javascript round to int code example

Example 1: how to displayan inteiger to a tenth in javascript

Math.round(3.14159 * 100) / 100  // 3.14

3.14159.toFixed(2);              // 3.14 returns a string
parseFloat(3.14159.toFixed(2));  // 3.14 returns a number

Math.round(3.14159)  // 3
Math.round(3.5)      // 4
Math.floor(3.8)      // 3
Math.ceil(3.2)       // 4

Example 2: rounding off numbers javascript

Math.round(3.14159 * 100) / 100  // 3.14

3.14159.toFixed(2);              // 3.14 returns a string
parseFloat(3.14159.toFixed(2));  // 3.14 returns a number

Example 3: round down the number javascript

+3.5 => +3.0
-3.5 => -4.0

+3.5 => +3.0 using Math.floor()
-3.5 => -3.0 using Math.ceil()

Example 4: math.round in javascript

let xo =7.45;
xo = Math.round(xo);
// output = 7;

Example 5: how to round numbers in javscript

//You can do this instead of using math.round! It is easier to understand using this function!

var x = 5.0364342423;
console.log(x.toFixed(2));
//result should be 5.04