Do custom conversion tracking for canvas in OptinMonster.

gistfile1.js

jQuery(document).ready(function($){
	$(document).on('click', '.optin-monster-overlay .livechat_button a', function(e){
		// Prepare variables.
		var $this = $(this),
			optin = $this.closest('.optin-monster-overlay').attr('id').replace('om-', '').replace('-', '_');
		if ( ! window[optin] ) {
			return;
		}

		// Send ajax request to track the optin.
		var data = {
			optin_monster_ajax_action: 'track_optinmonster_custom',
			id: window[optin].getProp('id')
		};
		$.post(window[optin].getProp('ajax'), data, function(res){}, 'json');
	});
});