然後，用curl檢查前端、後端：\n<\/li>\n<\/ul>\n\nuser@docker:~$ curl http:\/\/localhost:3000\n\n\n\n \n \n Frontend<\/title>\n<\/head>\n<body>
<h1><a href="http://miracleart.cn/">国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂</a></h1>\n <h1>Frontend is working!<\/h1>\n<\/body>\n\nuser@docker:~$ curl http:\/\/localhost:5000\/api\n{\"message\":\"Hello from the backend!\"}\n\nuser@docker:~$ curl http:\/\/localhost:5000\nBackend is working!\n<\/html>\n<\/pre>\n\n\n\n<ul>\n<li>最後，停止容器：\n<\/li>\n<\/ul>\n\n<pre>user@docker:~$ docker ps -a\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\n3e51751b546c node-frontend \"docker-entrypoint.s…\" About a minute ago Up About a minute 0.0.0.0:3000->3000\/tcp, :::3000->3000\/tcp frontend\nd8d28325ce10 postgres:15 \"docker-entrypoint.s…\" About a minute ago Up About a minute 0.0.0.0:5432->5432\/tcp, :::5432->5432\/tcp db\n04c1d04a5668 node-backend \"sh -c 'pip install …\" About a minute ago Up About a minute 0.0.0.0:5000->5000\/tcp, :::5000->5000\/tcp backend\nuser@docker:~$ docker compose down\n[+] Running 4\/4\n ? Container frontend Removed 1.0s\n ? Container db Removed 0.5s\n ? Container backend Removed 10.5s\n ? Network node_default Removed 0.2s\nuser@docker:~$ docker ps -a\nCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES\n<\/pre>\n\n\n\n<h2>\n \n \n 結(jié)論\n<\/h2>\n\n<p>這篇文章展示如何使用範例前端 (express.js)、後端 (flask)、資料庫 (postgresql) 應用程式建立 Docker compose 檔案。如果您以前沒有看過，請查看下面的選單，以了解其他 Docker 內(nèi)容。 <\/p>\n\n<p><strong>專注於 AWS、Kubernetes、Docker、Linux、DevOps、Ansible、機器學習、生成式 AI、SAAS 的提示、教學和實作實驗室。 <\/strong><\/p>\n\n<ul>\n<li>https:\/\/github.com\/omerbsezer\/<\/li>\n<li>https:\/\/www.linkedin.com\/in\/omerberatsezer\/<\/li>\n<\/ul>\n\n\n \n\n \n \n\n \n "} </script>
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<span>Docker 實作：學習 Docker 使用 Nodejs、Flask、PostgreSQL 編寫文件</span>
</div>
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<h1 class="Articlelist_txts_title">Docker 實作：學習 Docker 使用 Nodejs、Flask、PostgreSQL 編寫文件</h1>
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<img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea8199266e8412.png" src="/static/imghw/default1.png" alt="Linda Hamilton">
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<a href="http://miracleart.cn/zh-tw/member/1468489.html" class="author_name">Linda Hamilton</a>
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<span id="377j5v51b" class="Articlelist_txts_time">Jan 14, 2025 pm 06:28 PM</span>
</div>
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<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173685049711656.jpg" class="lazy" alt="Docker Hands-on: Learn Docker Compose File with Nodejs, Flask, PostgreSQL"></p>
<p>在上一篇文章中，我們提到了 Docker 教學。 </p>
<ul>
<li>
https://dev.to/omerberatsezer/docker-tutorial-dockerfile-commands-container-images-volume-network-docker-compose-2p9h </li>
</ul>
<p>這次，我們開始運行範例專案：專注於使用 Nodejs、Flask、PostgreSQL 映像的 Docker Compose 檔案來實現(xiàn)不同的層：</p>
<ul>
<li>前端（nodejs 和expressjs），</li>
<li>後端（燒瓶），</li>
<li>資料庫（postgresql）。 </li>
</ul>
<p>它顯示：</p>
<ul>
<li>如何運作多個容器</li>
<li>如何使用depends_on順序運行容器
</li>
<li>如何在同一網(wǎng)路中運作容器</li>
<li>如何在撰寫文件中建立卷宗</li>
<li>如何實現(xiàn)連接埠轉(zhuǎn)送</li>
</ul>
<p><strong>GitHub 代碼倉庫：</strong> https://github.com/omerbsezer/Fast-Docker/tree/main/hands-on-sample-projects/full-stack-app</p>
<p><strong>專案結(jié)構(gòu)：</strong><br>
</p>
<pre class="brush:php;toolbar:false">project-root/
├── docker-compose.yaml
├── frontend/
│ ├── package.json
│ ├── index.js
│ ├── index.html
│ ├── Dockerfile
├── backend/
│ ├── app.py
│ ├── requirements.txt
│ ├── Dockerfile
</pre>
<ul>
<li>建立前端目錄，建立Dockerfile：
</li>
</ul>
<pre class="brush:php;toolbar:false">FROM node:18
WORKDIR /home/app
COPY . .
EXPOSE 3000
RUN npm install
CMD ["npm", "start"]
</pre>
<ul>
<li>建立index.html：
</li>
</ul>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Frontend</title>
</head>
<body>
<h1>Frontend is working!</h1>
</body>
</html>
</pre>
<ul>
<li>創(chuàng)建index.js（express js）：
</li>
</ul>
<pre class="brush:php;toolbar:false">const express = require("express");
const app = express();
const port=3000;
app.get("/", (req, res) => {
res.sendFile(__dirname + "/index.html");
})
app.listen(port, () => {
console.log(`running at port ${port}`);
});
</pre>
<ul>
<li>建立package.json：
</li>
</ul>
<pre class="brush:php;toolbar:false">{
"name": "nodejsapp",
"version": "1.0.0",
"description": "nodejsapp description",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index.js"
},
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.17.3"
}
}
</pre>
<ul>
<li>然後，建立後端目錄，並建立Dockerfile：
</li>
</ul>
<pre class="brush:php;toolbar:false">FROM python:3.11
WORKDIR /usr/src/app
COPY . .
RUN pip install -r requirements.txt
EXPOSE 5000
CMD ["python", "app.py"]
</pre>
<ul>
<li>使用 Flask 建立後端應用程式：
</li>
</ul>
<pre class="brush:php;toolbar:false">from flask import Flask, jsonify
app = Flask(__name__)
@app.route('/')
def home():
return "Backend is working!"
@app.route('/api', methods=['GET'])
def api():
return jsonify({"message": "Hello from the backend!"})
if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000)
</pre>
<ul>
<li>建立requirements.txt：
</li>
</ul>
<pre class="brush:php;toolbar:false">flask
</pre>
<ul>
<li>最後在後端和前端目錄之上建立 docker-compose.yaml：
</li>
</ul>
<pre class="brush:php;toolbar:false">services:
frontend:
build:
context: ./frontend
container_name: frontend
ports:
- "3000:3000"
volumes:
- ./frontend:/usr/src/app
depends_on:
- backend
backend:
build:
context: ./backend
container_name: backend
ports:
- "5000:5000"
volumes:
- ./backend:/usr/src/app
command: sh -c "pip install -r requirements.txt && python app.py"
db:
image: postgres:15
container_name: db
environment:
POSTGRES_USER: user
POSTGRES_PASSWORD: password
POSTGRES_DB: mydatabase
volumes:
- db_data:/var/lib/postgresql/data
ports:
- "5432:5432"
volumes:
db_data:
</pre>
<ul>
<li>然後，在 docker-compose.yaml 上執(zhí)行指令：
</li>
</ul>
<pre class="brush:php;toolbar:false">user@docker:~$ docker compose up -d
[+] Running 4/4
? Network node_default Created 0.1s
? Container db Started 0.7s
? Container backend Started 0.7s
? Container frontend Started
</pre>
<ul>
<li>然後，用curl檢查前端、後端：
</li>
</ul>
<pre class="brush:php;toolbar:false">user@docker:~$ curl http://localhost:3000
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Frontend</title>
</head>
<body>
<h1>Frontend is working!</h1>
</body>
user@docker:~$ curl http://localhost:5000/api
{"message":"Hello from the backend!"}
user@docker:~$ curl http://localhost:5000
Backend is working!
</html>
</pre>
<ul>
<li>最後，停止容器：
</li>
</ul>
<pre class="brush:php;toolbar:false">user@docker:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3e51751b546c node-frontend "docker-entrypoint.s…" About a minute ago Up About a minute 0.0.0.0:3000->3000/tcp, :::3000->3000/tcp frontend
d8d28325ce10 postgres:15 "docker-entrypoint.s…" About a minute ago Up About a minute 0.0.0.0:5432->5432/tcp, :::5432->5432/tcp db
04c1d04a5668 node-backend "sh -c 'pip install …" About a minute ago Up About a minute 0.0.0.0:5000->5000/tcp, :::5000->5000/tcp backend
user@docker:~$ docker compose down
[+] Running 4/4
? Container frontend Removed 1.0s
? Container db Removed 0.5s
? Container backend Removed 10.5s
? Network node_default Removed 0.2s
user@docker:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
</pre>
<h2>
結(jié)論
</h2>
<p>這篇文章展示如何使用範例前端 (express.js)、後端 (flask)、資料庫 (postgresql) 應用程式建立 Docker compose 檔案。如果您以前沒有看過，請查看下面的選單，以了解其他 Docker 內(nèi)容。 </p>
<p><strong>專注於 AWS、Kubernetes、Docker、Linux、DevOps、Ansible、機器學習、生成式 AI、SAAS 的提示、教學和實作實驗室。 </strong></p>
<ul>
<li>https://github.com/omerbsezer/</li>
<li>https://www.linkedin.com/in/omerberatsezer/</li>
</ul>
<p>以上是Docker 實作：學習 Docker 使用 Nodejs、Flask、PostgreSQL 編寫文件的詳細內(nèi)容。更多資訊請關注PHP中文網(wǎng)其他相關文章！</p>
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<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 週前</span>
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</div>
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</div>
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<div id="377j5v51b" class="phpmain1_4R_readrank">
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<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hottools2.png" alt="" />
<h2>熱AI工具</h2>
</div>
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<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173410641626608.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undress AI Tool" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_title">
<h3>Undress AI Tool</h3>
</a>
<p>免費脫衣圖片</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411540686492.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undresser.AI Undress" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_title">
<h3>Undresser.AI Undress</h3>
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<p>人工智慧驅(qū)動的應用程序，用於創(chuàng)建逼真的裸體照片</p>
</div>
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<a href="http://miracleart.cn/zh-tw/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
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</a>
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<a href="http://miracleart.cn/zh-tw/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_title">
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</a>
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</div>
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<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411529149311.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Clothoff.io" />
</a>
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<a href="http://miracleart.cn/zh-tw/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_title">
<h3>Clothoff.io</h3>
</a>
<p>AI脫衣器</p>
</div>
</div>
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<a href="http://miracleart.cn/zh-tw/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173414504068133.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Video Face Swap" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_title">
<h3>Video Face Swap</h3>
</a>
<p>使用我們完全免費的人工智慧換臉工具，輕鬆在任何影片中換臉！</p>
</div>
</div>
</div>
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<a href="http://miracleart.cn/zh-tw/ai">顯示更多</a>
</div>
</div>
</div>
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<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
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<h2>熱門文章</h2>
</div>
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<span>1 個月前</span>
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<a href="http://miracleart.cn/zh-tw/faq/1796821436.html" title="沙丘：覺醒 - 高級行星學家Quest演練" class="phpgenera_Details_mainR4_bottom_title">沙丘：覺醒 - 高級行星學家Quest演練</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 週前</span>
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<a href="http://miracleart.cn/zh-tw/faq/1796821868.html" title="Palia：Rasquellywag的Riches Quest演練" class="phpgenera_Details_mainR4_bottom_title">Palia：Rasquellywag的Riches Quest演練</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 週前</span>
<span>By DDD</span>
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</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/zh-tw/article.html">顯示更多</a>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hottools2.png" alt="" />
<h2>熱工具</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_bottom">
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/92" title="記事本++7.3.1" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab96f0f39f7357.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="記事本++7.3.1" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/92" title="記事本++7.3.1" class="phpmain_tab2_mids_title">
<h3>記事本++7.3.1</h3>
</a>
<p>好用且免費的程式碼編輯器</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/93" title="SublimeText3漢化版" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97a3baad9677.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3漢化版" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/93" title="SublimeText3漢化版" class="phpmain_tab2_mids_title">
<h3>SublimeText3漢化版</h3>
</a>
<p>中文版，非常好用</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/121" title="禪工作室 13.0.1" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97ecd1ab2670.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="禪工作室 13.0.1" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/121" title="禪工作室 13.0.1" class="phpmain_tab2_mids_title">
<h3>禪工作室 13.0.1</h3>
</a>
<p>強大的PHP整合開發(fā)環(huán)境</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d0e0fc74683535.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="Dreamweaver CS6" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_title">
<h3>Dreamweaver CS6</h3>
</a>
<p>視覺化網(wǎng)頁開發(fā)工具</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/500" title="SublimeText3 Mac版" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d34035e2757995.png?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3 Mac版" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/zh-tw/toolset/development-tools/500" title="SublimeText3 Mac版" class="phpmain_tab2_mids_title">
<h3>SublimeText3 Mac版</h3>
</a>
<p>神級程式碼編輯軟體(SublimeText3)</p>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/zh-tw/ai">顯示更多</a>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hotarticle2.png" alt="" />
<h2>熱門話題</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottom">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/zh-tw/faq/gmailyxdlrkzn" title="gmail信箱登陸入口在哪裡" class="phpgenera_Details_mainR4_bottom_title">gmail信箱登陸入口在哪裡</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>8639</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>17</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/zh-tw/faq/java-tutorial" title="Java教學" class="phpgenera_Details_mainR4_bottom_title">Java教學</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1786</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>16</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/zh-tw/faq/cakephp-tutor" title="CakePHP 教程" class="phpgenera_Details_mainR4_bottom_title">CakePHP 教程</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1729</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>56</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/zh-tw/faq/laravel-tutori" title="Laravel 教程" class="phpgenera_Details_mainR4_bottom_title">Laravel 教程</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1581</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>29</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/zh-tw/faq/php-tutorial" title="PHP教程" class="phpgenera_Details_mainR4_bottom_title">PHP教程</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1448</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>31</span>
</div>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/zh-tw/faq/zt">顯示更多</a>
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<p class="Articlelist_txts_p">JavascriptconcommentsenceenceEncorenceEnterential gransimenting，reading and guidingCodeeXecution.1）單inecommentsareusedforquickexplanations.2）多l(xiāng)inecommentsexplaincomplexlogicorprovideDocumentation.3）</p>
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<a href="http://miracleart.cn/zh-tw/faq/1796827639.html" title="如何在JS中與日期和時間合作？" class="phphistorical_Version2_mids_title">如何在JS中與日期和時間合作？</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 01, 2025 am 01:27 AM</span>
<p class="Articlelist_txts_p">JavaScript中的日期和時間處理需注意以下幾點：1.創(chuàng)建Date對像有多種方式，推薦使用ISO格式字符串以保證兼容性；2.獲取和設置時間信息可用get和set方法，注意月份從0開始；3.手動格式化日期需拼接字符串，也可使用第三方庫；4.處理時區(qū)問題建議使用支持時區(qū)的庫，如Luxon。掌握這些要點能有效避免常見錯誤。</p>
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<p class="Articlelist_txts_p">JavaScriptIspreferredforredforwebdevelverment，而Javaisbetterforlarge-ScalebackendsystystemsandSandAndRoidApps.1）JavascriptexcelcelsincreatingInteractiveWebexperienceswebexperienceswithitswithitsdynamicnnamicnnamicnnamicnnamicnemicnemicnemicnemicnemicnemicnemicnemicnddommanipulation.2）</p>
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<span id="377j5v51b" class="Articlelist_txts_time">Jul 02, 2025 am 01:19 AM</span>
<p class="Articlelist_txts_p">事件捕獲和冒泡是DOM中事件傳播的兩個階段，捕獲是從頂層向下到目標元素，冒泡是從目標元素向上傳播到頂層。 1.事件捕獲通過addEventListener的useCapture參數(shù)設為true實現(xiàn)；2.事件冒泡是默認行為，useCapture設為false或省略；3.可使用event.stopPropagation()阻止事件傳播；4.冒泡支持事件委託，提高動態(tài)內(nèi)容處理效率；5.捕獲可用於提前攔截事件，如日誌記錄或錯誤處理。了解這兩個階段有助於精確控制JavaScript響應用戶操作的時機和方式。</p>
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<span id="377j5v51b" class="Articlelist_txts_time">Jun 26, 2025 am 12:54 AM</span>
<p class="Articlelist_txts_p">如果JavaScript應用加載慢、性能差，問題往往出在payload太大，解決方法包括：1.使用代碼拆分（CodeSplitting），通過React.lazy()或構(gòu)建工具將大bundle拆分為多個小文件，按需加載以減少首次下載量；2.移除未使用的代碼（TreeShaking），利用ES6模塊機制清除“死代碼”，確保引入的庫支持該特性；3.壓縮和合併資源文件，啟用Gzip/Brotli和Terser壓縮JS，合理合併文件並優(yōu)化靜態(tài)資源；4.替換重型依賴，選用輕量級庫如day.js、fetch</p>
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