JavaScript Math trunc() Method

The Math.trunc() method in JavaScript returns the integer part of a number by removing its fractional part. It essentially truncates the decimal portion of a number towards zero, resulting in an integer.

For positive numbers, it’s equivalent to flooring the number, while for negative numbers, it’s akin to ceiling the number.

Syntax:

Math.trunc(value)

Parameters:

This method accepts a single parameter as mentioned above and described below:

• value. It is the floating-point number that is to be sent to the Math.trunc() function.

Return Value:

The Math.trunc() method returns the integer part of the given number. More codes for the above method are as follows: 

Example 1: Truncating Positive Number

When a positive float number passed as a parameter 

console.log(Math.trunc(15.56)); 

15

Example 2: Truncating Negative Number

When a negative number of a float type is passed as a parameter 

console.log(Math.trunc(-15.56));   

-15

Example 3: Passing Number between 0 and 1.

Here, we are passing number between 0 and 1.

console.log(Math.trunc(0.236));

0

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

Supported Browsers:

• Chrome 51
• Edge 15
• Firefox 54
• Safari 10
• Opera 38