feat: 修改了代码段

Author: eveningwater.123

README.md

@@ -421,7 +421,7 @@
 - [公里转换成英里-2022-11-10](codes/javascript/km-to-miles.md)
 - [最后一个数组项-2022-11-11](codes/javascript/last.md)
 - [每月最后一天-2022-11-12](codes/javascript/lastDateOfMonth.md)
-- [最后 n 个元素-2022-11-13](codes/javascript/lastN.md)
+- [最后 n 个元素-2022-11-13](codes/javascript/last-n.md)
 - [最小公倍数-2022-11-14](codes/javascript/lcm.md)
 - [从左边开始截取字符串生成器-2022-11-15](codes/javascript/leftSubstrGenerator.md)
 - [编辑距离-2022-11-16](codes/javascript/levenshteinDistance.md)

codes/javascript/html/join.html

@@ -953,7 +953,10 @@ <h3 style="color: #667eea; margin: 20px 0 15px 0;">使用示例</h3>
 // 输出: ${JSON.stringify(result)}`;
 
                         codePreview.textContent = code;
+                        // 清除之前的高亮状态，然后重新高亮
                         if (window.hljs) {
+                            delete codePreview.dataset.highlighted;
+                            codePreview.className = 'language-javascript';
                             hljs.highlightElement(codePreview);
                         }
                     }

codes/javascript/html/k-means.html

@@ -1275,7 +1275,10 @@ <h3 style="color: #667eea; margin: 20px 0 15px 0;">应用场景</h3>
 ${this.centroids ? this.centroids.map((c, i) => `// 簇 ${i}: (${c[0].toFixed(2)}, ${c[1].toFixed(2)})`).join('\n') : ''}`;
 
                 codePreview.textContent = code;
+                // 清除之前的高亮状态，然后重新高亮
                 if (window.hljs) {
+                    delete codePreview.dataset.highlighted;
+                    codePreview.className = 'language-javascript';
                     hljs.highlightElement(codePreview);
                 }
 

codes/javascript/html/k-nearest-neighbors.html

@@ -1377,7 +1377,10 @@ <h3 style="color: #667eea; margin: 20px 0 15px 0;">K 值选择建议</h3>
 ${this.neighbors ? this.neighbors.map((n, i) => `// #${i + 1}: 类别 ${n.label}, 距离 ${n.dist.toFixed(2)}`).join('\n') : ''}`;
 
                 codePreview.textContent = code;
+                // 清除之前的高亮状态，然后重新高亮
                 if (window.hljs) {
+                    delete codePreview.dataset.highlighted;
+                    codePreview.className = 'language-javascript';
                     hljs.highlightElement(codePreview);
                 }
 

codes/javascript/html/km-to-miles.html

@@ -1285,7 +1285,10 @@ <h3 style="color: #667eea; margin: 20px 0 15px 0;">使用示例</h3>
                 }
 
                 codePreview.textContent = code;
+                // 清除之前的高亮状态，然后重新高亮
                 if (window.hljs) {
+                    delete codePreview.dataset.highlighted;
+                    codePreview.className = 'language-javascript';
                     hljs.highlightElement(codePreview);
                 }
 

codes/javascript/html/last-date-of-month.html

@@ -1303,7 +1303,10 @@ <h3 style="color: #f5576c; margin: 20px 0 15px 0;">特点</h3>
 // ${date.getFullYear()}年${date.getMonth() + 1}月共 ${new Date(lastDate).getDate()} 天`;
 
                 codePreview.textContent = code;
+                // 清除之前的高亮状态，然后重新高亮
                 if (window.hljs) {
+                    delete codePreview.dataset.highlighted;
+                    codePreview.className = 'language-javascript';
                     hljs.highlightElement(codePreview);
                 }