diff --git a/searching/Search_string.js b/searching/Search_string.js
new file mode 100644
index 0000000..3f6435f
--- /dev/null
+++ b/searching/Search_string.js
@@ -0,0 +1,36 @@
+<script>
+
+// Javascript program to find lexicographically next
+// string
+
+function nextWord(s)
+{
+	// If string is empty.
+	if (s == "")
+		return "a";
+
+	// Find first character from right
+	// which is not z.
+	
+	var i = s.length - 1;
+	while (s[i] == 'z' && i >= 0)
+		i--;
+
+	// If all characters are 'z', append
+	// an 'a' at the end.
+	if (i == -1)
+		s = s + 'a';
+
+	// If there are some non-z characters
+	else
+		s[i] = String.fromCharCode(s[i].charCodeAt(0)+1);
+
+	return s.join('');
+}
+
+// Driver code
+var str = "samez".split('');
+document.write( nextWord(str));
+
+// This code is contributed by noob2000.
+</script>