Progress

进度条。Progress UI 提供与WeLink规范一致的视图。 进度条状态包括：上传前、上传中、上传成功、上传失败。

    <div class="weui-progress">
        <div class="weui-progress__bar">
            <div class="weui-progress__inner-bar js_progress" style="width: 0%;"></div>
        </div>
        <a href="javascript:;" class="weui-progress__opr">
            <i class="weui-icon-cancel"></i>
        </a>
    </div>
    <br>
    <div class="weui-progress">
        <div class="weui-progress__bar">
            <div class="weui-progress__inner-bar js_progress" style="width: 50%;"></div>
        </div>
        <a href="javascript:;" class="weui-progress__opr">
            <i class="weui-icon-cancel"></i>
        </a>
    </div>
    <br>
    <div class="weui-progress">
        <div class="weui-progress__bar">
            <div class="weui-progress__inner-bar js_progress" style="width: 80%;"></div>
        </div>
        <a href="javascript:;" class="weui-progress__opr">
            <i class="weui-icon-cancel"></i>
        </a>
    </div>
    <div class="weui-btn-area">
        <a href="javascript:;" class="weui-btn weui-btn_primary" id="btnUpload">上传</a>
    </div>