Question

How to round a number up or down to the nearest 10 in JavaScript

Answer 1

function roundUpOrDowntoNearest10(num) {
    return Math.round(num / 10) * 10;
}
 
console.log(roundUpOrDowntoNearest10(33)); 
console.log(roundUpOrDowntoNearest10(59)); 
console.log(roundUpOrDowntoNearest10(59.99));
console.log(roundUpOrDowntoNearest10(51));
console.log(roundUpOrDowntoNearest10(43.14)); 
console.log(roundUpOrDowntoNearest10(25)); 
console.log(roundUpOrDowntoNearest10(-12));
console.log(roundUpOrDowntoNearest10(-11)); 
console.log(roundUpOrDowntoNearest10(-19));
  
    
    
    
/*
    
run:
    
30
60
60
50
40
30
-10
-10
-20
    
*/

 

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