Web performance optimization (WPO)The document outlines various strategies for optimizing website performance, emphasizing the significance of speed for user satisfaction and competitive advantage. Key suggestions include front-end optimizations, image compression, efficient CSS usage, and reducing server load through methods like combined scripts and content delivery networks. It also touches on the importance of performance test
in 演算子と obj.hasOwnProperty() はどちらが早い！？ - hogehoge @teramako
