v0.1.0 add visa and master card validator.

Author: SFantasy

README.md

@@ -36,6 +36,8 @@ validator.isEmail('abc@gmail.com'); // => true
 - isAllDigit(str): check if it is a string only contains digits
 - isChineseTel(str): check if it is a Chinese cell-phone number
 - isChineseIdCard(str): check if it is a 18-digit Chinese ID card number
+- isVisaCard(str): check if it is a Visa card
+- isMasterCard(str): check if it is a Master card
 
 ## Test
 

lib/index.js

@@ -95,6 +95,24 @@ module.exports = {
 
       return temp[17] === validCodeArr[sum % 11];
     }
+  },
+
+  /**
+   * check if it is a Visa card
+   * @param str
+   * @returns {boolean}
+   */
+  isVisaCard: function (str) {
+    return /^4[0-9]{12}(?:[0-9]{3})?$/.test(str);
+  },
+
+  /**
+   * check if it is a Master card
+   * @param str
+   * @returns {boolean}
+   */
+  isMasterCard: function (str) {
+    return /^5[1-5][0-9]{14}$/.test(str);
   }
 
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "is-valid",
-  "version": "0.0.3",
+  "version": "0.1.0",
   "description": "String validator for more",
   "main": "index.js",
   "scripts": {