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JavaScript: Create a new string without the first and last character of a given string

JavaScript Basic: Exercise-60 with Solution

Write a JavaScript program to create a new string without the first and last character of a given string.

Pictorial Presentation:

JavaScript:  Create a new string without the first and last character of a given string

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to create a new string without the first and last character of a given string.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function without_first_end(str) {
  return str.substring(1, str.length - 1);
}
console.log(without_first_end('JavaScript'));
console.log(without_first_end('JS'));
console.log(without_first_end('PHP'));

Sample Output:

avaScrip

H

Flowchart:

Flowchart: JavaScript - Create a new string without the first and last character of a given string

ES6 Version:

function without_first_end(str) {
  return str.substring(1, str.length - 1);
}
console.log(without_first_end('JavaScript'));
console.log(without_first_end('JS'));
console.log(without_first_end('PHP'));

Live Demo:

See the Pen JavaScript - Create a new string without the first and last character of a given string - basic-ex-60 by w3resource (@w3resource) on CodePen.


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Next: Write a JavaScript program to concatenate two strings except their first character.

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JavaScript: Tips of the Day

Returns the sum of the powers of all the numbers from start to end (both inclusive)

Example:

const sumPower = (end, power = 2, start = 1) =>
  Array(end + 1 - start)
    .fill(0)
    .map((x, i) => (i + start) ** power)
    .reduce((a, b) => a + b, 0);
console.log(sumPower(10)); // 385
console.log(sumPower(10, 3)); // 3025
console.log(sumPower(10, 3, 5)); // 2925 

Output:

385
3025
2925