AIWROK软件字符串大小写转换 字符串大小写转换使用函数
<span style="font-family: "Microsoft Yahei", Hei, Tahoma, SimHei, sans-serif; font-size: 22px; font-weight: 700;">AIWROK软件字符串大小写转换 字符串大小写转换使用函数</span><p></p><div><ne-clipboard 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%9A%84%E6%95%B0%E7%BB%84%EF%BC%8C%E7%84%B6%E5%90%8E%E4%BD%BF%E7%94%A8Array.prototype.map()%E6%96%B9%E6%B3%95%E9%81%8D%E5%8E%86%E6%AF%8F%E4%B8%AA%E5%AD%97%E7%AC%A6%E3%80%82%E5%AF%B9%E4%BA%8E%E6%AF%8F%E4%B8%AA%E5%AD%97%E7%AC%A6%EF%BC%8C%E6%88%91%E4%BB%AC%E6%A3%80%E6%9F%A5%E5%AE%83%E6%98%AF%E5%90%A6%E4%B8%BA%E5%A4%A7%E5%86%99%E5%AD%97%E6%AF%8D%EF%BC%88%E5%9C%A8%E2%80%99A%E2%80%99%E5%88%B0%E2%80%99Z%E2%80%99%E4%B9%8B%E9%97%B4%EF%BC%89%EF%BC%8C%E5%A6%82%E6%9E%9C%E6%98%AF%EF%BC%8C%E5%88%99%E5%B0%86%E5%85%B6%E8%BD%AC%E6%8D%A2%E4%B8%BA%E5%B0%8F%E5%86%99%EF%BC%9B%E5%A6%82%E6%9E%9C%E5%AE%83%E4%B8%BA%E5%B0%8F%E5%86%99%E5%AD%97%E6%AF%8D%EF%BC%88%E5%9C%A8%E2%80%99a%E2%80%99%E5%88%B0%E2%80%99z%E2%80%99%E4%B9%8B%E9%97%B4%EF%BC%89%EF%BC%8C%E5%88%99%E5%B0%86%E5%85%B6%E8%BD%AC%E6%8D%A2%E4%B8%BA%E5%A4%A7%E5%86%99%E3%80%82%E5%AF%B9%E4%BA%8E%E9%9D%9E%E5%AD%97%E6%AF%8D%E5%AD%97%E7%AC%A6%EF%BC%8C%E6%88%91%E4%BB%AC%E7%9B%B4%E6%8E%A5%E8%BF%94%E5%9B%9E%E5%AE%83%E4%BB%AC%EF%BC%8C%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%E3%80%82%E6%9C%80%E5%90%8E%EF%BC%8C%E4%BD%BF%E7%94%A8Array.prototype.join('')%E5%B0%86%E5%AD%97%E7%AC%A6%E6%95%B0%E7%BB%84%E9%87%8D%E6%96%B0%E7%BB%84%E5%90%88%E6%88%90%E4%B8%80%E4%B8%AA%E5%AD%97%E7%AC%A6%E4%B8%B2%E3%80%82%22%7D%5D%7D%2C%7B%22type%22%3A%22element%22%2C%22id%22%3A%22ua233127a%22%2C%22name%22%3A%22p%22%2C%22attrs%22%3A%7B%7D%2C%22children%22%3A%5B%7B%22type%22%3A%22text%22%2C%22id%22%3A%22u00b6e12f%22%2C%22name%22%3A%22%23text%22%2C%22attrs%22%3A%7B%7D%2C%22data%22%3A%22%22%7D%5D%7D%2C%7B%22type%22%3A%22element%22%2C%22id%22%3A%22u92fd32ef%22%2C%22name%22%3A%22p%22%2C%22attrs%22%3A%7B%7D%2C%22children%22%3A%5B%7B%22type%22%3A%22text%22%2C%22id%22%3A%22uc4ea36b2%22%2C%22name%22%3A%22%23text%22%2C%22attrs%22%3A%7B%7D%2C%22data%22%3A%22%E8%BF%99%E6%A0%B7%E5%B0%B1%E5%AE%9E%E7%8E%B0%E4%BA%86%E5%AD%97%E7%AC%A6%E4%B8%B2%E4%B8%AD%E6%AF%8F%E4%B8%AA%E5%AD%97%E7%AC%A6%E5%A4%A7%E5%B0%8F%E5%86%99%E7%9A%84%E5%88%87%E6%8D%A2%EF%BC%8C%E5%90%8C%E6%97%B6%E4%BF%9D%E7%95%99%E6%A0%87%E7%82%B9%E7%AC%A6%E5%8F%B7%E5%92%8C%E5%85%B6%E4%BB%96%E9%9D%9E%E5%AD%97%E6%AF%8D%E5%AD%97%E7%AC%A6%E7%9A%84%E4%BD%8D%E7%BD%AE%E4%B8%8D%E5%8F%98%E3%80%82%22%7D%5D%7D%5D%2C%22attrs%22%3A%7B%7D%7D" source="https%3A%2F%2Fwww.yuque.com%2Faiwork%2Fnba2pr%2Fhdmvkcler3de5qwr"></ne-clipboard><div class="lake-content" typography="classic"><p id="udbacbd94" class="ne-p" style="min-height: 24px;"><strong><span class="ne-text" style="color: rgb(52, 58, 64); font-size: 24px">字符串大小写转换 字符串大小写转换使用函数</span></strong></p><pre data-language="javascript" id="JKXAy" class="ne-codeblock language-javascript" style="border: 1px solid #e8e8e8; border-radius: 2px; background: #f9f9f9; padding: 16px; font-size: 13px; color: #595959"><code>let originalString = "Hello, World!";let mixedCaseString = originalString.toUpperCase().toLowerCase(); // 实际上是多余的，因为结果和原始字符串的小写形式相同
console.log(mixedCaseString); // 输出: hello, world!
// 条件转换示例
function toggleCase(str) {
return str === str.toUpperCase() ? str.toLowerCase() : str.toUpperCase();
}
printl(toggleCase("HELLO")); // 输出: hello
printl(toggleCase("hello")); // 输出: HELLO
</code></pre><p id="ua75e24f1" class="ne-p" style="min-height: 24px;"><span class="ne-text">定义了一个原始字符串originalString，其值为"Hello, World!"。</span></p><p id="u44f27589" class="ne-p" style="min-height: 24px;"><span class="ne-text"></span></p><p id="u8e6cbe79" class="ne-p" style="min-height: 24px;"><span class="ne-text">然后，创建了另一个变量mixedCaseString，它通过将originalString转换为大写后再转换为小写来赋值。实际上，这段代码中的toUpperCase().toLowerCase()是多余的，因为一个字符串先转换为大写再转换为小写，结果总是该字符串的小写形式。因此，mixedCaseString的值与originalString的小写形式相同，即"hello, world!"。最后，使用console.log输出了mixedCaseString的值。</span></p><p id="u2e5af9f0" class="ne-p" style="min-height: 24px;"><span class="ne-text"></span></p><p id="u38431247" class="ne-p" style="min-height: 24px;"><span class="ne-text">接下来的代码定义了一个函数toggleCase，用于切换字符串中字符的大小写。函数接受一个字符串参数str，并检查该字符串是否等于其大写形式。如果是，则返回该字符串的小写形式；如果不是，则返回该字符串的大写形式。</span></p><p id="u124a4b15" class="ne-p" style="min-height: 24px;"><span class="ne-text"></span></p><p id="u3260f902" class="ne-p" style="min-height: 24px;"><span class="ne-text">最后，调用了toggleCase函数两次，分别传入全大写的"HELLO"和全小写的"hello"，并尝试使用printl输出结果。但是注意，在JavaScript中，正确的输出函数应该是console.log而不是printl，因此正确的调用方式应该是：</span></p><p id="uf8f35bdf" class="ne-p" style="min-height: 24px;"><span class="ne-text"></span></p><pre data-language="javascript" id="rJIHi" class="ne-codeblock language-javascript" style="border: 1px solid #e8e8e8; border-radius: 2px; background: #f9f9f9; padding: 16px; font-size: 13px; color: #595959"><code>// 示例字符串
let exampleString = "Hello, World! This is a Test. Let's see: how it works; now.";
// 函数：切换每个单词的大小写
function toggleWordCase(str) {
// 使用正则表达式匹配每个单词
return str.replace(/\b(+)\b/g, function(match) {
// 如果整个单词是大写的，则转换为小写
if (match === match.toUpperCase()) {
return match.toLowerCase();
} else {
// 否则，将单词转换为大写
return match.toUpperCase();
}
});
}
// 输出结果
console.log(toggleWordCase(exampleString));
// 输出: "hELLO, wORLD! tHIS iS A tEST. lET'S sEE: hOW iT wORKS; nOW."
</code></pre><p id="uf16a3f23" class="ne-p" style="min-height: 24px;"><span class="ne-text">我们使用String.prototype.split('')将字符串拆分为单个字符的数组，然后使用Array.prototype.map()方法遍历每个字符。对于每个字符，我们检查它是否为大写字母（在’A’到’Z’之间），如果是，则将其转换为小写；如果它为小写字母（在’a’到’z’之间），则将其转换为大写。对于非字母字符，我们直接返回它们，保持不变。最后，使用Array.prototype.join('')将字符数组重新组合成一个字符串。</span></p><p id="ua233127a" class="ne-p" style="min-height: 24px;"><span class="ne-text"></span></p><p id="u92fd32ef" class="ne-p" style="min-height: 24px;"><span class="ne-text">这样就实现了字符串中每个字符大小写的切换，同时保留标点符号和其他非字母字符的位置不变。</span></p></div></div>
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