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  1. JavaScript String toLowerCase () Method - W3Schools

    Description The toLowerCase() method converts a string to lowercase letters. The toLowerCase() method does not change the original string.

  2. String.prototype.toLowerCase () - MDN Web Docs

    2025年7月10日 · The toLowerCase() method of String values returns this string converted to lower case.

  3. JavaScript toLowerCase() – How to Convert a String to ...

    2021年9月16日 · The toLowerCase() method converts the string specified into a new one that consists of only lowercase letters and returns that value. It means that the old, original string is …

  4. JavaScript toLowerCase () Method

    You'll learn how to use the JavaScript toLowerCase () method to return a string with all the characters converted to lowercase.

  5. JavaScript String toLowerCase () Method - GeeksforGeeks

    2024年9月6日 · The JavaScript toLowerCase () method converts all characters in a string to lowercase, returning a new string without modifying the original. It's commonly used for case …

  6. JavaScript String toLowerCase () - Convert to Lowercase

    2024年11月7日 · The toLowerCase() method in JavaScript is a straightforward and widely-used tool for converting a string to all lowercase letters. This method is particularly useful when you …

  7. How to Lowercase a String in JavaScript – toLowerCase() in JS

    2022年10月17日 · The toLowerCase() method is a string method that returns a new string that's completely lowercase. If the original string has uppercase letters, in the new string these will …