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JS referentieshandleiding

  • JS referentieshandleiding (categorieën volgorde)
  • JS referentieshandleiding (alfabetische volgorde)

JavaScript

  • JS array
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  • JS 运算符
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JS Typisierte Array

  • Window Object
  • Window
  • Window Console
  • Window Geschiedenis
  • Window Locatie
  • Window Navigator

Window Scherm

  • HTML DOM
  • HTML Document
  • HTML Element
  • HTMLAttribuut
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  • HTML Event Object
  • HTML Collectie
  • HTML NodeList
  • HTML DOMTokenList

HTML Stijl

  • Web API
  • API Canvas
  • API Console
  • API Fetch
  • API Volledig Scherm
  • API Locatie
  • API Geschiedenis
  • API MediaQueryList
  • API Opslag
  • API Validatie

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> knop
  • <input> keuzevak
  • <input> kleur
  • <input> datum
  • <input> datum-local
  • <input> e-mail
  • <input> bestand
  • <input> verborgen
  • <input> afbeelding
  • <input> maand
  • number
  • password
  • radio
  • range
  • reset
  • search
  • submit
  • text
  • time
  • url
  • week

    11. JavaScript:

      var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.rotate(20*Math.PI/180);
ctx.fillRect(50,20,100,50);

      亲自试一试

      语法

      context.rotate(angle);

      参数值

      参数 描述
      angle

      旋转角度，以弧度计。

      如需将角度转换为弧度，请使用 degrees*Math.PI/180 公式进行计算。

      Example: To rotate 5 degrees, you can specify the following formula: 5 * Math.PI / 180.

      Browser support

      The numbers in the table indicate the first browser version that fully supports this property.

      Chrome Edge Firefox Safari Opera
      Chrome Edge Firefox Safari Opera
      4.0 9.0 3.6 4.0 10.1

      Note:Internet Explorer 8 and earlier versions do not support the <canvas> element.

      Canvas reference manual

      Toolbox

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