I have a piece of code in a component that I am building that loads maps in a tab in the admin view. The code works perfectly on the admin side, but when I attempt to add frontend editing, it's crashing, with a call to a member function addScript() on null.

In the code I have attempted adding JFactory::getDocument();, which removes the error, but the script fails to load the maps. I've also thought that perhaps jQuery for some reason isn't loading, so have tried adding the JHtml::_('behavior.framework'); which doesn't change anything.

Google Maps is throwing frontend errors of Uncaught TypeError: Cannot read property 'value' of null.

Here's the sample code that is failing

// (start) Section to initiate google map

if($componentParams['map_provider'] == '1'): 
    $doc->addScript('https://maps.googleapis.com/maps/api/js?key=' . $componentParams['gmapsapi'] );
var mapTabClicked = false;
jQuery(document).ready(function (){
    jQuery('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
        mapTabClicked = true;
        var liText = jQuery(this).text();
        if(liText == 'Map Details')
            var lat = document.getElementById("jform_latitude").value;
            var long = document.getElementById("jform_longitude").value;
            initialize(lat, long);
            var center = map.getCenter();
            google.maps.event.trigger(map, 'resize');



<?php endif; ?>
// (end) Section to initiate google map

Any thoughts on what I might be missing to get this to work in the frontend and the backend?

Here are 2 screenshots:

Backend Frontend

  • To load jQuery, you need to use jquery.framework instead of behavior.framework – Lodder Sep 23 '17 at 10:58
  • And are you getting any errors in your browser console? – Lodder Sep 23 '17 at 10:59
  • Uncaught TypeError: Cannot read property 'value' of null at initialize (googlemap.js:63) It goes on from there, but I can't post the entire error. – Steve Voorhees Sep 23 '17 at 20:11
  • Can you please format the code in your question so it's readable. Thanks – Lodder Sep 23 '17 at 20:13
  • 1
    Glad you found the issue. Would you mind adding it as a proper answer below and marking it as accepted when possible? – Lodder Sep 24 '17 at 2:10

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