isLowerCase javascript Code Snippet in 2025
stringbeginner
Last Updated: 16 March 2025
Checks if a string is lower case.
- Convert the given string to lower case, using
String.prototype.toLowerCase()and compare it to the original.
const isLowerCase = str => str === str.toLowerCase();
isLowerCase('abc'); // true
isLowerCase('a3@$'); // true
isLowerCase('Ab4'); // falsejavascript snippet similar to isLowerCase For You in March 2025
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