Create AtBash.js

aryabharat · web-flow · commit 4f19129a69fb · 2020-10-01T13:18:18.000+05:30
diff --git a/Ciphers/AtBash.js b/Ciphers/AtBash.js
@@ -0,0 +1,29 @@
+function enAtbash(mensage) {    
+
+    var alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    var tebahpla = "ZYXWVUTSRQPONMLKJIHGFEDCBA";
+    var alphabet1 = "abcdefghijklmnopqrstuvwxyz";
+    var tebahpla1 = "zyxwvutsrqponmlkjihgfedcba";
+    var decoded_string = "";
+
+    for (var i = 0; i < mensage.length; i++) {
+        var coded_letra = mensage.charAt(i);
+        
+	if (/[^a-zA-Z]/.test(mensage[i])) {
+		decoded_string = decoded_string+mensage[i];	
+	}
+	else if (mensage[i] === mensage[i].toUpperCase()) {
+	    	var letraPosMayus = alphabet.indexOf(coded_letra);
+	    	var tebLetraPosMayus = tebahpla.charAt(letraPosMayus);
+	    	decoded_string = decoded_string+tebLetraPosMayus;
+        } else {
+	    	var letraPosMinus1 = alphabet1.indexOf(coded_letra);
+	    	var tebLetraPosMinus1 = tebahpla1.charAt(letraPosMinus1);
+	    	decoded_string = decoded_string + tebLetraPosMinus1;
+        }
+
+    }
+    return decoded_string;
+}
+
+document.write(enAtbash("Hello World!"));
