添加0063.不同路径II Javascript版本

problems/0063.不同路径II.md

@@ -279,6 +279,30 @@ func uniquePathsWithObstacles(obstacleGrid [][]int) int {
 
 ```
 
+Javascript
+``` Javascript
+var uniquePathsWithObstacles = function(obstacleGrid) {
+    const m = obstacleGrid.length
+    const n = obstacleGrid[0].length
+    const dp = Array(m).fill().map(item => Array(n).fill(0))
+    
+    for (let i = 0; i < m && obstacleGrid[i][0] === 0; ++i) {
+        dp[i][0] = 1
+    }
+    
+    for (let i = 0; i < n && obstacleGrid[0][i] === 0; ++i) {
+        dp[0][i] = 1
+    }
+    
+    for (let i = 1; i < m; ++i) {
+        for (let j = 1; j < n; ++j) {
+            dp[i][j] = obstacleGrid[i][j] === 1 ? 0 : dp[i - 1][j] + dp[i][j - 1]
+        }
+    }
+        
+    return dp[m - 1][n - 1]
+};
+```
 
 
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