From 26c072ac09a1b63dc379c8e60f808833293d3062 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AD=99=E5=85=88=E5=AF=8C?= <1102654482@qq.com>
Date: Fri, 14 May 2021 08:14:01 +0800
Subject: [PATCH] =?UTF-8?q?0090=20=E5=AD=90=E9=9B=86=E9=97=AE=E9=A2=98II?=
 =?UTF-8?q?=20Javascript?=
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---
 problems/0090.子集II.md | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/problems/0090.子集II.md b/problems/0090.子集II.md
index cc5fd571..c7d6026e 100644
--- a/problems/0090.子集II.md
+++ b/problems/0090.子集II.md
@@ -179,6 +179,36 @@ Python：
 
 Go：
 
+Javascript:
+
+```Javascript
+
+var subsetsWithDup = function(nums) {
+    let result = []
+    let path = []
+    let sortNums = nums.sort((a, b) => {
+        return a - b
+    })
+    function backtracing(startIndex, sortNums) {
+        result.push(path.slice(0))
+        if(startIndex > nums.length - 1) {
+            return
+        }
+        for(let i = startIndex; i < nums.length; i++) {
+            if(i > startIndex && nums[i] === nums[i - 1]) {
+                continue
+            }
+            path.push(nums[i])
+            backtracing(i + 1, sortNums)
+            path.pop()
+        }
+    }
+    backtracing(0, sortNums)
+    return result
+};
+
+```
+