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Update namespaces.md #278

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4 changes: 4 additions & 0 deletions docs/project/namespaces.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,9 @@

在 JavaScript 使用命名空间时， 这有一个常用的、方便的语法：


```js
let something;
(function(something) {
something.foo = 123;
})(something || (something = {}));
Expand All @@ -11,6 +13,7 @@
`something || (something = {})` 允许匿名函数 `function (something) {}` 向现有对象添加内容，或者创建一个新对象，然后向该对象添加内容。这意味着你可以拥有两个由某些边界拆成的块。

```js
let something;
(function(something) {
something.foo = 123;
})(something || (something = {}));
Expand Down Expand Up @@ -45,6 +48,7 @@ Utility.error('maybe');
`namespace` 关键字编译后的 JavaScript 代码，与我们早些时候看到的 JavaScript 代码一样。

```js
let Utility;
(function (Utility) {
// 添加属性至 Utility
})(Utility || Utility = {});
Expand Down