Load gravity forms JS in footer

movegfjstofooter.php

// GF method: http://www.gravityhelp.com/documentation/gravity-forms/extending-gravity-forms/hooks/filters/gform_init_scripts_footer/
add_filter( 'gform_init_scripts_footer', '__return_true' );

// solution to move remaining JS from https://bjornjohansen.no/load-gravity-forms-js-in-footer
add_filter( 'gform_cdata_open', 'wrap_gform_cdata_open' );
function wrap_gform_cdata_open( $content = '' ) {
  $content = 'document.addEventListener( "DOMContentLoaded", function() { ';
  return $content;
}
add_filter( 'gform_cdata_close', 'wrap_gform_cdata_close' );
function wrap_gform_cdata_close( $content = '' ) {
  $content = ' }, false );';
  return $content;
}

I added those snippets (one at a time; as they are doing same thing) but on both cases when i defer my javascript on my server, the form doesn't load with an error in console says that jquery is not a function.
Can you please help?

@shireefkhatab
My guess is that something in your installation is preventing jQuery from being loaded at all.
In any case, the snipping needs to be placed (as a whole) in your theme functions.php or in a custom plugin. It would also work as a must-use plugin.

Thanks @JoryHogeveen for your contributions.

Hey guys, this not works anymore with GF 2.5, also from GF 2.5 scripts are by default in footer.

This breaks for me when using conditional logic

Uncaught ReferenceError: gf_global is not defined

Error is thrown from this line:

gf_global["number_formats"][5] = {"1":{"price":false,"value":false},"2":{"price":false,"value":false},"3":{"price":false,"value":false},"4":{"price":false,"value":false},"13":{"price":false,"value":false},"12":{"price":false,"value":false},"6":{"price":false,"value":false},"7":{"price":false,"value":false},"8":{"price":false,"value":false},"10":{"price":false,"value":false}};if(window['jQuery']){if(!window['gf_form_conditional_logic'])window['gf_form_conditional_logic'] = new Array();window['gf_form_conditional_logic'][5] = { logic: { 10: {"field":{"actionType":"show","logicType":"all","rules":[{"fieldId":"1","operator":"is","value":"River Club Apartments"}]},

From GF 2.5 this breaks the forms (that have coniditional logic). See https://community.gravityforms.com/t/gf-2-5-7-5-is-broken/10323/8

I'd advice not using this any more and removing it anywhere where it is added.

Correct, this code is redundant since GF 2.5+