CIS 119 Text manipulation using regular expressions

Example

Code

"use strict";
String.prototype.properCaseName = function () {
   /^([^ ,])([^ ,]*,? ?)([^ ,])([^ ,]*)$/.exec(this.toString());
   return RegExp.$1.toUpperCase() + RegExp.$2
      + RegExp.$3.toUpperCase() + RegExp.$4;
};

function swapNames(f) {
   let names = document.getElementById("names").value;
   let array = names.split(/\s*\n\s*/);
   for (var i=0; i<array.length; i++) {
      array[i] = array[i].replace(/^([^ ,]+),? ?(.+)$/, "$2, $1").properCaseName();
   }
   array.sort();
   document.getElementById("names").value = array.join("\n");
}

function initForm() {
   let f = document.getElementById("frm1");
   if (f != null) f.onsubmit = function () { swapNames(f); return false; }
}

window.onload = initForm;