showLoading

showLoading是一个用于在发起网络请求前显示"加载中..."的方法。在这个例子中，它被用来在调用wx.request方法前显示加载中的提示。在请求成功、失败或完成后，通过调用wx.hideLoading方法来关闭加载提示。这样可以让用户知道请求正在进行中，并在请求结束后提供反馈。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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