JavaScript Code

Problem Statement

given a number, write a JavaScript program to check if this number is finite or not

Solution

to check if given number is finite, call isFinite() global function and pass the number as argument. the function returns true if the number is finite, or false if not

isFinite(n)

Programs

1. check if the number n is finite

var n = 25;
if ( isFinite(n) ) {
    console.log('n is finite');
} else {
    console.log('n is not finite');
}

2. take an expression of integer divided by zero in n , and programmatically check if the number n is finite

var n = 3 / 0;
if ( isFinite(n) ) {
    console.log('n is finite');
} else {
    console.log('n is not finite');
}

3. take infinity in n, and programmatically check if the number n is finite

var n = Infinity;
if ( isFinite(n) ) {
    console.log('n is finite');
} else {
    console.log('n is not finite');
}