D3.js 4.0.0 发布，更新如下： 颜色，插值器 和 秤 Colors now have opacity (rgba, hsla, etc.). New Cubehelix color space. New sequential color scales, including Viridis and cyclical Rainbow. New point and band scales replace ordinal.rangeBands and ordinal.rangePoints. New basis spline interpolators (e.g., continuous ColorBrewer schemes). 形状 和 布局 Shapes (e.g., lines, areas, arcs) can now render to Canvas. Fixed cardinal and monotone splines. Added parameterized Catmull–Rom and natural splines. New deterministic, extensible velocity Verlet force layout. New circle-packing layout! New extensible treemap layout; improved squarified treemaps; added binary treemaps. New d3.stratify for tabular hierarchical data. New faster, mutable, non-recursive quadtrees. Voronoi diagrams now expose topological information. 选择，转换， 舒缓 和 定时器 Selections and transitions are now immutable, providing a cleaner interface. New selection.raise, selection.lower and selection.dispatch methods. Time is now frozen in the background, avoiding unintended effort. Timers can now be stopped externally. Transitions can now interpolate CSS transforms (in addition to SVG transforms). You can now cancel transitions using selection.interrupt. Easier transition chaining thanks to new d3.active and changed transition.delay. Better performance for homogenous transitions (e.g., shared interpolators across elements). Better state persistence and enforcement for transitions. Fixed elastic and bounce easing. 更多 Better default axis appearance. Better brush interaction. Built-in asynchronous queue for loading files in parallel. New low-level d3.ticks API. 下载地址： d3.zip Source code (zip) Source code (tar.gz) D3.js 4.0.0 发布，可视化 JS 库下载地址
