0968.监控二叉树.md Javascript

problems/0968.监控二叉树.md

@@ -369,7 +369,42 @@ class Solution:
 ```
 Go：
 
+Javascript:
+```Javascript
+var minCameraCover = function(root) {
+    let result = 0
+    function traversal(cur) {
+        if(cur === null) {
+            return 2
+        }
 
+        let left = traversal(cur.left)
+        let right = traversal(cur.right)
+
+        if(left === 2 && right === 2) {
+            return 0
+        }
+
+        if(left === 0 || right === 0) {
+            result++
+            return 1
+        }
+
+        if(left === 1 || right === 1) {
+            return 2
+        }
+
+        return -1
+    }
+
+    if(traversal(root) === 0) {
+        result++
+    }
+
+    return result
+               
+};
+```
 
 
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