Question

How to check if a double variable contains an integer and not a floating point in TypeScript

Answer 1

let d: number = 9241278.0;

if (d == Math.floor(d)) {
    console.log("The double variable contains an integer");
}
else {
    console.log("The double variable contains a floating point");
}



/*
run:

"The double variable contains an integer" 

*/

 

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Answer 2

const d: number = 235423.0; 

console.log(Number.isInteger(d)); 



/*
run:

true 

*/

 

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