diff options
Diffstat (limited to 'files/zh-cn/web/javascript/reference/statements/const/index.html')
-rw-r--r-- | files/zh-cn/web/javascript/reference/statements/const/index.html | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/files/zh-cn/web/javascript/reference/statements/const/index.html b/files/zh-cn/web/javascript/reference/statements/const/index.html index b096efd17f..de8e0c7f39 100644 --- a/files/zh-cn/web/javascript/reference/statements/const/index.html +++ b/files/zh-cn/web/javascript/reference/statements/const/index.html @@ -19,7 +19,7 @@ translation_of: Web/JavaScript/Reference/Statements/const <h2 id="语法">语法</h2> -<pre class="syntaxbox notranslate">const <em>name1 = <em>value1 [</em>, <em>name2</em> = <em>value2</em><em> [</em>, ... [</em>, <em>nameN</em> = <em>valueN]]]</em>;</pre> +<pre class="syntaxbox">const <em>name1 = <em>value1 [</em>, <em>name2</em> = <em>value2</em><em> [</em>, ... [</em>, <em>nameN</em> = <em>valueN]]]</em>;</pre> <dl> <dt><code>nameN</code></dt> @@ -44,7 +44,7 @@ translation_of: Web/JavaScript/Reference/Statements/const <p>常量在声明的时候可以使用大小写,但通常情况下全部用大写字母。</p> -<pre class="brush: js; notranslate">// 定义常量MY_FAV并赋值7 +<pre class="brush: js;">// 定义常量MY_FAV并赋值7 const MY_FAV = 7; // 报错 - Uncaught TypeError: Assignment to constant variable. @@ -69,7 +69,7 @@ let MY_FAV = 20; <p>注意块作用域的性质很重要</p> -<pre class="brush: js notranslate">if (MY_FAV === 7) { +<pre class="brush: js">if (MY_FAV === 7) { // 没问题,并且创建了一个块作用域变量 MY_FAV // (works equally well with let to declare a block scoped non const variable) let MY_FAV = 20; @@ -87,7 +87,7 @@ console.log('my favorite number is ' + MY_FAV); <h3 id="常量要求一个初始值">常量要求一个初始值</h3> -<pre class="brush: js notranslate">// 报错 +<pre class="brush: js">// 报错 // Uncaught SyntaxError: Missing initializer in const declaration const FOO; @@ -97,7 +97,7 @@ const FOO; <p>常量可以定义成对象和数组</p> -<pre class="brush: js notranslate">const MY_OBJECT = {'key': 'value'}; +<pre class="brush: js">const MY_OBJECT = {'key': 'value'}; // 重写对象和上面一样会失败 // Uncaught TypeError: Assignment to constant variable. |