How do I make the first letter of a string uppercase in JavaScript? How do I make the first letter of a string uppercase, but not change the case of any of the other letters? For example: this is a test -> This is a test the Eiffel Tower -> The Eiffel Tower /index.html -> /index.html Most Best Solution: Another solution: function capitalizeFirstLetter(string) { return string.charAt(0).toUpperCase() + string.slice(1); } You could also add it to the String.prototype so you could chain it with other methods: