Will modify any text fitting this patter {{city}}, to the current location or if it can't get location, it will change it to "in your area"

convertrilocation.js

$(function()
{
  var curCity = "In Your Area";  // You can change this to fit your needs
  var curState = "";  // No default state
  $.getJSON('//freegeoip.net/json/?callback=?', 
  function(location, textStatus, jqXHR) 
  {
    if(textStatus == "success")
    {
      curCity = location.city;
      curState = location.region_name;
    }
      $("body *").contents().each(function() 
      {
        if(this.nodeType == 3)  // 3 are text elements
        {
          // If you want to use another word
    	    this.nodeValue = this.nodeValue.replace(/{{city}}/g, curCity);
          // Uncomment this to also replace the state
          // this.nodeValue = this.nodeValue.replace(/{{state}}/g, curState);
	      }
      });  
   });
})