Merge branch 'SukkaW-replace-polyfill-io'

about.html

@@ -142,6 +142,7 @@ <h3><img src="icon128.png" alt="Icon" width="64" height="64"><br>
 <li>Michael Heise (de translations)</li>
 <li>Adrian Dorrington (code)</li>
 <li>GLmontanari (code)</li>
+<li>Sukka (code)</li>
 <li>Miguel Sánchez Palomino (es translations)</li>
 <li>kqakqakqa (code, zh-CN translations)</li>
 <li>cyamahat (code)</li>

cn/gallery/GRIN-slab.html

@@ -69,7 +69,7 @@ <h1><b><span>渐变折射率平板</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/NL-simulation.html

@@ -69,7 +69,7 @@ <h1><b><span>NL 双筒望远镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/aplanatic-points.html

@@ -69,7 +69,7 @@ <h1><b><span>等光程点</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/apparent-depth.html

@@ -69,7 +69,7 @@ <h1><b><span>视深度</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/beam-directors.html

@@ -69,7 +69,7 @@ <h1><b><span>光束导向器</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/beam-expanders.html

@@ -69,7 +69,7 @@ <h1><b><span>扩束镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/bended-pencil.html

@@ -69,7 +69,7 @@ <h1><b><span>弯曲的铅笔</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/black-cat-becomes-white.html

@@ -69,7 +69,7 @@ <h1><b><span>「黑猫变白猫」演示</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/branched-flow.html

@@ -68,7 +68,7 @@ <h1><b><span>分支流</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/broken-pencil.html

@@ -69,7 +69,7 @@ <h1><b><span>断裂的铅笔</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/camera-obscura.html

@@ -69,7 +69,7 @@ <h1><b><span>暗箱</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/caustics-from-a-reflective-sphere.html

@@ -68,7 +68,7 @@ <h1><b><span>反射性球体的焦散</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/chaff-countermeasure.html

@@ -69,7 +69,7 @@ <h1><b><span>干扰箔</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/chromatic-aberration.html

@@ -69,7 +69,7 @@ <h1><b><span>色像差</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/chromatic-dispersion.html

@@ -69,7 +69,7 @@ <h1><b><span>色散</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/compound-microscope.html

@@ -69,7 +69,7 @@ <h1><b><span>复式显微镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/concave-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>凹透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/concave-mirror-wearable-display.html

@@ -68,7 +68,7 @@ <h1><b><span>凹面镜可穿戴显示器</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/convex-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>凸透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/dichroic-rbg-splitter-and-combiner.html

@@ -69,7 +69,7 @@ <h1><b><span>二色性RGB分光器与合光器</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/einstein-ring-refocused-to-single-image-via-eyepiece.html

@@ -69,7 +69,7 @@ <h1><b><span>经由目镜将爱因斯坦环重新聚焦为单一影像</span></b
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/fresnel-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>菲涅耳透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/gan-based-lcd-pixel.html

@@ -69,7 +69,7 @@ <h1><b><span>液晶显示器像素</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/hyperbolic-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>双曲透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/hyperbolic-mirror.html

@@ -69,7 +69,7 @@ <h1><b><span>双曲面镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/images-formed-by-two-mirrors.html

@@ -69,7 +69,7 @@ <h1><b><span>两面镜子成像</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/inferior-mirage.html

@@ -69,7 +69,7 @@ <h1><b><span>下蜃景</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/internal-reflection.html

@@ -69,7 +69,7 @@ <h1><b><span>全反射</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/interrogation-room.html

@@ -69,7 +69,7 @@ <h1><b><span>审讯室</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/keplerian-telescope.html

@@ -68,7 +68,7 @@ <h1><b><span>开普勒望远镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/lens-images.html

@@ -69,7 +69,7 @@ <h1><b><span>透镜成像</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/logarithmic-spiral-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>等角螺线形的光线路径</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/luneburg-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>龙勃透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/maxwell-fisheye-lens.html

@@ -69,7 +69,7 @@ <h1><b><span>麦克斯韦鱼眼透镜</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>

cn/gallery/maze-solution.html

@@ -69,7 +69,7 @@ <h1><b><span>用一条光线解迷宫</span></b></h1>
 <script src="../../thirdparty/jquery.min.js"></script>
 <script src="../../thirdparty/bootstrap-3.3.7/bootstrap.min.js"></script>
 <script async defer src="https://buttons.github.io/buttons.js"></script>
-<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+<script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
 </body>
 </html>