How to stop html button redirecting to another web page automatically

Question

I have an HTML button:

<button>
   <img id = "click-me" src="https:..." alt="Add to List" style="width: 50px"/>
</button>

Which, when clicked, should execute this JQuery code:

$(function () {
    $("#click-me").click(function () {
        document.getElementById('list').style.backgroundColor = "red";      
    });
});

But, instead of doing what I want it to do, clicking the button sends me to another page of my website. How do I stop this? Thanks

EDIT:

here is the full html of the page:

<div class="form">
      <h1>Create A Meeting</h1>

      <%= form_for(@newevent) do |f| %>

          <%= f.text_field :name, :placeholder => "Title" %>
          <!--< f.collection_select :location, Location.all, :id, :locName %> FOR WHEN LOCATIONS ARE A THING-->
          <%= f.text_field :description, :placeholder => "Short Description" %>

          <div>
            <h2>Who's involved?</h2>
            <p>select a colleague to compare their calendar with yours</p>
            <%= f.collection_select :id,
                                    Customer.where(business_id: current_customer.business_id),
                                    :id,
                                    :full_name,
                                    { prompt: 'Select' },
                                    { id: "colleage-select", onChange: "renderColCal(this)" } %>
            <button id="click-me" type="button">
              <img  src="https://cdn4.iconfinder.com/data/icons/basic-ui-elements/700/07_plus-128.png" alt="Add to Event" style="width: 50px"/>
            </button>



            <div class = 'row'>
                <div class = 'col-md-6' id = 'left-calendar-wrapper'>
                  <h3>Your calendar:</h3>
                  <%= render partial: '/calendars/show', locals: {} %>
                </div>

                <div class="col-md-6" id="calendar-wrapper">
                  <h3>Your colleague's calendar:</h3>


                </div>
              <div>
                <p>Meeting Participants:</p>
                <ol id ="list">
                  <li>list</li>

                </ol>
              </div>


            </div>


          </div>



          <div>
            <h2>when do you want it to start?</h2>
            <%= f.datetime_select :starts_at, :placeholder => "when do you want it?"   %>
          </div>



          <div>
            <h2>when do you want it to end?</h2>
            <%= f.datetime_select :ends_at, :placeholder => "when should it end?"  %>
          </div>


          <%= f.submit "Create Meeting", class: "btn-submit" %>
      <% end %>


    </div>
  </div>
</div>

The JQuery remains the same

Answer 1

Add the id="click-me" to the button and not img. And also, please add type="button" for the button.

Either add e.preventDefault() or return false:

$(function () {
    $("#click-me").click(function () {
        document.getElementById('list').style.backgroundColor = "red";
        return false;
    });
});

Or:

$(function () {
    $("#click-me").click(function (e) {
        e.preventDefault();
        document.getElementById('list').style.backgroundColor = "red";
    });
});

Answer 2

Button itself wouldn't do anything. I guess it is in form and when clicked it submits form. So You should prevent that:

$('#click-me').parents('form').on('submit', function(e){
    e.preventDefault();
});

Or just add type="button" to button. If no type is provided button is handled as submit button (type="submit").

<button type="button">
   <img id = "click-me" src="https:..." alt="Add to List" style="width: 50px"/>
</button>

Paste more of Your HTML/JS, because looking at this code button shouldn't do anything