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JavaScript: Replace every character in a given string with the character following it in the alphabet

JavaScript Basic: Exercise-49 with Solution

Write a JavaScript program to replace every character in a given string with the character following it in the alphabet.

Pictorial Presentation:

JavaScript: Replace every character in a given string with the character following it in the alphabet

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to replace every character in a given string with the character following it in the alphabet.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function string_reverse(str) 
function LetterChanges(text) {
//https://goo.gl/R8gn7u
var s = text.split('');
for (var i = 0; i < s.length; i++) {
// Caesar cipher
switch(s[i]) {
case ' ':
break;
case 'z':
s[i] = 'a';
break;
case 'Z': 
s[i] = 'A';
break;
default:
s[i] = String.fromCharCode(1 + s[i].charCodeAt(0));
}

// Upper-case vowels
switch(s[i]) {
case 'a': case 'e': case 'i': case 'o': case 'u':
s[i] = s[i].toUpperCase();
}
}
return s.join('');
}
console.log(LetterChanges("PYTHON"));
console.log(LetterChanges("W3R"));
console.log(LetterChanges("php"));

Sample Output:

QZUIPO
X4S
qIq

Flowchart:

Flowchart: JavaScript - Replace every character in a given string with the character following it in the alphabet

Live Demo:

See the Pen JavaScript - Replace every character in a given string with the character following it in the alphabet - basic-ex-49 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to reverse a given string.
Next: Write a JavaScript program to capitalize the first letter of each word of a given string.

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JavaScript: Tips of the Day

Converts a string to title case

Example:

const toTitleCase = str =>
  str
    .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
    .map(x => x.charAt(0).toUpperCase() + x.slice(1))
    .join(' ');
console.log(toTitleCase('some_database_field_name')); // 'Some Database Field Name'
console.log(toTitleCase('Some label that needs to be title-cased')); // 'Some Label That Needs To Be Title Cased'
console.log(toTitleCase('some-package-name')); // 'Some Package Name'
console.log(toTitleCase('some-mixed_string with spaces_underscores-and-hyphens')); // 'Some Mixed String With Spaces Underscores And Hyphens' 

Output:

"Some Database Field Name"
"Some Label That Needs To Be Title Cased"
"Some Package Name"
"Some Mixed String With Spaces Underscores And Hyphens"