Dmitri Pavlutin • 9/3/2019

How To Accelerate the JavaScript Spread Operator

This technical article analyzes the performance of JavaScript's spread operator within array literals. It details a benchmark comparing `[...array, item]` versus `[item, ...array]`, uncovering that Chrome's V8 engine executes the former twice as fast due to a 'fast-path' optimization for known iterables like arrays. The post provides code examples and browser-specific test results, offering a practical tip for performance-conscious JavaScript developers.

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#JavaScript #performance #optimization