Phone call tracking without jQuery

script.js

<script type="text/javascript">

	 document.addEventListener( 'wpcf7mailsent', function( event ) {
	            if (typeof gtag !== 'undefined') {
	                  gtag('event', 'Submit', {
	                    'event_category': 'Contact Form',
	                    'event_label': 'Main Contact Form',
	                    'event_callback': function() {
	                        console.log("contact form tracking sent successfully");
	                    }
	                     
	                 });
	            } // end if variable defined
	}, false );

	 document.addEventListener('click', function (event) {

		// If the clicked element doesn't have the right selector, bail
		if (event.target.matches(".phone-num")) {
			 if (typeof gtag !== 'undefined') {
                  gtag('event', 'Click', {
                    'event_category': 'Contact',
                    'event_label': 'Phone',
                    'event_callback': function() {
                        console.log("phone call information sent successfully");
                    }
                     
                 });
            } // end if variable defined
		} // end if phone number was clicked

		if (event.target.matches(".fax-num")) {
			 if (typeof gtag !== 'undefined') {
                  gtag('event', 'Click', {
                    'event_category': 'Contact',
                    'event_label': 'Fax',
                    'event_callback': function() {
                        console.log("fax clickinformation sent successfully");
                    }
                     
                 });
            } // end if variable defined
		} // end if fax number was clicked



	}, false);


</script>