Expired50% confidenceFactExact time
JavaScript's asynchronous mechanism allows the program to continue executing other code while waiting for a network response, preventing the page from freezing.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
JavaScript Fundamentals: A Complete Guide to Variables, DOM Manipulation, Event Handling, and API Calls
bilibiliFireUG技术社区6/21/2026
Related Claims
UnverifiedJavaScript is a single-threaded language; if network requests are executed synchronously, the entire page will freeze completely while waiting for a server response.83% similarUnverified声明passive: true后，浏览器可提前启动合成线程的滚动处理，无需等待JS执行结果，从而降低滚动延迟70% similarUnverified在移动设备上切换应用时，浏览器可能将页面从active降级为frozen状态，此时JavaScript执行被暂停、定时器停止、WebSocket连接可能断开70% similarUnverifiedJavaScript's single-threaded environment simplifies concurrency safety issues relatively due to its event loop characteristics, but they still require careful handling in multi-Worker or distributed execution scenarios.68% similar
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