Tracking lead source with UTM parameters

If the people lands on contact us page with an utm and fills up the form, they would be redirected to a thank you page, at this point you can track the referral.

So you can create smarts campaigns as follow

Hi Melissa,

This script saves UTM parameters in your website cookie whenever there are any UTM parameters in the URL, even if it leads to a non-Marketo webpage and the user visits several other pages on your website before filling out a form

var utmCookie = {

  cookieNamePrefix: "",

  utmParams: [

  "utm_source",

  "utm_medium",

  "utm_campaign",

  "utm_term",

  "utm_content"

  ],

  cookieExpiryDays: 365,

  // From quirksmode.org/js/cookies.html

  createCookie: function (name, value, days) {

  if (days) {

  var date = new Date();

  date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));

  var expires = "; expires=" + date.toGMTString();

  } else

  var expires = "";

  document.cookie = this.cookieNamePrefix + name + "=" + value + expires + "; domain=.abilitynetwork.com; path=/";

  },

  readCookie: function (name) {

  var nameEQ = this.cookieNamePrefix + name + "=";

  var ca = document.cookie.split(';');

  for (var i = 0; i < ca.length; i++) {

  var c = ca[i];

  while (c.charAt(0) == ' ')

  c = c.substring(1, c.length);

  if (c.indexOf(nameEQ) == 0)

  return c.substring(nameEQ.length, c.length);

  }

  return null;

  },

  eraseCookie: function (name) {

  this.createCookie(name, "", -1);

  },

  getParameterByName: function (name) {

  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");

  console.log(name);

  var regexS = "[\\?&]" + name + "=([^&#]*)";

  var regex = new RegExp(regexS);

  var results = regex.exec(window.location.search);

  if (results == null) {

  return "";

  } else {

  return decodeURIComponent(results[1].replace(/\+/g, " "));

  }

  },

  utmPresentInUrl: function () {

  var present = false;

  for (var i = 0; i < this.utmParams.length; i++) {

  var param = this.utmParams[i];

  var value = this.getParameterByName(param);

  console.log(param + ' = ' + value);

  if (value != "" && value != undefined) {

  present = true;

  }

  }

  return present;

  },

  writeUtmCookieFromParams: function () {

  for (var i = 0; i < this.utmParams.length; i++) {

  var param = this.utmParams[i];

  var value = this.getParameterByName(param);

  this.writeCookieOnce(param, value)

  }

  },

  writeCookieOnce: function (name, value) {

  var existingValue = this.readCookie(name);

  if (!existingValue) {

  this.createCookie(name, value, this.cookieExpiryDays);

  }

  },

  writeReferrerOnce: function () {

  value = document.referrer;

  if (value === "" || value === undefined) {

  this.writeCookieOnce("referrer", "direct");

  } else {

  this.writeCookieOnce("referrer", value);

  }

  },

  referrer: function () {

  return this.readCookie("referrer");

  }

};

utmCookie.writeReferrerOnce();

if (utmCookie.utmPresentInUrl()) {

  utmCookie.writeUtmCookieFromParams();

}