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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document< 阅读全文
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<button>点击停止定时器</button> <script> var btn = document.querySelector('button'); function callback() { console.log('爆炸了'); } var timer = setTimeout(callb 阅读全文
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案例 按 s 让搜索框获取焦点 阅读全文
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图片跟随鼠标移动 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title> 阅读全文