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Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/string/charcodeat')
| -rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/string/charcodeat/index.html | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/files/zh-cn/web/javascript/reference/global_objects/string/charcodeat/index.html b/files/zh-cn/web/javascript/reference/global_objects/string/charcodeat/index.html index ad5bd693df..149492f9d0 100644 --- a/files/zh-cn/web/javascript/reference/global_objects/string/charcodeat/index.html +++ b/files/zh-cn/web/javascript/reference/global_objects/string/charcodeat/index.html @@ -39,8 +39,8 @@ translation_of: Web/JavaScript/Reference/Global_Objects/String/charCodeAt <p>Unicode 码点(code points)的范围从 <code>0</code> 到 <code>1114111</code> <code>(0x10FFFF)</code>。开头的 128 个 Unicode 编码单元和 ASCII 字符编码一样。(关于 Unicode 的更多信息,可查看 <a href="https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Guide/Values,_variables,_and_literals#Unicode">JavaScript Guide</a>。)</p> -<div class="blockIndicator note"> -<p><strong>注意:</strong>,<code>charCodeAt</code> 总是返回一个小于 65,536 的值。这是因为高位编码单元(higher code point)使用一对(低位编码 lower valued)代理伪字符("surrogate" pseudo-characters)来表示,从而构成一个真正的字符。</p> +<div class="note"> +<p><strong>备注:</strong>,<code>charCodeAt</code> 总是返回一个小于 65,536 的值。这是因为高位编码单元(higher code point)使用一对(低位编码 lower valued)代理伪字符("surrogate" pseudo-characters)来表示,从而构成一个真正的字符。</p> <p>因此,为了检查(或重现)<code>65536</code> 及以上编码字符的完整字符,需要在获取 <code>charCodeAt(i)</code> 的值的同时获取 <code>charCodeAt(i+1)</code> 的值(如同用两个字母操纵一个字符串),或者改为获取 <code>codePointAt(i)</code> 的值。参看下面例 2 和例 3。</p> </div> |
