微信小程序中添加客服按钮contact-button功能

 <button open-type='contact' session-from=''>客服-联系我们</button>

<button class="kf_button" open-type="contact" session-from="weapp"> <image class="kf_image" src="../../resources/img/kf.PNG"></image></button>

.kf_button{ background-color: rgba(255, 255, 255, 0); border: 0px; height: 100rpx; right: 0; bottom: 20rpx; position: fixed;}.kf_button::after{ border: 0px;}.kf_image{ z-index: 9999; width: 100rpx; height: 100rpx;}