Servo浏览器发布0.4.0版本，新增媒体查询和SharedWorker等Web特性

Servo浏览器引擎发布0.4.0版本，汇集了558次代码提交带来的多项更新1。此次版本新增了attr()、媒体查询、SharedWorker、console.dir()等Web平台特性，显著提升了对真实网站的兼容性1。其中lichess.org等知名网站的支持度获得了明显改善1。

在安全与性能方面，Servo将SpiderMonkey JavaScript引擎从140.10.1升级至140.12.0，修复了多个CVE和RUSTSEC漏洞1。内存效率也得到优化，BoxFragment对象的内存占用减少了17%，从288字节降至240字节；2D画布功耗降低23%1。开发团队还修复了16个由模糊测试发现的崩溃缺陷1。

社区支持方面，Servo在6月获得7681美元月度捐款，环比增长0.2%，另有35个GitHub用户通过thanks.dev赞助了该项目1。

Servo has released version 0.4.0, incorporating 558 commits from June that deliver significant improvements to web compatibility and platform capabilities 1. The update introduces several new Web platform features, including the attr() function, media queries, SharedWorker API, and console.dir() method 1. These additions represent a substantial step forward in bringing real-world website support to the browser engine.

Beyond new features, the release prioritizes security and performance optimization 1. The SpiderMonkey JavaScript engine has been upgraded from version 140.10.1 to 140.12.0, addressing multiple CVE and RUSTSEC vulnerabilities 1. Memory efficiency has improved notably, with BoxFragment memory consumption reduced by 17 percent, decreasing from 288 bytes to 240 bytes 1. Additionally, 2D canvas performance has seen a 23 percent reduction in power consumption 1. The development team also resolved 16 crash bugs identified through fuzzing testing 1.

Compatibility enhancements are particularly evident on established web properties; sites such as lichess.org now function considerably better within Servo 1. The project's community support remains steady, with monthly donations reaching $7,681, representing a 0.2 percent increase from the previous month, and 35 GitHub users providing sponsorship through thanks.dev 1.