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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 index provided 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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Next: Write a JavaScript function to test whether the character at the provided character index is lower case.

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JavaScript: Tips of the Day

Assigns default values for all properties in an object that are undefined

Example:

const tips_defaults = (obj, ...defs) => Object.assign({}, obj, ...defs.reverse(), obj);
console.log(tips_defaults({ p: 1 }, { q: 2 }, { q: 6 }, { p: 3 }));

Output:

[object Object] {
  p: 1,
  q: 2
}

 

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