ES6 Feature Complete

ES6 Feature Complete

As of r202125, JavaScriptCore supports all of the new features in the ECMAScript 6 (ES6) language specification.

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Release Notes for Safari Technology Preview 8

Release Notes for Safari Technology Preview 8

Safari Technology Preview Release 8 is now available for download for both macOS Sierra beta 2 and OS X El Capitan.

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Improving Color on the Web

Improving Color on the Web

The past few years have seen a dramatic improvement in display technology.

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Improved Font Loading

Improved Font Loading

Web fonts are becoming increasingly popular all over the web.

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Release Notes for Safari Technology Preview 7

Release Notes for Safari Technology Preview 7

Safari Technology Preview Release 7 is now available for download.

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Introducing JSC’s New Sampling Profiler

Introducing JSC’s New Sampling Profiler

JavaScriptCore has a new sampling profiler that powers Web Inspector’s JavaScript & Events timeline.

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Next Steps for Legacy Plug-ins

Next Steps for Legacy Plug-ins

On websites that offer both Flash and HTML5 implementations of content, Safari users will now always experience the modern HTML5 implementation, delivering improved performance and battery life.

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Release Notes for Safari Technology Preview 6

Release Notes for Safari Technology Preview 6

Safari Technology Preview Release 6 is now available for download.

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Memory Debugging with Web Inspector

Memory Debugging with Web Inspector

Web Inspector now includes two new timelines for debugging a webpage’s memory usage.

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JavaScriptCore CSI:
A Crash Site Investigation Story

JavaScriptCore CSI:
A Crash Site Investigation Story

When debugging JavaScript bugs, web developers have Web Inspector which provides a debugger and many introspective tools to examine their code with.

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Release Notes for Safari Technology Preview 5

Release Notes for Safari Technology Preview 5

Safari Technology Preview Release 5 is now available for download.

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ECMAScript 6 Proper Tail Calls in WebKit

ECMAScript 6 Proper Tail Calls in WebKit

Proper Tail Calls (PTC) is a new feature in the ECMAScript 6 language.

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