1 files changed, 46 insertions, 0 deletions
diff --git a/files/zh-cn/mozilla/firefox/releases/31/index.html b/files/zh-cn/mozilla/firefox/releases/31/index.html
new file mode 100644
index 0000000000..a22131fe8c
--- /dev/null
+++ b/files/zh-cn/mozilla/firefox/releases/31/index.html
@@ -0,0 +1,46 @@
+---
+title: Firefox 31 for developers
+slug: Mozilla/Firefox/Releases/31
+translation_of: Mozilla/Firefox/Releases/31
+---
+<div>{{FirefoxSidebar}}</div><p><span style="font-size: 30px; font-weight: 700; letter-spacing: -1px; line-height: 30px;">Web 开发者需要关注的变化</span></p>
+<h3 id="Developer_Tools">Developer Tools</h3>
+<p><em>No change.</em></p>
+<h3 id="CSS">CSS</h3>
+<ul>
+ <li>CSS变量的语法从旧的 "var-" 前缀更新为新的 "--" 前缀.({{Bug(985838)}})</li>
+ <li>Unwanted white space for multiple of 10,000 in Korean counte.({{Bug(985186)}})</li>
+</ul>
+<h3 id="HTML">HTML</h3>
+<p><em>No change.</em></p>
+<h3 id="JavaScript">JavaScript</h3>
+<p>实现了如下 ECMAScript 6 新特性:</p>
+<ul>
+ <li><code>Array</code> 方法: {{jsxref("Array.prototype.fill()")}} ({{Bug(911147)}})</li>
+ <li><code>Math</code> 函数: {{jsxref("Math.clz32()")}} ({{Bug(925123)}})</li>
+ <li><code>String</code> 方法: {{jsxref("String.prototype.normalize()")}} ({{Bug(918987)}}).</li>
+</ul>
+<h3 id="InterfacesAPIsDOM">Interfaces/APIs/DOM</h3>
+<ul>
+ <li>Constructor of <code>KeyboardEvent</code> has been implemented ({{Bug(930893)}}).</li>
+ <li><code>KeyboardEvent.initKeyboardEvent()</code> has been implemented ({{Bug(930893)}}).</li>
+ <li><code>KeyboardEvent.isComposing</code> attribute has been implemented ({{Bug(993234)}}).</li>
+ <li><code>InputEvent</code> interface has been implemented ({{Bug(993253)}}).</li>
+ <li><code>InputEvent.isComposing</code> attribute has been implemented ({{Bug(993253)}}).</li>
+</ul>
+<h3 id="MathML">MathML</h3>
+<p><em>No change.</em></p>
+<h3 id="SVG">SVG</h3>
+<p><em>No change.</em></p>
+<h3 id="AudioVideo">Audio/Video</h3>
+<p><em>No change.</em></p>
+<h2 id="Security">Security</h2>
+<p><em>No change.</em></p>
+<h2 id="Changes_for_add-on_and_Mozilla_developers">Changes for add-on and Mozilla developers</h2>
+<p><em>No change.</em></p>
+<h2 id="See_also">See also</h2>
+<ul>
+ <li><a href="/en-US/docs/Mozilla/Firefox/Releases/31/Site_Compatibility">Site Compatibility for Firefox 31</a></li>
+</ul>
+<h3 id="Older_versions">Older versions</h3>
+<p>{{Firefox_for_developers('30')}}</p>