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Diffstat (limited to 'files/zh-cn/web/api/window/length/index.html')
| -rw-r--r-- | files/zh-cn/web/api/window/length/index.html | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/files/zh-cn/web/api/window/length/index.html b/files/zh-cn/web/api/window/length/index.html new file mode 100644 index 0000000000..b5e37e034a --- /dev/null +++ b/files/zh-cn/web/api/window/length/index.html @@ -0,0 +1,21 @@ +--- +title: window.length +slug: Web/API/Window/length +translation_of: Web/API/Window/length +--- +<div> + {{ApiRef}}</div> +<h2 id="Summary" name="Summary">概述</h2> +<p>返回当前窗口中包含的框架数量(框架包括<code>frame</code>和<code>iframe</code>两种元素).</p> +<h2 id="Syntax" name="Syntax">语法</h2> +<pre class="syntaxbox"><i>framesCount</i> = window.length; +</pre> +<ul> + <li><code>framesCount</code>就是该窗口中框架的数量.</li> +</ul> +<h2 id="Example" name="Example">示例</h2> +<pre class="brush:js">if (window.length) { + // 该窗口包含至少一个子框架 +}</pre> +<h2 id="Specification" name="Specification">规范</h2> +<p>{{DOM0}}</p> |