How to capitalize first letter and lowercase the rest of the string

Question

I am trying to capitalize the first letter of only the first word in a sentence.

This is the data in the tsx file { this.text({ id: downloadPriceHistory

Answer 1

try - make the rest of the string in lowercase as well.

export function titleCase(string) {
     return string[0].toUpperCase() + string.substr(1).toLowerCase()
}