JavaScript: Test whether an array of integers of length 2 does not contain 1 or a 3
JavaScript Basic: Exercise-78 with Solution
Write a JavaScript program to test whether an array of integers of length 2 does not contain 1 or a 3.
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 test whether an array of integers of length 2 does not contain 1 or a 3.</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function is13(nums) {
if (nums.indexOf(1) == -1 && nums.indexOf(3) == -1){
return true;
} else {
return false;
}
}
console.log(is13([7, 8]));
console.log(is13([3, 2]));
console.log(is13([0, 1]));
Sample Output:
true false false
Flowchart:

ES6 Version:
function is13(nums) {
if (!nums.includes(1) && !nums.includes(3)){
return true;
} else {
return false;
}
}
console.log(is13([7, 8]));
console.log(is13([3, 2]));
console.log(is13([0, 1]));
Live Demo:
See the Pen JavaScript - Test whether an array of integers of length 2 does not contain 1 or a 3-basic-ex-78 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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