diff options
Diffstat (limited to 'files/zh-tw/web/javascript')
| -rw-r--r-- | files/zh-tw/web/javascript/reference/global_objects/null/index.html | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/files/zh-tw/web/javascript/reference/global_objects/null/index.html b/files/zh-tw/web/javascript/reference/global_objects/null/index.html index 0af88facab..2cee8a369e 100644 --- a/files/zh-tw/web/javascript/reference/global_objects/null/index.html +++ b/files/zh-tw/web/javascript/reference/global_objects/null/index.html @@ -13,7 +13,7 @@ translation_of: Web/JavaScript/Reference/Global_Objects/null <h2 id="描述">描述</h2> -<p>The value <code>null</code> is written with a literal, <code>null</code> (it's not an identifer for a property of the global object like {{jsxref("Global_Objects/undefined","undefined")}} can be). In APIs, <code>null</code> is often retrieved in place where an object can be expected but no object is relevant. When checking for null or undefined beware of the <a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators">differences between equality (==) and identity (===) operators</a> (type-conversion is performed with the former).</p> +<p>The value <code>null</code> is written with a literal, <code>null</code> (it's not an identifier for a property of the global object like {{jsxref("Global_Objects/undefined","undefined")}} can be). In APIs, <code>null</code> is often retrieved in place where an object can be expected but no object is relevant. When checking for null or undefined beware of the <a href="/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators">differences between equality (==) and identity (===) operators</a> (type-conversion is performed with the former).</p> <pre class="brush: js">// foo does not exist. It is not defined and has never been initialized: > foo |