huiting/miniprogram/components/myButton/myButton.wxml

<!--components/myButton/myButton.wxml-->
<button
  class="{{'my-button ' + (type === 'primary' ? 'primary-background-color white-text-color ' : 'secondary-background-color primary-border-color ') + (size === 'large' && 'large-button ')}}"
  bind="handleTap" form-type="submit">
  <slot></slot>
</button>