String.prototype.toLowerCase()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.
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const sentence = "The quick brown fox jumps over the lazy dog.";
console.log(sentence.toLowerCase());
// Expected output: "the quick brown fox jumps over the lazy dog."
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console.log("ALPHABET".toLowerCase()); // 'alphabet'
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-string.prototype.tolowercase |