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JS Reference Manual

JS Reference Manual (Categorization)
JS Reference Manual (Alphabetical)

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 Priority
JS Statement
JS Type Array

Window

Object Window
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Window History
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Window Navigator
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HTML DOM

HTML Document
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HTML Event Obiya
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
API Web

HTML Obiya

<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>

其他参考手册

CSSStyleDeclaration
JS 类型转换

选修课

课程推荐：

CodeW3C.com baobx

JavaScript SQRT2 属性

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定义和用法

SQRT2 属性返回 2 的平方根，大约为 1.414。

实例

返回 2 的平方根：

Math.SQRT2;

亲自试一试

语法

Math.SQRT2

技术细节

返回值：	数值，表示 2 的平方根。
JavaScript 版本：	ECMAScript 1

Browser support

Math.SQRT2 Is ES1 feature (JavaScript 1999). All browsers fully support it:

Chrome	IE	Edge	Firefox	Safari	Opera
Support	Support	Support	Support	Support	Support

Tutorial:JavaScript mathematics

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Next page tan()
Return to previous level Kundin Tukuntarce JavaScript Math

Course Schedule

JS Reference Manual

JavaScript

Window

HTML DOM

Web API

HTML Obiya

其他参考手册

选修课

课程推荐：

JavaScript SQRT2 属性

定义和用法

实例

语法

技术细节

Browser support

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Kundin Tukuntarce JavaScript da HTML DOM

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