toggle function javascript for two displays one button code example

Example 1: how to get a toggle button to do different js functions

var clicked = false;

function toggleBtnClick() {
  var img = document.getElementById('baseImg');
  if (clicked) {
    img.src = 'http://via.placeholder.com/350x150/e9e9e9/000000';
    clicked = false;
  } else {
    img.src = 'http://via.placeholder.com/350x150/3fafed/000000';
    clicked = true;
  }
}

Example 2: javascipt toggle two buttons

function bindButtons(){
  var buttons = $('#buttons button');

  buttons.on('click', function(e){
    var $this = $(this);
    buttons.removeClass('selected').addClass('disabled');
    $this.addClass('selected').removeClass('disabled');

    switch ($this.attr('id')){
        case 'yes': 
            val = true;
            break;
        case 'no': 
            val = false;
            break;
    }
    //do something with val
  })
}