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JS Reference Manual

JS Reference Manual (Categorical Order)
JS Reference Manual (Alphabetical Order)

JavaScript

JS Array
JS Boolean
JS Class
JS Date
JS Error
JS Global
JS JSON
JS Map
JS Math
JS Number
JS Promise
JS RegExp
JS Set
JS String
JS Object
JS Operator
JS Operator Precedence
JS Statement
JS Typed Array

Window

Window Object
Window Console
Window History
Window Location
Window Navigator
Window Screen

HTML DOM

HTML Document
HTML Element
HTML Attribute
HTML Event
HTML Event Object
HTML Collection
HTML NodeList
HTML DOMTokenList
HTML Style

Web API

API Canvas
API Console
API Fetch
API Fullscreen
API Geolocation
API History
API MediaQueryList
API Storage
API Validation
Web API

HTML Object

<a>
<abbr>
<address>
<area>
<article>
<aside>
<audio>
<b>
<base>
<bdo>
<blockquote>
<body>
<br>
<button>
<canvas>
<caption>
<cite>
<code>
<col>
<colgroup>
<datalist>
<dd>
<del>
<details>
<dfn>
<dialog>
<div>
<dl>
<dt>
<em>
<embed>
<fieldset>
<figcaption>
<figure>
<footer>
<form>
<head>
<header>
<h1> - <h6>
<hr>
<html>
<i>
<iframe>
<img>
<ins>
<input> button
<input> checkbox
<input> color
<input> date
<input> datetime
<input> datetime-local
<input> email
<input> file
<input> hidden
<input> image
<input> month
<input> number
<input> password
<input> radio
<input> range
<input> reset
<input> search
<input> submit
<input> text
<input> time
<input> url
<input> week
<kbd>
<label>
<legend>
<li>
<link>
<map>
<mark>
<menu>
<menuitem>
<meta>
<meter>
<nav>
<object>
<ol>
<optgroup>
<option>
<output>
<p>
<param>
<pre>
<progress>
<q>
<s>
<samp>
<script>
<section>
<select>
<small>
<source>
<span>
<strong>
<sub>
<summary>
<sup>
<table>
<tbody>
<td>
<tfoot>
<th>
<thead>
<tr>
<textarea>
<time>
<title>
<track>
<u>
<ul>
<var>
<video>

Other Reference Manuals

CSSStyleDeclaration
JS Type Conversion

Elective Course

Course Recommendation:

CodeW3C.com Treasure Box

JavaScript trunc() Method

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Definition and Usage

trunc() The method returns the integer part of the number.

Note:This method does not round the number up or down to the nearest integer, it simply removes the decimal part.

Example

Returns the integer part of a number:

Math.trunc(8.76);

Try It Yourself

Syntax

Math.trunc(x)

Parameter Value

Parameter	Description
x	Required. Number.

Technical Details

Return Value:	Numbers.
JavaScript Version:	ECMAScript 6

Browser Support

Method	Chrome	Edge	Firefox	Safari	Opera
trunc()	38	12	25	8	25

Tutorial:JavaScript Mathematics

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Next Page abs()
Go to the Previous Level JavaScript Math Reference Manual