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JavaScript: Test whether the character at the provided character index is upper case

JavaScript String: Exercise-43 with Solution

Write a JavaScript function to test whether the character at the provided (character) index is upper case.

Test Data:
console.log(isUpperCaseAt('Js STRING EXERCISES', 1));
false

Pictorial Presentation:

JavaScript: Test whether the character at the provided character index is upper case

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to test whether the character at the provided index is upper case</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function isUpperCaseAt(str, index) {
 return str.charAt(index).toUpperCase() === str.charAt(index);
    }
console.log(isUpperCaseAt('Js STRING EXERCISES', 1));

Sample Output:

false

Flowchart:

Flowchart: JavaScript: Test whether the character at the provided character index is upper case

Live Demo:

See the Pen JavaScript Test whether the character at the provided character index is upper case-string-ex-43 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

Tagged template literals

function getPersonInfo(one, two, three) {
  console.log(one);
  console.log(two);
  console.log(three);
}

const person = 'Lydia';
const age = 21;

getPersonInfo`${person} is ${age} years old`;

If you use tagged template literals, the value of the first argument is always an array of the string values. The remaining arguments get the values of the passed expressions!

Ref: https://bit.ly/323Y0P6