Select all option in materialize multi select
问题 Bootstrap multisleect has option for select all (for example here). Is this possible in materialize multi select? 回答1: You can add them like this: https://codepen.io/anon/pen/XgEbRL?editors=1010 HTML: <div class="input-field col s12"> <select multiple> <option value="" disabled selected>Choose your option</option> <option value="1">Option 1</option> <option value="2">Option 2</option> <option value="3">Option 3</option> </select> <label>Materialize Multiple Select</label> </div> <a class="btn