杨克强的个人代码仓库

1. 一键复制文本

// 兼容移动端与 PC
function copyText(text) {
  const input = document.createElement('input');
  input.value = text;
  document.body.appendChild(input);
  input.select();
  document.execCommand('copy');
  document.body.removeChild(input);
}

2. 防抖 (Debounce)

const debounce = (fn, delay = 300) => {
  let timer = null;
  return (...args) => {
    clearTimeout(timer);
    timer = setTimeout(() => fn.apply(this, args), delay);
  };
};

3. 暗黑模式检测 & 切换

// 优先读系统配色方案
const darkMode = window.matchMedia('(prefers-color-scheme: dark)');
function toggleDark(isDark) {
  document.documentElement.classList.toggle('dark', isDark);
}
toggleDark(darkMode.matches);
darkMode.addEventListener('change', e => toggleDark(e.matches));

4. 生成随机渐变背景

function randomGradient() {
  const hue = ~~(Math.random() * 360);
  return `linear-gradient(135deg, hsl(${hue}, 70%, 60%), hsl(${(hue + 40) % 360}, 70%, 60%))`;
}
document.body.style.background = randomGradient();

5. 本地 JSON 导出下载

function downloadJSON(data, filename = 'data.json') {
  const blob = new Blob([JSON.stringify(data, null, 2)], {type: 'application/json'});
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url; a.download = filename;
  a.click();
  URL.revokeObjectURL(url);
}