3 files changed, 63 insertions, 0 deletions
diff --git a/challenge-135/abigail/README.md b/challenge-135/abigail/README.md
index 5d1820d670..9affa5c624 100644
--- a/challenge-135/abigail/README.md
+++ b/challenge-135/abigail/README.md
@@ -5,6 +5,7 @@
 * [AWK](awk/ch-1.awk)
 * [Bash](bash/ch-1.sh)
 * [C](c/ch-1.c)
+* [Node.js](node/ch-1.js)
 * [Perl](perl/ch-1.pl)
 
 ## Part 2
@@ -12,4 +13,5 @@
 * [AWK](awk/ch-2.awk)
 * [Bash](bash/ch-1.sh)
 * [C](c/ch-2.c)
+* [Node.js](node/ch-1.js)
 * [Perl](perl/ch-2.pl)
diff --git a/challenge-135/abigail/node/ch-1.js b/challenge-135/abigail/node/ch-1.js
new file mode 100644
index 0000000000..a16d936f9d
--- /dev/null
+++ b/challenge-135/abigail/node/ch-1.js
@@ -0,0 +1,32 @@
+#!/usr/local/bin/node
+
+//
+// See ../README.md
+//
+
+//
+// Run as: node ch-1.js < input-file
+//
+
+  require ('readline')
+. createInterface ({input: process . stdin})   
+. on              ('line', line => {
+    line = line . replace (/^[-+]/, '') . trim ()
+    if (line . match (/[^0-9]/)) {
+        console . log ("not an integer")
+    }
+    else {
+        if (line . length % 2 == 0) {
+            console . log ("even number of digits")
+        }
+        else {
+            if (line . length < 3) {
+                console . log ("too short")
+            }
+            else {
+                console . log (line . substr ((line . length - 3) / 2, 3))
+            }
+        }
+    }
+})
+
diff --git a/challenge-135/abigail/node/ch-2.js b/challenge-135/abigail/node/ch-2.js
new file mode 100644
index 0000000000..d1ef83492a
--- /dev/null
+++ b/challenge-135/abigail/node/ch-2.js
@@ -0,0 +1,29 @@
+#!/usr/local/bin/node
+
+//
+// See ../README.md
+//
+
+//
+// Run as: node ch-2.js < input-file
+//
+
+let w = [1, 3, 1, 7, 3, 9, 1]
+
+  require ('readline')
+. createInterface ({input: process . stdin})   
+. on              ('line', line => {
+    line = line . trim ()
+    if (line . length != 7 || line . match (/[^0-9BCDFGHJKLMNPQRSTVWXYZ]/)) {
+        console . log (0)
+    }
+    else {
+        let check = 0
+        for (let i = 0; i < 7; i ++) {
+            let value = line . charCodeAt (i)
+            value -= value <= 57 ? 48 : 55
+            check += w [i] * value
+        }
+        console . log (check % 10 == 0 ? 1 : 0)
+    }
+})