study/uTools-Manuals
1
0
Fork 0
mirror of https://github.com/fofolee/uTools-Manuals.git synced 2025-12-15 07:06:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

语法高亮，滚动条美化，设置页面调整

Browse Source
This commit is contained in:
fofolee
2019-04-19 02:41:09 +08:00
parent 1e8f76c000
commit 359d29ee0b
1590 changed files with 12328 additions and 11441 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
docs/javascript/Reference/Global_Objects/Array/unobserve.html
View File

@@ -5,7 +5,7 @@
</div></div>
<p>Array<strong>.unobserve()方法用来移除</strong><a href="Reference/Global_Objects/Array/observe" title='Array.observe() 方法用于异步监视数组发生的变化，类似于针对对象的 Object.observe() 。当数组的值发生变化时，它按发生顺序提供了一个变化流。与 Object.observe() 类似，它由如下可接受的变化类型列表["add"、"update"、"delete"、"splice"]触发。'><code>Array.observe()</code></a>设置的所有观察者。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><code>Array.unobserve(<var>arr</var>, <var>callback</var>)</code></pre>
<pre><code class="language-javascript"><code>Array.unobserve(<var>arr</var>, <var>callback</var>)</code></code></pre>
<h3 id="参数">参数</h3>
<dl>
<dt><code>arr</code></dt>
@@ -19,7 +19,7 @@
<p>回调函数应该是一个函数的引用并且不能是匿名函数， 因为这个函数需要用来移除前面的观察者， 如果用匿名函数是没有用的，将不能移除任何观察者。</p>
<h2 id="例子">例子</h2>
<h3 id="停止观察一个数组">停止观察一个数组</h3>
<pre class="brush: js">var arr = [1, 2, 3];
<pre><code class="language-javascript">var arr = [1, 2, 3];
var observer = function(changes) {
  console.log(changes);
@@ -33,9 +33,9 @@ arr.push(4);
Array.unobserve(arr, observer);
arr.pop();
// The callback wasn't called</pre>
// The callback wasn't called</code></pre>
<h3 id="使用匿名函数">使用匿名函数</h3>
<pre class="brush: js">var persons = ['Khalid', 'Ahmed', 'Mohammed'];
<pre><code class="language-javascript">var persons = ['Khalid', 'Ahmed', 'Mohammed'];
Array.observe(persons, function (changes) {
  console.log(changes);
@@ -51,7 +51,7 @@ Array.unobserve(persons, function (changes) {
persons.push('Abdullah');
// [{type: "splice", object: &lt;arr&gt;, index: 2, removed: [], addedCount: 1 }]
// The callback will always be called
</pre>
</code></pre>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div>
<div>