How to use tolowercase in js

The toLowerCase() method in JavaScript converts all characters in the string to lowercase and returns a new converted string. The original string is not affected: Usage: string.toLowerCase() Return value: Conversion After the new string, all characters are lowercase. Note: The original string will not be modified, only a new converted string will be returned.

JavaScript Usage of toLowerCase()

The toLowerCase() method is a built-in string method in JavaScript, used to convert all characters in the string to lowercase.

Usage:

<code>string.toLowerCase()</code>

Returns:

The toLowerCase() method returns a new string containing the original All characters in the string are converted to lowercase. The original string itself is not modified.

Example:

<code>const str = "HELLO WORLD";
const lowerCaseStr = str.toLowerCase();

console.log(lowerCaseStr); // 输出: "hello world"</code>

Note:

• toLowerCase() method does not modify the original string, Just return a new converted string.
• The toLowerCase() method works for any string type.
• If the string is empty, the toLowerCase() method will return an empty string.
• For Unicode characters, the toLowerCase() method will convert according to the Unicode standard.

The above is the detailed content of How to use tolowercase in js. For more information, please follow other related articles on the PHP Chinese website!