Js rounds the mathematical function round to use the instance

The round function in js can be used to round Numbers, and it computes the first number after the decimal point.
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Math.round(number)

Here are some examples:

document.write(Math.round(2.65));// print 3
document.write(Math.round(7.05));// print 7
document.write(Math.round(-2.65));// print -3
document.write(Math.round(-8.15));// print -8
document.write(Math.round(11.65));// print 12

Round is rounded only to the first decimal place. If we want to round to the rest of the decimal place, we can multiply the number by a multiple of 10 and divide round by the same number:

var my_val=11.257;
var my_val=11.254;
document.write(Math.round(my_val*100)/100);
//print 11.25