diff options
Diffstat (limited to 'files/zh-tw/web/api/element/attributes/index.html')
| -rw-r--r-- | files/zh-tw/web/api/element/attributes/index.html | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/files/zh-tw/web/api/element/attributes/index.html b/files/zh-tw/web/api/element/attributes/index.html new file mode 100644 index 0000000000..ce24985c8b --- /dev/null +++ b/files/zh-tw/web/api/element/attributes/index.html @@ -0,0 +1,121 @@ +--- +title: Element.attributes +slug: Web/API/Element/attributes +translation_of: Web/API/Element/attributes +--- +<p>{{ APIRef("DOM") }}</p> + +<p> </p> + +<p>The <strong><code>Element.attributes</code></strong> property returns a live collection of all attribute nodes registered to the specified node. It is a {{domxref("NamedNodeMap")}}, not an <code>Array</code>, so it has no {{jsxref("Array")}} methods and the {{domxref("Attr")}} nodes' indexes may differ among browsers. To be more specific, <code>attributes</code> is a key/value pair of strings that represents any information regarding that attribute.</p> + +<p> </p> + +<p>Element.attribute 特性會把特定節點裡所有的屬性變成一個集合,然後回傳出來. 這是一個 <a href="https://developer.mozilla.org/en-US/docs/Web/API/NamedNodeMap">NamedNodeMap</a>, 而並非一個陣列. 所以它並沒有陣列的方法和在瀏覽器中 <a href="https://developer.mozilla.org/en-US/docs/Web/API/Attr">Attr</a>節點裡的索引值也可能不同. 更詳細的來說, attributes 是一個鍵/值的配對, 它包含了所有有關於這個節點屬性的資訊</p> + +<p> </p> + +<p>Syntax</p> + +<pre class="syntaxbox">var <em>attr</em> =<em> element</em>.attributes; +</pre> + +<h2 id="Example" name="Example">Example</h2> + +<h3 id="Basic_examples">Basic examples</h3> + +<pre class="brush: js">// Get the first <p> element in the document +var para = document.getElementsByTagName("p")[0]; +var atts = para.attributes;</pre> + +<h3 id="Enumerating_elements_attributes" name="Enumerating_elements_attributes">Enumerating elements attributes</h3> + +<p>Numerical indexing is useful for going through all of an element's attributes.<br> + The following example runs through the attribute nodes for the element in the document with id "paragraph", and prints each attribute's value.</p> + +<pre class="brush: html"><!DOCTYPE html> + +<html> + + <head> + <title>Attributes example</title> + <script type="text/javascript"> + function listAttributes() { + var paragraph = document.getElementById("paragraph"); + var result = document.getElementById("result"); + + // First, let's verify that the paragraph has some attributes + if (paragraph.hasAttributes()) { + var attrs = paragraph.attributes; + var output = ""; + for(var i = attrs.length - 1; i >= 0; i--) { + output += attrs[i].name + "->" + attrs[i].value; + } + result.value = output; + } else { + result.value = "No attributes to show"; + } + } + </script> + </head> + +<body> + <p id="paragraph" style="color: green;">Sample Paragraph</p> + <form action=""> + <p> + <input type="button" value="Show first attribute name and value" + onclick="listAttributes();"> + <input id="result" type="text" value=""> + </p> + </form> +</body> +</html></pre> + +<h2 id="Specifications">Specifications</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + </thead> + <tbody> + <tr> + <td>{{SpecName('DOM WHATWG', '#dom-element-attributes', 'Element.attributes')}}</td> + <td>{{Spec2('DOM WHATWG')}}</td> + <td>From {{SpecName('DOM3 Core')}}, moved from {{domxref("Node")}} to {{domxref("Element")}}</td> + </tr> + <tr> + <td>{{SpecName('DOM3 Core', 'core.html#ID-84CF096', 'Element.attributes')}}</td> + <td>{{Spec2('DOM3 Core')}}</td> + <td>No change from {{SpecName('DOM2 Core')}}</td> + </tr> + <tr> + <td>{{SpecName('DOM2 Core', 'core.html#ID-84CF096', 'Element.attributes')}}</td> + <td>{{Spec2('DOM2 Core')}}</td> + <td>No change from {{SpecName('DOM1')}}</td> + </tr> + <tr> + <td>{{SpecName('DOM1', 'level-one-core.html#ID-84CF096', 'Element.attributes')}}</td> + <td>{{Spec2('DOM1')}}</td> + <td>Initial definition.</td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">Browser compatibility</h2> + +<div class="hidden"> +<p>The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p> +</div> + +<p>{{Compat("api.Element.attributes")}}</p> + +<h2 id="See_also">See also</h2> + +<ul> + <li>{{domxref("NamedNodeMap")}}, the interface of the returned object</li> + <li>Cross-browser compatibility considerations: on <a class="external" href="http://www.quirksmode.org/dom/w3c_core.html#attributes" title="http://www.quirksmode.org/dom/w3c_core.html#attributes">quirksmode</a></li> +</ul> |