     <div class="message">
            <!-- 拖动条 -->
            透明度：<input id="trans" type="range" min="0" max="100" step="1" value="50" onmousemove="change()">
        </div>
    </div>
    <!--位置信息容器-->
    <div id="coordinateDiv" class="coordinateClass">
        <label id="coordinate_location"></label>
    </div>
</body>

</html>