40 lines
1.3 KiB
HTML
40 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<link rel="stylesheet" href="" />
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<title>斐波那契数列生成器</title>
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</head>
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<body>
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<h1>斐波那契数列生成器</h1>
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<h2>作者：赵海洋</h2>
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<p>斐波那契数列由0和1开始，之后的斐波那契数就是由之前的两数相加而得出。</p>
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<div>
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<input type="text" id="number" placeholder="输入一个正整数" />
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<button onclick="go()">生成斐波那契数列</button>
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</div>
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<p><code id="seq"></code></p>
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<script>
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// 斐波那契数列生成器
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function* fibonacci(max = 1000) {
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let current = 0
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let next = 1
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while (current < max) {
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yield current
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let prev = current
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current = next
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next += prev
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}
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}
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function go() {
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if (number.value.match(/^\d+$/)) {
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seq.innerText = [...fibonacci(number.value)].join(', ')
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number.value = ''
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} else alert('请输入一个正整数')
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}
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</script>
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</body>
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</html> |