Web development

想要換掉一張無法由網站後台操作更換的圖片?

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Fonts on 3rd party domains may take longer to load due to DNS and connection steps that are not necessary when fonts are hosted on the same domain.

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Fix all of the following: Element is in tab order and does not have accessible text Fix any of the following: Element does not have text that is visible to screen readers aria-label attribute does not exist or is empty aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty Element has no title attribut

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Fix any of the following: Form element does not have an implicit (wrapped) <label> Form element does not have an explicit <label> aria-label attribute does not exist or is empty aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty Element has no title attribute Element has no placeholder attribute Element's default semantics were not overridden with role="none" or role="presentation"

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By default, references to external JavaScript files will block the page from rendering while they are fetched and executed. Often, these files can be loaded in a different manner, freeing up the page to visually render sooner.

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When files block the main thread, users are unable to interact with the page content. Typically, parsing and executing large JavaScript files, as well as running long JavaScript tasks can block the main thread and should be avoided. These files had high thread blocking times:

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延長快取生命週期可以加快使用者再次造訪網頁的速度。

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