程序代写代做代考 scheme concurrency algorithm SQL Hive Excel Java flex chain d3js javascript # Changes in D3 5.0
# Changes in D3 5.0 [Released March 22, 2018.](https://github.com/d3/d3/releases/tag/v5.0.0) D3 5.0 introduces only a few non-backwards-compatible changes. D3 now uses [Promises](https://developer.mozilla.org/docs/Web/JavaScript/Guide/Using_promises) instead of asynchronous callbacks to load data. Promises simplify the structure of asynchronous code, especially in modern browsers that support [async and await](https://javascript.info/async-await). (See this [introduction to promises](https://beta.observablehq.com/@mbostock/introduction-to-promises) on [Observable](https://beta.observablehq.com).) For example, to load […]