D3.js 添加zoom缩放功能后dblclick双击也会放大的问题
svg.call(zoom).on("dblclick.zoom", null);
https://*.com/questions/25007466/d3-prevent-double-click-zoom/25024855#25024855
svg.call(zoom).on("dblclick.zoom", null);
https://*.com/questions/25007466/d3-prevent-double-click-zoom/25024855#25024855