How can I round to whole numbers in JavaScript?
JavascriptOperatorsRoundingJavascript Problem Overview
I have the following code to calculate a certain percentage:
var x = 6.5;
var total;
total = x/15*100;
// Result 43.3333333333
What I want to have as a result is the exact number 43 and if the total is 43.5 it should be rounded to 44
Is there way to do this in JavaScript?
Javascript Solutions
Solution 1 - Javascript
Use the Math.round() function to round the result to the nearest integer.
Solution 2 - Javascript
//method 1
Math.ceil(); // rounds up
Math.floor(); // rounds down
Math.round(); // does method 2 in 1 call
//method 2
var number = 1.5; //float
var a = parseInt(number); // to int
number -= a; // get numbers on right of decimal
if(number < 0.5) // if less than round down
round_down();
else // round up if more than
round_up();
either one or a combination will solve your question
Solution 3 - Javascript
total = Math.round(total);
Should do it.
Solution 4 - Javascript
Use Math.round to round the number to the nearest integer:
total = Math.round(x/15*100);
Solution 5 - Javascript
a very succinct solution for rounding a float x:
x = 0|x+0.5
or if you just want to floor your float
x = 0|x
this is a bitwise or with int 0, which drops all the values after the decimal