diff --git a/problems/0763.划分字母区间.md b/problems/0763.划分字母区间.md
index bcdd71dc..1e2fcc03 100644
--- a/problems/0763.划分字母区间.md
+++ b/problems/0763.划分字母区间.md
@@ -128,7 +128,26 @@ class Solution:
 
 Go：
 
-
+Javascript:
+```Javascript
+var partitionLabels = function(s) {
+    let hash = {}
+    for(let i = 0; i < s.length; i++) {
+        hash[s[i]] = i
+    }
+    let result = []
+    let left = 0
+    let right = 0
+    for(let i = 0; i < s.length; i++) {
+        right = Math.max(right, hash[s[i]])
+        if(right === i) {
+            result.push(right - left + 1)
+            left = i + 1
+        }
+    }
+    return result
+};
+```
 
 
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