JavaScript: Create a new array taking the first and last elements from a given array of integers and length must be greater or equal to 1
JavaScript Basic: Exercise-76 with Solution
Write a JavaScript program to create a new array taking the first and last elements from a given array of integers and length must be greater or equal to 1.
Pictorial Presentation:

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 array taking the first and last elements from a given array of integers and length must be greater or equal to 1.</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function started(nums) {
var array1 = [];
array1.push(nums[0], nums[nums.length - 1]);
return array1;
}
console.log(started([20, 20, 30]));
console.log(started([5, 2, 7, 8]));
console.log(started([17, 12, 34, 78]));
Sample Output:
[20,30] [5,8] [17,78]
Flowchart:

ES6 Version:
function started(nums) {
const array1 = [];
array1.push(nums[0], nums[nums.length - 1]);
return array1;
}
console.log(started([20, 20, 30]));
console.log(started([5, 2, 7, 8]));
console.log(started([17, 12, 34, 78]));
Live Demo:
See the Pen JavaScript - Create a new array taking the middle elements of the two arrays of integer and each length 3 - basic-ex-75 by w3resource (@w3resource) on CodePen.
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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"
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