fix: 修复随机数生成器和随机抽取器的输出问题

- 随机数生成器: 添加输入验证、防止无限循环、范围检查
- 随机抽取器: 修复换行符转义问题、添加抽取数量验证

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: chao5go

tools/random-number/app.html

@@ -169,20 +169,49 @@ <h1>随机数生成器</h1>
     const max = parseInt(document.getElementById('random-max').value, 10);
     const count = parseInt(document.getElementById('random-count').value, 10) || 1;
     const unique = document.getElementById('random-unique').checked;
+
+    // 验证输入
+    if (isNaN(min) || isNaN(max) || isNaN(count)) {
+        alert('请输入有效的数字');
+        return;
+    }
     if (min > max) {
         alert('最小值不能大于最大值');
         return;
     }
+    if (count < 1) {
+        alert('数量必须大于0');
+        return;
+    }
+    if (count > 1000) {
+        alert('单次最多生成1000个随机数');
+        return;
+    }
+    if (unique && (max - min + 1) < count) {
+        alert(`范围 ${min}-${max} 内只有 ${max - min + 1} 个数字，无法生成 ${count} 个不重复的随机数`);
+        return;
+    }
+
     const results = [];
     const used = new Set();
-    while (results.length < count) {
+    let attempts = 0;
+    const maxAttempts = count * 100; // 防止无限循环
+
+    while (results.length < count && attempts < maxAttempts) {
+        attempts++;
         const num = Math.floor(Math.random() * (max - min + 1)) + min;
         if (unique) {
             if (used.has(num)) continue;
             used.add(num);
         }
         results.push(num);
     }
+
+    if (results.length < count) {
+        alert('生成随机数失败，请尝试增大范围或减少数量');
+        return;
+    }
+
     document.getElementById('random-output').value = results.join(', ');
 }
 

tools/random-picker/app.html

@@ -163,28 +163,38 @@ <h1>随机抽取器</h1>
 
     <script>
         function pickRandomItems() {
-                const items = document.getElementById('picker-items').value.split(/?
-/).filter(Boolean);
-                const count = parseInt(document.getElementById('picker-count').value, 10) || 1;
-                const unique = document.getElementById('picker-unique').checked;
-                if (items.length === 0) {
-                    alert('请先输入列表');
-                    return;
-                }
-                const pool = [...items];
-                const result = [];
-                for (let i = 0; i < count && pool.length > 0; i++) {
-                    const index = Math.floor(Math.random() * pool.length);
-                    result.push(pool[index]);
-                    if (unique) pool.splice(index, 1);
-                }
-                document.getElementById('picker-output').value = result.join('
-');
+            const items = document.getElementById('picker-items').value.split(/\r?\n/).filter(Boolean);
+            const count = parseInt(document.getElementById('picker-count').value, 10) || 1;
+            const unique = document.getElementById('picker-unique').checked;
+
+            if (items.length === 0) {
+                alert('请先输入列表');
+                return;
+            }
+            if (count < 1) {
+                alert('抽取数量必须大于0');
+                return;
             }
+            if (unique && count > items.length) {
+                alert(`列表中只有 ${items.length} 项，无法抽取 ${count} 个不重复项目`);
+                return;
+            }
+
+            const pool = [...items];
+            const result = [];
 
-            function clearOutput() {
-                document.getElementById('picker-output').value = '';
+            for (let i = 0; i < count && pool.length > 0; i++) {
+                const index = Math.floor(Math.random() * pool.length);
+                result.push(pool[index]);
+                if (unique) pool.splice(index, 1);
             }
+
+            document.getElementById('picker-output').value = result.join('\n');
+        }
+
+        function clearOutput() {
+            document.getElementById('picker-output').value = '';
+        }
     </script>
 
     <script src="/assets/clicks.js" defer></script>