Methods: Add additional method for currency

Closes gh-701

Author: James Thompson

src/additional/currency.js

@@ -0,0 +1,41 @@
+/**
+ * Validates currencies with any given symbols by @jameslouiz
+ * Symbols can be optional or required. Symbols required by default
+ *
+ * Usage examples:
+ *  currency: ['£', false] - Use false for soft currency validation
+ *  currency: ['$', false]
+ *  currency: ['RM', false] - also works with text based symbols such as 'RM' - Malaysia Ringgit etc
+ *
+ *  <input class="currencyInput" name="currencyInput">
+ *
+ * Soft symbol checking
+ *  currencyInput: {
+ *     currency: ['$', false]
+ *  }
+ *
+ * Strict symbol checking (default)
+ *  currencyInput: {
+ *     currency: '$'
+ *     //OR
+ *     currency: ['$', true]
+ *  }
+ *
+ * Multiple Symbols
+ *  currencyInput: {
+ *     currency: '$,£,¢'
+ *  }
+ */
+jQuery.validator.addMethod('currency', function(value, element, param) {
+    var paramType = typeof param === 'string',
+        symbol = paramType ? param : param[0],
+        soft = paramType ? true : param[1],
+        regex;
+
+    symbol = symbol.replace(/,/g, '');
+    symbol = soft ? symbol + ']' : symbol + ']?';
+    regex = '^[' + symbol + '([1-9]{1}[0-9]{0,2}(\\,[0-9]{3})*(\\.[0-9]{0,2})?|[1-9]{1}[0-9]{0,}(\\.[0-9]{0,2})?|0(\\.[0-9]{0,2})?|(\\.[0-9]{1,2})?)$';
+    regex = new RegExp(regex);
+    return this.optional(element) || regex.test(value);
+
+}, 'Please specify a valid currency');

test/methods.js

@@ -1166,4 +1166,28 @@ test("rangeWords", function(){
 	ok(!method( "<div>But you can “count” me as too long</div>", rangeWords), "Too many words with smartquotes w/ HTML");
 });
 
+test("currency", function() { // Works with any symbol
+    var method = methodTest( "currency" );
+    ok( method( "£9", '£'), "Valid currency" );
+    ok( method( "£9.9", '£'), "Valid currency" );
+    ok( method( "£9.99", '£'), "Valid currency" );
+    ok( method( "£9.90", '£'), "Valid currency" );
+    ok( method( "£9,999.9", '£'), "Valid currency" );
+    ok( method( "£9,999.99", '£'), "Valid currency" );
+    ok( method( "£9,999,999.9", '£'), "Valid currency" );
+    ok( method( "9", ['£', false]), "Valid currency" );
+    ok( method( "9.9", ['£', false]), "Valid currency" );
+    ok( method( "9.99", ['£', false]), "Valid currency" );
+    ok( method( "9.90", ['£', false]), "Valid currency" );
+    ok( method( "9,999.9", ['£', false]), "Valid currency" );
+    ok( method( "9,999.99", ['£', false]), "Valid currency" );
+    ok( method( "9,999,999.9", ['£', false]), "Valid currency" );
+    ok(!method( "9,", '£'), "Invalid currency" );
+    ok(!method( "9,99.99", '£'), "Invalid currency" );
+    ok(!method( "9,", '£'), "Invalid currency" );
+    ok(!method( "9.999", '£'), "Invalid currency" );
+    ok(!method( "9.999", '£'), "Invalid currency" );
+    ok(!method( "9.99,9", '£'), "Invalid currency" );
+});
+
 })(jQuery);