1 files changed, 52 insertions, 0 deletions
diff --git a/challenge-162/roger-bell-west/javascript/ch-1.js b/challenge-162/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..352d732648
--- /dev/null
+++ b/challenge-162/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,52 @@
+#! /usr/bin/node
+
+function generate(in0) {
+    let in1 = in0.replace(/[^0-9]+/g,"")
+    if (in1.length < 12) {
+        return 99
+    }
+    in1 = in1.substring(0,12)
+    let s = 0
+    let m = 1
+    for (let i of String(in1)) {
+        s += parseInt(i) * m
+        m = 4 - m
+    }
+    return (10-(s % 10)) % 10
+}
+
+function validate(in0) {
+    let in1 = in0.replace(/[^0-9]+/g,"")
+    if (in1.length < 13) {
+        return false
+    }
+    return generate(in1) == parseInt(in1.charAt(12))
+}
+
+if (generate("978-0-306-40615-") == 7) {
+    process.stdout.write("Pass")
+} else {
+    process.stdout.write("FAIL")
+}
+process.stdout.write(" ");
+
+if (generate("978-0-306-40615-7") == 7) {
+    process.stdout.write("Pass")
+} else {
+    process.stdout.write("FAIL")
+}
+process.stdout.write(" ");
+
+if (validate("978-0-306-40615-7") == true) {
+    process.stdout.write("Pass")
+} else {
+    process.stdout.write("FAIL")
+}
+process.stdout.write(" ");
+
+if (validate("978-0-306-46015-7") == false) {
+    process.stdout.write("Pass")
+} else {
+    process.stdout.write("FAIL")
+}
+process.stdout.write("\n");