(With the increasing complexity and diversification of Web services, the improvement of front-end efficiency has been regarded as a key optimization direction at the technical level by many front-line enterprises. In the interview, the degree of understanding of efficiency engineering and the optimization output in practice have also become common standards for measuring the ability of front-end engineers. For any front-end practitioner, the efficiency optimization ability can not only provide assistance for interviews and promotions, but also accumulate the long-term value of the front-end practitioner's career. The column sorts out the knowledge points and cases related to efficiency improvement in the front-end development workflow, builds a systematic front-end efficiency knowledge system for you, establishes correct problem-solving ideas, and provides a basis for you to optimize efficiency.)
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