remove span tag in zh-CN

11 files changed, 30 insertions, 30 deletions

diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/abs/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/abs/index.html
index 13f5f96b79..60747a871d 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/abs/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/abs/index.html
@@ -22,7 +22,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/abs
 
 <h2 id="Description" name="Description">说明</h2>
 
-<p><code><font face="Open Sans, sans-serif"><span style="line-height: 21px;">由于 </span></font>Math.abs()</code> <code>是</code> <code>Math</code> 中的一个静态方法，你应该通过 <code>Math.abs()</code> <code>调用。</code>（Math 不是构造器）</p>
+<p><code><font face="Open Sans, sans-serif">由于 </font>Math.abs()</code> <code>是</code> <code>Math</code> 中的一个静态方法，你应该通过 <code>Math.abs()</code> <code>调用。</code>（Math 不是构造器）</p>
 
 <h2 id="Examples" name="Examples">示例</h2>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/cbrt/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/cbrt/index.html
index d583caf717..96d8b00a37 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/cbrt/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/cbrt/index.html
@@ -34,7 +34,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/cbrt
 
 <p>而不是作为您创建的Math对象的方法(Math不是构造函数)。</p>
 
-<p><span style="font-family: 'Courier New','Andale Mono',monospace; font-weight: inherit; line-height: normal;">cbrt 是 "cube root" 的缩写, 意思是立方根.</span></p>
+<p>cbrt 是 "cube root" 的缩写, 意思是立方根.</p>
 
 <h2 id="Examples" name="Examples">示例</h2>
 
@@ -50,7 +50,7 @@ Math.cbrt(Infinity); // Infinity
 Math.cbrt(null); // 0
 Math.cbrt(2);  // 1.2599210498948734</pre>
 
-<h2 id="Polyfill"><font face="consolas, Liberation Mono, courier, monospace"><span style="background-color: rgba(220, 220, 220, 0.5);">Polyfill</span></font></h2>
+<h2 id="Polyfill"><font face="consolas, Liberation Mono, courier, monospace">Polyfill</font></h2>
 
 <p>为了与旧版浏览器兼容, 可使用下方函数模拟cbrt():</p>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/clz32/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/clz32/index.html
index ec23e5ab09..bd41c06b44 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/clz32/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/clz32/index.html
@@ -31,7 +31,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/clz32
 
 <p><code>NaN</code>, <code>Infinity</code>,<code> -Infinity</code> 这三个数字转成 32 位无符号整形数字后都是 <code>0</code>.</p>
 
-<p><span>这个函数主要用于那些编译目标为 JS 语言的系统中, 比如 Emscripten.</span></p>
+<p>这个函数主要用于那些编译目标为 JS 语言的系统中, 比如 Emscripten.</p>
 
 <h2 id="示例">示例</h2>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/expm1/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/expm1/index.html
index 74502e9d83..f7baeb0486 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/expm1/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/expm1/index.html
@@ -22,7 +22,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/expm1
 
 <h2 id="Description" name="Description">描述</h2>
 
-<p><code><span style="color: #4d4e53; font-family: 'Open Sans',sans-serif; line-height: 21px;">参数 </span><code style="font-size: 14px; line-height: inherit; margin: 0px; padding: 0px; border: 0px; color: rgb(77, 78, 83);">x</code><span style="color: #4d4e53; font-family: 'Open Sans',sans-serif; line-height: 21px;"> 会被自动类型转换成 </span><code style="font-size: 14px; line-height: inherit; margin: 0px; padding: 0px; border: 0px; color: rgb(77, 78, 83);">number </code><span style="color: #4d4e53; font-family: 'Open Sans',sans-serif; line-height: 21px;">类型.</span></code></p>
+<p><code>参数 <code style="font-size: 14px; line-height: inherit; margin: 0px; padding: 0px; border: 0px; color: rgb(77, 78, 83);">x</code> 会被自动类型转换成 <code style="font-size: 14px; line-height: inherit; margin: 0px; padding: 0px; border: 0px; color: rgb(77, 78, 83);">number </code>类型.</code></p>
 
 <p><code>expm1 是 "exponent minus 1" 的缩写.</code></p>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/floor/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/floor/index.html
index 91e6f0c395..530f15a033 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/floor/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/floor/index.html
@@ -146,7 +146,7 @@ Math.ceil10(-59, 1); // -50
    <td></td>
   </tr>
   <tr>
-   <td>{{SpecName('ES6', '#sec-math.floor', 'Math.floor')}}<span class="hidden"> </span></td>
+   <td>{{SpecName('ES6', '#sec-math.floor', 'Math.floor')}} </td>
    <td>{{Spec2('ES6')}}</td>
    <td></td>
   </tr>
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/imul/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/imul/index.html
index 67da70040d..9d0e9f1c29 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/imul/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/imul/index.html
@@ -45,7 +45,7 @@ Math.imul(0xfffffffe, 5) //-10
 
 <p>下面的 JavaScript 代码可以实现该函数:</p>
 
-<pre class="brush: js"><span style='background-color: transparent; font-family: consolas,"Liberation Mono",courier,monospace; font-size: 1rem; font-weight: inherit; letter-spacing: -0.00278rem; white-space: pre;'>if (!Math.imul) Math.imul = function(a, b) {</span>
+<pre class="brush: js">if (!Math.imul) Math.imul = function(a, b) {
   var aHi = (a &gt;&gt;&gt; 16) &amp; 0xffff;
   var aLo = a &amp; 0xffff;
   var bHi = (b &gt;&gt;&gt; 16) &amp; 0xffff;
@@ -57,7 +57,7 @@ Math.imul(0xfffffffe, 5) //-10
 
 <p>然而，下面的实现性能会更好一些。因为运行这段 polyfill 的浏览器很有可能会在内部使用浮点数，而不是整数表示 javascript 的 Number。</p>
 
-<pre class="brush: js"><span style='background-color: transparent; font-family: consolas,"Liberation Mono",courier,monospace; font-size: 1rem; font-weight: inherit; letter-spacing: -0.00278rem; white-space: pre;'>if (!Math.imul) Math.imul = function(opA, opB) {</span>
+<pre class="brush: js">if (!Math.imul) Math.imul = function(opA, opB) {
   opB |= 0; // ensure that opB is an integer. opA will automatically be coerced.
   // floating points give us 53 bits of precision to work with plus 1 sign bit
   // automatically handled for our convienence:
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/log10/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/log10/index.html
index 7819f922e8..3b8aefc6ed 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/log10/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/log10/index.html
@@ -9,7 +9,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/log10
 
 <h2 id="Summary" name="Summary">概述</h2>
 
-<p><code><strong>Math.log10()</strong></code> 函数返回<span style="color: #4d4e53; line-height: 1.5;">一个数字以 10 为底的对数.</span></p>
+<p><code><strong>Math.log10()</strong></code> 函数返回一个数字以 10 为底的对数.</p>
 
 <h2 id="Syntax" name="Syntax">语法</h2>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/pi/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/pi/index.html
index 77f373196e..69b5ab79d1 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/pi/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/pi/index.html
@@ -23,11 +23,11 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/PI
 
 <p>下面的函数使用 Math.PI 计算给定半径的圆周长：</p>
 
-<pre class="brush:js  language-js" style="padding: 1em 0px 1em 30px; font-size: 14px; white-space: normal; color: rgb(77, 78, 83);"><code class="language-js" style="direction: ltr; white-space: pre;"><span class="keyword token" style="color: rgb(0, 119, 170);">function</span> calculateCircumference <span class="punctuation token" style="color: rgb(153, 153, 153);">(</span>radius<span class="punctuation token" style="color: rgb(153, 153, 153);">)</span> <span class="punctuation token" style="color: rgb(153, 153, 153);">{</span>
-  <span class="keyword token" style="color: rgb(0, 119, 170);">return</span> <span class="number token" style="color: rgb(153, 0, 85);">2</span> <span class="operator token" style="background: rgba(255, 255, 255, 0.498039); color: rgb(166, 127, 89);">*</span> Math<span class="punctuation token" style="color: rgb(153, 153, 153);">.</span>PI <span class="operator token" style="background: rgba(255, 255, 255, 0.498039); color: rgb(166, 127, 89);">*</span> radius<span class="punctuation token" style="color: rgb(153, 153, 153);">;</span>
-<span class="punctuation token" style="color: rgb(153, 153, 153);">}</span>
+<pre class="brush:js  language-js" style="padding: 1em 0px 1em 30px; font-size: 14px; white-space: normal; color: rgb(77, 78, 83);"><code class="language-js" style="direction: ltr; white-space: pre;">function calculateCircumference (radius) {
+  return 2 * Math.PI * radius;
+}
 
-<span class="function token" style="color: rgb(221, 74, 104);">calculateCircumference<span class="punctuation token" style="color: rgb(153, 153, 153);">(</span></span><span class="number token" style="color: rgb(153, 0, 85);">1</span><span class="punctuation token" style="color: rgb(153, 153, 153);">)</span><span class="punctuation token" style="color: rgb(153, 153, 153);">;</span> <span class="comment token" style="color: rgb(112, 128, 144);"> // 6.283185307179586</span></code></pre>
+calculateCircumference(1);  // 6.283185307179586</code></pre>
 
 <h2 id="规范">规范</h2>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/pow/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/pow/index.html
index 32489252c0..3ede0647ac 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/pow/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/pow/index.html
@@ -5,7 +5,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/pow
 ---
 <div>{{JSRef}}</div>
 
-<p><code><strong>Math.pow()</strong></code> 函数返回基数（<code>base</code>）的指数（<code>exponent</code>）次幂，即<span style="line-height: 1.572;"> </span><code style="font-size: 14px;">base<sup>exponent</sup></code><span style="line-height: 1.572;">。</span></p>
+<p><code><strong>Math.pow()</strong></code> 函数返回基数（<code>base</code>）的指数（<code>exponent</code>）次幂，即 <code style="font-size: 14px;">base<sup>exponent</sup></code>。</p>
 
 <p>{{EmbedInteractiveExample("pages/js/math-pow.html")}}</p>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/random/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/random/index.html
index efc11b6894..e25608ec05 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/random/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/random/index.html
@@ -50,11 +50,11 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/random
 
 <p>这个例子返回了一个在指定值之间的随机整数。这个值不小于 <code>min</code> （如果 <code>min</code> 不是整数，则不小于 <code>min</code> 的向上取整数），且小于（不等于）<code>max</code>。</p>
 
-<pre class="brush: js line-numbers  language-js notranslate"><code class="language-js"><span class="keyword token">function</span> <span class="function token">getRandomInt</span><span class="punctuation token">(</span>min<span class="punctuation token">,</span> max<span class="punctuation token">)</span> <span class="punctuation token">{</span>
-  min <span class="operator token">=</span> Math<span class="punctuation token">.</span><span class="function token">ceil</span><span class="punctuation token">(</span>min<span class="punctuation token">)</span><span class="punctuation token">;</span>
-  max <span class="operator token">=</span> Math<span class="punctuation token">.</span><span class="function token">floor</span><span class="punctuation token">(</span>max<span class="punctuation token">)</span><span class="punctuation token">;</span>
-  <span class="keyword token">return</span> Math<span class="punctuation token">.</span><span class="function token">floor</span><span class="punctuation token">(</span>Math<span class="punctuation token">.</span><span class="function token">random</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="operator token">*</span> <span class="punctuation token">(</span>max <span class="operator token">-</span> min<span class="punctuation token">)</span><span class="punctuation token">)</span> <span class="operator token">+</span> min<span class="punctuation token">;</span> </code>//不含最大值，含最小值<code class="language-js">
-<span class="punctuation token">}</span></code></pre>
+<pre class="brush: js line-numbers  language-js notranslate"><code class="language-js">function getRandomInt(min, max) {
+  min = Math.ceil(min);
+  max = Math.floor(max);
+  return Math.floor(Math.random() * (max - min)) + min; </code>//不含最大值，含最小值<code class="language-js">
+}</code></pre>
 
 <div class="note">
 <p>也许很容易想到用 <code>Math.round()</code> 来实现，但是这会导致你的随机数处于一个不均匀的分布，这可能不符合你的需求。</p>
@@ -64,11 +64,11 @@ translation_of: Web/JavaScript/Reference/Global_Objects/Math/random
 
 <p>上一个例子提到的函数 <code>getRandomInt()</code> 结果范围包含了最小值，但不含最大值。如果你的随机结果需要同时包含最小值和最大值，怎么办呢?  <code>getRandomIntInclusive()</code> 函数可以实现。</p>
 
-<pre class="brush: js line-numbers  language-js notranslate"><code class="language-js"><span class="keyword token">function</span> <span class="function token">getRandomIntInclusive</span><span class="punctuation token">(</span>min<span class="punctuation token">,</span> max<span class="punctuation token">)</span> <span class="punctuation token">{</span>
-  min <span class="operator token">=</span> Math<span class="punctuation token">.</span><span class="function token">ceil</span><span class="punctuation token">(</span>min<span class="punctuation token">)</span><span class="punctuation token">;</span>
-  max <span class="operator token">=</span> Math<span class="punctuation token">.</span><span class="function token">floor</span><span class="punctuation token">(</span>max<span class="punctuation token">)</span><span class="punctuation token">;</span>
-  <span class="keyword token">return</span> Math<span class="punctuation token">.</span><span class="function token">floor</span><span class="punctuation token">(</span>Math<span class="punctuation token">.</span><span class="function token">random</span><span class="punctuation token">(</span><span class="punctuation token">)</span> <span class="operator token">*</span> <span class="punctuation token">(</span>max <span class="operator token">-</span> min <span class="operator token">+</span> <span class="number token">1</span><span class="punctuation token">)</span><span class="punctuation token">)</span> <span class="operator token">+</span> min<span class="punctuation token">;</span> <span class="comment token">//含最大值，含最小值 </span>
-<span class="punctuation token">}</span></code></pre>
+<pre class="brush: js line-numbers  language-js notranslate"><code class="language-js">function getRandomIntInclusive(min, max) {
+  min = Math.ceil(min);
+  max = Math.floor(max);
+  return Math.floor(Math.random() * (max - min + 1)) + min; //含最大值，含最小值 
+}</code></pre>
 
 <h2 id="规范">规范</h2>
 
diff --git a/files/zh-cn/web/javascript/reference/global_objects/math/sign/index.html b/files/zh-cn/web/javascript/reference/global_objects/math/sign/index.html
index ca7678c9f0..9c41082511 100644
--- a/files/zh-cn/web/javascript/reference/global_objects/math/sign/index.html
+++ b/files/zh-cn/web/javascript/reference/global_objects/math/sign/index.html
@@ -50,12 +50,12 @@ Math.sign();      // NaN
 
 <h2 id="Compatibility" name="Compatibility">Polyfill</h2>
 
-<pre class="brush: js  language-js"><code class="language-js"><span class="keyword token">function</span> <span class="function token">sign<span class="punctuation token">(</span></span>x<span class="punctuation token">)</span> <span class="punctuation token">{</span>
-    x <span class="operator token">=</span> <span class="operator token">+</span>x<span class="comment token"> ;// convert to a number
-</span>    <span class="keyword token">if</span> <span class="punctuation token">(</span>x <span class="operator token">===</span> <span class="number token">0</span> <span class="operator token">||</span> <span class="function token">isNaN<span class="punctuation token">(</span></span>x<span class="punctuation token">)</span><span class="punctuation token">)</span>
-        <span class="keyword token">return</span> x;
-    <span class="keyword token">return</span> x <span class="operator token">&gt;</span> <span class="number token">0</span> <span class="operator token">?</span> <span class="number token">1</span> <span class="punctuation token">:</span> <span class="operator token">-</span><span class="number token">1;</span>
-<span class="punctuation token">}</span></code></pre>
+<pre class="brush: js  language-js"><code class="language-js">function sign(x) {
+    x = +x ;// convert to a number
+    if (x === 0 || isNaN(x))
+        return x;
+    return x &gt; 0 ? 1 : -1;
+}</code></pre>
 
 <p> </p>