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:
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:
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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Previous: Write a JavaScript function to uncapitalize each word in the string.
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
How to insert an item into an array at a specific index (JavaScript)?
What you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:
var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr[2] = "Stale"; arr[3] = "Kai Jim"; arr[4] = "Borge"; console.log(arr.join()); arr.splice(2, 0, "Lene"); console.log(arr.join());
Ref: https://bit.ly/2BXbp04
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