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Help parsing string (City, State Zip) with JavaScript

var address = "San Francisco, CA 94129";

 

function parseAddress(address) {

    // Make sure the address is a string.

    if (typeof address !== "string") throw "Address is not a string.";

 

    // Trim the address.

    address = address.trim();

 

    // Make an object to contain the data.

    var returned = {};

 

    // Find the comma.

    var comma = address.indexOf(',');

 

    // Pull out the city.

    returned.city = address.slice(0, comma);

 

    // Get everything after the city.

    var after = address.substring(comma + 2); // The string after the comma, +2 so that we skip the comma and the space.

 

    // Find the space.

    var space = after.lastIndexOf(' ');

 

    // Pull out the state.

    returned.state = after.slice(0, space);

 

    // Pull out the zip code.

    returned.zip = after.substring(space + 1);

 

    // Return the data.

    return returned;

}

 

address = parseAddress(address);

       

function parseAddress(a) {if(typeof a!=="string") throw "Address is not a string.";a=a.trim();var r={},c=a.indexOf(',');r.city=a.slice(0,c);var f=a.substring(c+2),s=f.lastIndexOf(' ');r.state=f.slice(0,s);r.zip=f.substring(s+1);return r;}

       

var parts = "City, State ZIP".split(/s+/); // split on whitespace

var city = parts[0].slice(0, parts[0].length - 1); // remove trailing comma

var state = parts[1];

var zip = parts[2];

       

var parts = "san fran bay, new mex state 666666".split(/s+|,/),

    partition = parts.indexOf(""),

    city = parts.slice(0, partition).join(" "),

    state = parts.slice(partition + 1, -1).join(" "),

    zip = parts.pop();

       

var city, statezip, state, zip, parts;

[city, statezip] = "Spaced City, New Mexico ZIP".split(/,s*/);

parts = statezip.split(/s+/);

zip = parts.pop();

state = parts.join(" ");

       

var str = "New York, NY 20101";

    var cityAndRest = str.split(',');

    var city = cityAndRest[0];

    var stateAndZip = cityAndRest[1].trim().split(' ');

    var state = stateAndZip[0];

    var zip = stateAndZip[1];

       

function IsNumeric(n) {

  return !isNaN(parseFloat(n)) && isFinite(n);

}

 

var addr = 'New York City, New York 10101';

//var addr = 'San Bernadino, CA 11111';

function getCityStateZip(addr){

  var city; var state;var zip;

  city = ''; state = ''; zip = '';

  var addrLen = addr.length;

  if ( IsNumeric( addr.substring(addrLen - 1) ) ) {

    //contains a zipcode - just a sanity check

    //get last 10 characters for testing easily

    var lastTen = addr.substring( addrLen - 10 );

    if ( lastTen.indexOf('-') > 0 && ( lastTen.indexOf(' ') == -1 ) ) {

      //found a hyphen and no space (matches our complex rule for zipcodes)

      zip = lastTen;

    } else {

      zip = addr.substring( addrLen - 5 ); //assume a basic 5 zip code

    }

  }

  var zipLen = zip.length;

  addrLen = addrLen - zipLen - 1;

  addr = addr.substring(0, addrLen ); //remove the chars we just moved into zip

 

  var lastComma = addr.lastIndexOf(',');

  if ( lastComma == -1 ) {

    //you have a problem, how do you want to handle it?

  }

  city = addr.substring(0,lastComma); //skip the comma itself, yes?

  state = addr.substring(lastComma + 2);

  return { 'city':city,'state': state,'zip': zip};

}

 

getCityStateZip(addr)