


What are the actual HTML elements in the HTML, CSS, and JS input areas in the web code editor?
Apr 05, 2025 am 10:06 AMDiscovering the HTML structure of online code editor
Many websites integrate code editors, allowing users to write and edit HTML, CSS, and JavaScript code. This article will answer a question about the composition of HTML elements in the code editor. The user observed that a web page contains three code input areas (HTML, CSS, JS), but it was not found directly in the source code.<div> Or other explicit container elements wrap these areas.<p> The user checked the rendered web page source code and found no expected<code><div> and <code><textarea></textarea>
元素。 提供的截圖也證實(shí)了這一點(diǎn)。 實(shí)際上,很多在線代碼編輯器巧妙地利用了隱藏的HTML元素來(lái)實(shí)現(xiàn)代碼輸入?yún)^(qū)域。 用戶看到的,很可能是代碼編輯器的輸出結(jié)果,而非其完整的DOM結(jié)構(gòu)。
如果直接檢查網(wǎng)頁(yè)的DOM結(jié)構(gòu)(而非僅僅查看渲染結(jié)果),就能發(fā)現(xiàn)代碼輸入?yún)^(qū)域是由一個(gè)或多個(gè)隱藏的元素(例如,textarea
元素或自定義的編輯器組件)構(gòu)建的。 刪除這些元素后,用戶將無(wú)法再在相應(yīng)區(qū)域輸入代碼,這便是關(guān)鍵的證明。
網(wǎng)頁(yè)渲染的內(nèi)容與實(shí)際用于代碼編輯的DOM結(jié)構(gòu)是分離的。 用戶看到的只是編輯器呈現(xiàn)的代碼顯示區(qū)域,而非編輯區(qū)域本身的HTML元素。 因此,用于輸入HTML、CSS和JS代碼的元素并非直接可見(jiàn),而是隱藏在頁(yè)面DOM結(jié)構(gòu)中的元素,通常是功能強(qiáng)大的、用于代碼編輯的自定義組件或隱藏的<textarea></textarea>
元素。
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