代码片段仓库

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package com.example;

import org.springframework.boot.*;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan("com.example")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

class CustomButton extends HTMLButtonElement {
  constructor() {
    super();
    this.innerText = 'Click Me';
    this.style.backgroundColor = 'blue';
    this.style.color = 'white';
    this.addEventListener('click', () => {
      alert('Button clicked!');
    });
  }
}

customElements.define('custom-button', CustomButton);

const canvas = document.getElementById('myCanvas');
const ctx = canvas.getContext('2d');

// Draw rectangle
ctx.fillStyle = '#FF0000';
ctx.fillRect(10, 10, 150, 80);

// Draw circle
ctx.beginPath();
ctx.arc(250, 100, 50, 0, 2 * Math.PI);
ctx.fillStyle = '#0000FF';
ctx.fill();

// Draw text
ctx.font = '30px Arial';
ctx.fillStyle = '#000000';
ctx.fillText('Happy Coding', 150, 200);

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// main.js
const worker = new Worker('worker.js');

worker.onmessage = (e) => {
  console.log('Result:', e.data);
};

worker.postMessage(1000000);

// worker.js
self.onmessage = (e) => {
  let result = 0;
  for(let i = 0; i < e.data; i++) {
    result += i;
  }
  self.postMessage(result);
};