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HTML DOM

DOM Attribute DOM Console DOM Document DOM Element DOM Events DOM Event Objects DOM Geolocation DOM History DOM HTMLCollection DOM Location DOM Navigator DOM Screen DOM Style
alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundColor backgroundImage backgroundPosition backgroundRepeat backgroundClip backgroundOrigin backgroundSize backfaceVisibility border borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage borderImageOutset borderImageRepeat borderImageSlice borderImageSource borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth borderRadius borderRight borderRightColor borderRightStyle borderRightWidth borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow boxSizing captionSide clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap cssFloat font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex
DOM Window WEB Storage

HTML Objects

<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> <style> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

Other References

CSSStyleDeclaration JS Conversion


HTML canvas ImageData data Property

❮ Canvas Object

Example

Create a 100*100 pixels ImageData object where every pixel is set to the color red:

Canvas

YourbrowserdoesnotsupporttheHTML5canvastag.

JavaScript:

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
var imgData = ctx.createImageData(100, 100);
for (var i = 0; i < imgData.data.length; i += 4) {
  imgData.data[i+0] = 255;
  imgData.data[i+1] = 0;
  imgData.data[i+2] = 0;
  imgData.data[i+3] = 255;
}
ctx.putImageData(imgData, 10, 10);
Try it Yourself »

Browser Support

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

Property
data 4.0 9.0 3.6 4.0 10.1

Definition and Usage

The data property returns an object that contains image data of the specified ImageData object.

For every pixel in an ImageData object there are four pieces of information, the RGBA values:

R - The color red (from 0-255)
G - The color green (from 0-255)
B - The color blue (from 0-255)
A - The alpha channel (from 0-255; 0 is transparent and 255 is fully visible)

The color/alpha information is held in an array, and is stored in the data property of the ImageData object.

Examples:

The syntax for making the first pixel in the ImageData object red:

imgData = ctx.createImageData(100, 100);

imgData.data[0] = 255;
imgData.data[1] = 0;
imgData.data[2] = 0;
imgData.data[3] = 255;

The syntax for making the second pixel in the ImageData object green:

imgData = ctx.createImageData(100, 100);

imgData.data[4] = 0;
imgData.data[5] = 255;
imgData.data[6] = 0;
imgData.data[7] = 255;

Tip: Look at createImageData(), getImageData(), and putImageData() to learn more about the ImageData object.


JavaScript Syntax

JavaScript syntax: imageData.data;

❮ Canvas Object