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docs/javascript/Reference/Global_Objects/Number/POSITIVE_INFINITY.html

@@ -40,11 +40,11 @@
 <p>You might use the <code>Number.POSITIVE_INFINITY</code> property to indicate an error condition that returns a finite number in case of success. Note, however, that <a href="Reference/Global_Objects/isFinite" title="该全局 isFinite() 函数用来判断被传入的参数值是否为一个有限数值（finite number）。在必要情况下，参数会首先转为一个数值。"><code>isFinite</code></a> would be more appropriate in such a case.</p>
 <h2 id="示例">示例</h2>
 <p>下例中，赋值给变量 <code>bigNumber</code> 一个大于 JavaScript 中最大值的值。当 <code>if</code> 语句执行时，变量 <code>bigNumber</code> 值为 "<code>Infinity</code>"， 因此在继续执行代码前，为变量 <code>bigNumber</code> 设置一个容易管理的值。</p>
-<pre class="brush: js">var bigNumber = Number.MAX_VALUE * 2
+<pre><code  class="language-javascript">var bigNumber = Number.MAX_VALUE * 2
 if (bigNumber == Number.POSITIVE_INFINITY) {
  bigNumber = returnFinite();
 }
-</pre>
+</code></pre>
 <h2 id="规范">规范</h2>
 <table class="standard-table">
 <tbody>