Gives an error what to do?

Question

css

$('.mobile-tab').hide();

$('#burg').on('click', function() {
$('.mobile-tab').slideToggle();
})

throws this
Uncaught TypeError: $(...).slideToggle is not a function
at HTMLDivElement. (script.js:4)
at HTMLDivElement.dispatch (jquery-3.2.1.slim.min.js:3)
at HTMLDivElement.q.handle (jquery-3.2.1.slim.min.js:3)

Answer 1

$('.mobile-tab').hide();

$('#burg').on('click', function() {
$('.mobile-tab').show();
})