wxmini/dist/button/index.wxml

<wxs src="../wxs/utils.wxs" module="utils" />

<button
  id="{{ id }}"
  class="custom-class {{ utils.bem('button', [type, size, { block, round, plain, square, loading, disabled, unclickable: disabled || loading }]) }}"
  open-type="{{ openType }}"
  hover-class="van-button--active hover-class"
  lang="{{ lang }}"
  business-id="{{ businessId }}"
  session-from="{{ sessionFrom }}"
  send-message-title="{{ sendMessageTitle }}"
  send-message-path="{{ sendMessagePath }}"
  send-message-img="{{ sendMessageImg }}"
  show-message-card="{{ showMessageCard }}"
  app-parameter="{{ appParameter }}"
  aria-label="{{ ariaLabel }}"
  bindtap="onClick"
  bindgetuserinfo="bindGetUserInfo"
  bindcontact="bindContact"
  bindgetphonenumber="bindGetPhoneNumber"
  binderror="bindError"
  bindlaunchapp="bindLaunchApp"
  bindopensetting="bindOpenSetting"
>
  <block wx:if="{{ loading }}">
    <van-loading
      custom-class="loading-class"
      size="{{ loadingSize }}"
      color="{{ type === 'default' ? '#c9c9c9' : '' }}"
    />
    <view
      wx:if="{{ loadingText }}"
      class="van-button__loading-text"
    >
      {{ loadingText }}
    </view>
  </block>
  <slot wx:else />
</button>