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JavaScript: Display a message when a number is between a range

JavaScript Basic: Exercise-8 with Solution

Write a JavaScript program where the program takes a random integer between 1 to 10, the user is then prompted to input a guess number. If the user input matches with guess number, the program will display a message "Good Work" otherwise display a message "Not matched"

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Guess a number</title>
</head>
<body>
</body>
</html>

JavaScript Code:

// Get a random integer from 1 to 10 inclusive
 const num = Math.ceil(Math.random() * 10);
console.log(num);
 const gnum = prompt('Guess the number between 1 and 10 inclusive');
 if (gnum == num)
   console.log('Matched');
  else
   console.log('Not matched, the number was '+gnum);
   

Sample Output:

Matched

Explanation:

The Math.ceil() function is used to get the smallest integer greater than or equal to a given number.

The Math.random() function is used to get a floating-point, pseudo-random number in the range [0, 1] that is, from 0 (inclusive) up to but not including 1 (exclusive), which you can then scale to your desired range.

Flowchart:

Flowchart: JavaScript - Display a message when a number is between a range

ES6 Version:

// Get a random integer from 1 to 10 inclusive
var num = Math.ceil(Math.random() * 10);
console.log(num);
var gnum = prompt('Guess the number between 1 and 10 inclusive');
if (gnum == num) console.log('Matched');else console.log('Not matched, the number was ' + gnum);

Live Demo:

See the Pen JavaScript basic animation - basic-ex-8 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"