CIS 119 Text manipulation using regular expressions

Example

Code

window.onload = initForm;

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

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