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Math.trunc() Method with Example in JavaScript

JavaScript | Math.trunc() Method: Here, we are going to learn about the trunc() method of Math class in JavaScript with Examples.
Submitted by Shivang Yadav, on February 04, 2020

JavaScript | Math.trunc() Method

Math.trunc() is a function in math library of JavaScript that is used to extract the integer part of the given floating-point number. It removes the decimal and all the digits after it (right of it).

Syntax

    Math.trunc(value);

Parameters

• value – represents the value which is the float from which integer values is to be extracted.

Return Value

The return type of this method is number, it returns an integer.

Values accepted

Integer, floating-point, numeric string.

Invalid values

Non-numeric string, empty variable, empty array all will return NaN (Not a Number).

Browser support

Chrome, Internet asinlorer, Mozilla, Safari, Opera mini.

Example 1: Valid values

console.log(Math.trunc(5.4));
console.log(Math.trunc(-3.87646801));
console.log(Math.trunc(0));
console.log(Math.trunc("-0.65"));

Output

5
-3
0
-0

Example 2: Invalid values

console.log(Math.trunc("Javascript"));

Output

NaN

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