Merge pull request #364 from ChrisLin1997/feature/js-62

添加0062.不同路径Javascript版本

problems/0062.不同路径.md

@@ -308,6 +308,27 @@ func uniquePaths(m int, n int) int {
 }
 ```
 
+Javascript：
+```Javascript
+var uniquePaths = function(m, n) {
+    const dp = Array(m).fill().map(item => Array(n))
+    
+    for (let i = 0; i < m; ++i) {
+        dp[i][0] = 1
+    }
+    
+    for (let i = 0; i < n; ++i) {
+        dp[0][i] = 1
+    }
+    
+    for (let i = 1; i < m; ++i) {
+        for (let j = 1; j < n; ++j) {
+            dp[i][j] = dp[i - 1][j] + dp[i][j - 1]
+        }
+    }
+    return dp[m - 1][n - 1]
+};
+```
 
 
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