 <li>Or (http):</li>
-<li><code>export http_proxy="http://{{escaped_email}}:{{user.vpnpassword}}@light.ustclug.org:29979/"; export https_proxy=$http_proxy;</code></li>
+<li><code class="click-to-copy">export http_proxy="http://{{escaped_email}}:{{user.vpnpassword}}@light.ustclug.org:29979/"; export https_proxy=$http_proxy;</code></li>
 <li>enjoy</li>
 </ol>
 <h4 id="systemproxysetting">system proxy setting</h4>
@@ -174,7 +174,7 @@ <h3 id="telegramproxyusageiosdevice">Telegram proxy usage(iOS device)</h3>
 <li>Server: light.ustclug.org</li>
 <li>Port: 6626</li>
 <li>Username, Password (please check from <a href="https://light.ustclug.org">light.ustclug.org</a>)</li>
-<li>Use for calls：not recommended</li>
+<li>Use for calls: not recommended</li>
 </ul>
 <ol>
 <li>Save and enjoy</li>