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JavaScript: Move last three character to the start of a specified string

JavaScript Basic: Exercise-62 with Solution

Write a JavaScript program to move last three character to the start of a given string. The string length must be greater or equal to three.

Pictorial Presentation:

JavaScript: Move last three character to the start of a specified string

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to move last three character to the start of a given string. The string length must be 3.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function right_three(str) {
     if (str.length > 1)
       {
         return str.slice(-3) + str.slice(0, -3);
       }
  return str;
}
console.log(right_three("Python"));
console.log(right_three("JavaScript"));
console.log(right_three("Hi"));

Sample Output:

honPyt
iptJavaScr
Hi

Flowchart:

Flowchart: JavaScript - Move last three character to the start of a specified string

ES6 Version:

function right_three(str) {
     if (str.length > 1)
       {
         return str.slice(-3) + str.slice(0, -3);
       }
  return str;
}
console.log(right_three("Python"));
console.log(right_three("JavaScript"));
console.log(right_three("Hi"));

Live Demo:

See the Pen JavaScript - Move last three character to the start of a specified string - basic-ex-62 by w3resource (@w3resource) on CodePen.


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Previous: Write a JavaScript program to concatenate two strings except their first character.
Next: Write a JavaScript program to create a string using the middle three characters of a given string of odd length.

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JavaScript: Tips of the Day

Parameter's value

function getItems(fruitList, ...args, favoriteFruit) {
  return [...fruitList, ...args, favoriteFruit]
}

getItems(["banana", "apple"], "pear", "orange")

...args is a rest parameter. The rest parameter's value is an array containing all remaining arguments, and can only be the last parameter! In this example, the rest parameter was the second parameter. This is not possible, and will throw a syntax error.

function getItems(fruitList, favoriteFruit, ...args) {
  return [...fruitList, ...args, favoriteFruit];
}


getItems(['banana', 'apple'], 'pear', 'orange');
The above example works. This returns the array [ 'banana', 'apple', 'orange', 'pear' ].

Ref: https://bit.ly/3jFRBje