Change String Based on a Condition in JavaScript

We are required to write a JavaScript function that takes in a string. The task of our function is to change the string according to the following condition −

• If the first letter in the string is a capital letter then we should change the full string to capital letters.
• Otherwise, we should change the full string to small letters.

Example

Following is the code −

const str1 = "This is a normal string"; const str2 = "thisIsACamelCasedString"; const changeStringCase = str => {    let newStr = '';    const isUpperCase = str[0].charCodeAt(0) >= 65 && str[0].charCodeAt(0) <= 90;    if(isUpperCase){       newStr = str.toUpperCase();    }else{       newStr = str.toLowerCase();    };    return newStr; }; console.log(changeStringCase(str1)); console.log(changeStringCase(str2));

Output

Following is the output in the console −

THIS IS A NORMAL STRING thisisacamelcasedstring