Jquery form submission not being triggered

I’m new to JavaScript. I have been trying to design some code which geocodes a location when a search button is hit and the submits the form if successful. To make it to slightly more complicated, if an option from the autosuggest is selected, it also geocodes it even before the search button is hit.

This all seems to work, except that the form is never submitted and I can’t figure out why.

Link: http://jsfiddle.net/sR4GR/42/

$(function () {
  var input = $("#loc"),
      lat   = $("#lat"),
      lng   = $("#lng"),
      lastQuery  = null,
      lastResult = null, // new!
      autocomplete;
  
  function processLocation(query, callback) { // accept a callback argument
    var query = $.trim(input.val()),
        geocoder;
  
    // if query is empty or the same as last time...
    if( !query || query == lastQuery ) {
      callback(lastResult); // send the same result as before
      return; // and stop here
    }
  
    lastQuery = query; // store for next time
  
    geocoder = new google.maps.Geocoder();
    geocoder.geocode({ address: query }, function(results, status) {
      if( status === google.maps.GeocoderStatus.OK ) {
        lat.val(results[0].geometry.location.lat());
        lng.val(results[0].geometry.location.lng());
        lastResult = true; // success!
      } else {
        alert("Sorry - We couldn't find this location. Please try an alternative");
        lastResult = false; // failure!
      }
      callback(lastResult); // send the result back
    });
  }
  
  autocomplete = new google.maps.places.Autocomplete(input[0], {
    types: ["geocode"],
    componentRestrictions: {
      country: "uk"
    }
  });
  
  google.maps.event.addListener(autocomplete, 'place_changed', processLocation);
  
  $('#searchform').on('submit', function (event) {
    var form = this;
    
    event.preventDefault(); // stop the submission
    
    processLocation(function (success) {
      if( success ) { // if the geocoding succeeded, submit the form
        form.submit()
      }
    });
    
  });
});

Answer

You’re calling:

processLocation(function (success) {

But your processLocation has the callback on the second parameter:

function processLocation(query, callback)

Try removing the query parameter from processLocation:

function processLocation(callback)

OR call it with a blank argument:

processLocation(null, function (success)

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Answer