How to create a clickable shape with SVG and Javascript? - javascript

HTML
<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8'>
<script src="http://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src='draw.js'></script>
</head>
<body>
<svg xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" width="600" height="200"></svg>
</body>
</html>
draw.js
function draw() {
var svg = document.getElementsByTagName('svg')[0];
var svgNS = svg.namespaceURI;
var rect = document.createElementNS(svgNS,'rect');
rect.setAttribute('x',5);
rect.setAttribute('y',5);
rect.setAttribute('width',100);
rect.setAttribute('height',36);
rect.setAttribute('fill','#95B3D7');
var link = document.createElement('a');
link.setAttribute('xlink:href', 'http://www.google.com');
link.appendChild(rect);
svg.appendChild(link);
}
$( document ).ready( draw );
The generated HTML looks correct, but the rectangle does not appear:
<a xlink:href="http://www.google.com">
<rect x="5" y="5" width="100" height="36" fill="#95B3D7"></rect>
</a>
In fact, the generated HTML does work, when pasted into an HTML file. So, is there some limitation of the browser using SVG, Javascript and links?
Using Chrome 39.

You need to create an SVG link element and not a html link element i.e. in the SVG namespace
var link = document.createElementNS(svgNS, 'a');
link.setAttributeNS('http://www.w3.org/1999/xlink', 'xlink:href', 'http://www.google.com');
You get it right for the rect itself!

Related

Insert SVG file into HTML

I've got 3 files: test.html, test.js and test.svg
I'm trying to call the different files into HTML but the file svg don't work
test.html
<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Using SVG as an object</title>
<link href="index.css" rel="stylesheet" />
</head>
<body>
<h1>Test</h1>
<script type="text/javascript" src="test.js"></script>
<object data="test.svg" width="300" height="300"> </object> <!-- Not working -->
<input type="button" value="Start Animation" onclick="startAnimation();">
<input type="button" value="Stop Animation" onclick="stopAnimation();">
</body>
</html>
test.js
var timerFunction = null;
function startAnimation() {
if(timerFunction == null) {
timerFunction = setInterval(animate, 20);
}
}
function stopAnimation() {
if(timerFunction != null){
clearInterval(timerFunction);
timerFunction = null;
}
}
function animate() {
var circle = document.getElementById("circle1");
var x = circle.getAttribute("cx");
var newX = 2 + parseInt(x);
if(newX > 500) {
newX = 20;
}
circle.setAttribute("cx", newX);
}
test.svg
<svg width="500" height="100">
<circle id="circle1" cx="20" cy="20" r="10"
style="stroke: none; fill: #ff0000;"/>
</svg>
I don't understand why I can't insert svg file with object
Thanks for your help
See Dev.To Post: <load-file> Web Component
Use a modern, native W3C standard Web Component <load-svg>
it reads the SVG as text
adds SVG to shadowDOM as DOM element
moves the style element from lightDOM to shadowDOM
So style is only applied to one SVG
<load-svg shadowRoot src="//graphviz.org/Gallery/directed/fsm.svg">
<style>
svg { height:150px } text { stroke: green } path { stroke: red ; stroke-width:3 }
</style>
</load-svg>
<load-svg src="//graphviz.org/Gallery/directed/fsm.svg">
<!-- all HTML here is overwritten -->
</load-svg>
<script>
customElements.define('load-svg', class extends HTMLElement {
async connectedCallback() {
this.style.display = 'none'; // prevent FOUC (provided Custom Element is defined ASAP!)
let src = this.getAttribute("src");
let svg = await (await fetch(src)).text();
if (this.hasAttribute("shadowRoot")) {
this.attachShadow({mode:"open"}).innerHTML = svg;
this.shadowRoot.append(this.querySelector("style") || []);
} else {
this.innerHTML = svg;
}
this.style.display = 'inherit';
}
});
</script>
More complex example: How to make an svg interactive to gather comments/annotations on depicted elements
You can use svgs directly in the HTML. Easiest is to just use the SVG inside the HTML. You can also re-use an svg shape on a page but then the icons have a shadow-dom boundary.
If you use an object or svg tag, it will render just fine but you will lose all information about classes, IDs and so on in the SVG.
Further Information on SVG on css-tricks
More information about how to group and re-use shapes in SVG on css-tricks (and one more, also on css-tricks)
var timerFunction = null;
function startAnimation() {
if (timerFunction == null) {
timerFunction = setInterval(animate, 20);
}
}
function stopAnimation() {
if (timerFunction != null) {
clearInterval(timerFunction);
timerFunction = null;
}
}
function animate() {
var circle = document.getElementById("circle1");
var x = circle.getAttribute("cx");
var newX = 2 + parseInt(x);
if (newX > 500) {
newX = 20;
}
circle.setAttribute("cx", newX);
}
<svg width="500" height="100">
<circle id="circle1" cx="20" cy="20" r="10"
style="stroke: none; fill: #ff0000;"/>
</svg>
<input type="button" value="Start Animation" onclick="startAnimation();">
<input type="button" value="Stop Animation" onclick="stopAnimation();">
<object> tags can be used on many elements, including SVG files, and therefore not recognized as image elements, So:
It's not available on image search. So you can use an <img> tag as fallback (optional but recommended)
You should specify the type of the object
So you can change it like this:
<object type="image/svg+xml" data="test.svg" width="300" height="300">
<img src="test.svg" />
</object>
And another problem is the SVG file. Based on MDN documents :
The xmlns attribute is only required on the outermost SVG element of SVG documents. It is unnecessary for inner SVG elements or inside HTML documents.
so you need to add xmlns parameters to the SVG tag on SVG file like this :
<svg width="500" height="100" xmlns="http://www.w3.org/2000/svg">
<circle id="circle1" cx="20" cy="20" r="10"
style="stroke: none; fill: #ff0000;"/>
</svg>
I made a small simple example that works, checkout this sandBox link

How do I add an embedded sprite to DOM in javascript

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title></title>
<style>
svg{ display: inline-block; }
</style>
<script src="my.js"></script>
</head>
<body>
<embed src="sprites.svg" type="image/svg+xml" width="0" height="0" />
<svg id="MAIN" xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 320 208" shape-rendering="crispEdges">
<path d="M0 0h320v208h-320v-208z" fill="#000"/> <!-- Fill screen -->
<svg id="sprite1"><use xlink:href="sprites.svg#SP1" x="64" y="128"</use></svg>
<svg id="sprite2"><use xlink:href="sprites.svg#SP2" x="64" y="128"</use></svg>
<svg id="sprite3"><use xlink:href="sprites.svg#SP3" x="64" y="128"</use></svg>
</svg>
<script>
start( 1 ); // Call Func in my.js
</script>
</body>
</html>
I have hundreds of sprites in "sprites.svg". How do I, in javascript add the sprites I want to the DOM via javascript. I want them added so that they are just like sprite1 to sprite3 in the example html page above, thanks Keith
Worked it out, not as complex as I thought.
var svgURI = "http://www.w3.org/2000/svg";
var mainSVG = document.getElementById( "MAIN" ); // my main SVG
var svg = document.createElementNS( svgURI, 'svg' );
svg.id = "sprite4";
svg.innerHTML = "<use xlink:href='sprites.svg#SP4'></use>";
mainSVG.appendChild( svg );
Thanks to every one who tried to help

How to redraw SVG after change from javascript (Internet Explorer and Edge)

Does anyone know how to force IE and Edge to display/refresh embedded SVG after changing its content (see code below)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Title</title>
<script type="text/javascript">
function onClick() {
document.getElementById('svg').innerHTML = '<circle r="50" cx="50" cy="50" fill="red" />';
}
</script>
</head>
<body>
<button type="button" onclick="onClick()" >Display red circle</button>
<svg id="svg"/>
</body>
</html>
Modify your markup as
<div id="container">
Your svg here
</div>
and add
document.getElementById("container").innerHTML += "";
at the end of your script.
As it was mentioned by #rzelek, SVG image will get updated on it's own if you add elements with svg.appendChild() rather than by assigning to svg.innerHTML.
One caveat, though: you must specify the http://www.w3.org/2000/svg namespace on the element you create using document.createElementNS(), instead of the normal createElement().
Example:
const circle = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
circle.setAttribute('r', '50');
circle.setAttribute('cx', '50');
circle.setAttribute('cy', '50');
circle.setAttribute('fill', 'red');
document.getElementById('svg').appendChild(circle);
JSFiddle
Basically, you do not need to reload anything. Actually, the problem is different. You will not able to interact with SVG using standard innerHTML method. Your SVG is not updated after calling to innerHTML. This method is suitable for editing HTML elements only.
Plase take a look at this:
update SVG dynamically
Plunker
JS:
var x = 0;
function onClick() {
var div = document.getElementById('svg');
Update(div);
}
function Update(div){
x++;
div.innerHTML = '<svg><circle r="' + x + '" cx="' + x +'" cy="' + x + '" fill="red" /></svg>';
if (x < 100)
{
setTimeout(function() {
Update(div);
}, 100);
}
console.log(div.innerHTML);
}
HTML:
<body>
<button type="button" onclick="onClick();" >Display red circle</button>
<div id="svg">
</div>
</body>
Wrapping the SVG in a container and then updating the content of the container seems to work.

add image in the svg

INDEX.HTML
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
width: 960px;
padding-top: 40px;
margin: auto;
position: relative;
}
svg {
width: 100%;
max-height: 400px;
}
</style>
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script type='text/javascript'>
window.addEventListener('load', function () {
d3.xml('iPhone.svg', 'image/svg+xml', function (error, data) {
d3.select('body').node().appendChild(data.documentElement);
var svg = d3.select('svg');
var appScreen = svg.select('#ScreenBackground');
var screenWidth = +appScreen.attr('width'),
screenHeight = +appScreen.attr('height');
var appButton = svg.select('#AppButton')
.on('mouseenter', function () {
appButton.style('fill', '#AB69C6');
})
.on('mouseleave', function () {
appButton.style('fill', '#9B59B6')
})
.on('click', function () {
var x = Math.random() * screenWidth;
var y = Math.random() * screenHeight;
appButton
.transition()
.duration(1000)
.ease('bounce')
.attr('cx', x)
.attr('cy', y);
});
});
});
</script>
iPhone.svg
<?xml version='1.0' encoding='utf-8'?>
<svg width='400px' height='800px' viewBox='0 0 400 800'
version='1.1' xmlns='http://www.w3.org/2000/svg'>
<title> SafeSignal </title>
<description>Created with Sketch (http:/ / www.bohemiancoding.com / sketch) </description>
<defs>
<!-- Define a clipping path the size of the screen -->
</defs>
<!-- iPhone frame -->
<rect id='iPhone' fill='#000000'
x='0' y='0' width='400' height='800' rx='50' ry='50'></rect>
<!-- iPhone home button -->
<circle id='HomeButton' fill='#202020'
cx='200' cy='730' r='40'></circle>
<!-- Apply the clipping path to the screen group -->
<g id='ScreenGroup' transform='translate(20, 80)'
clip-path='url(#ScreenMask)'>
<!-- Screen background -->
<rect id = "ScreenBackground" x ="214" y ="0" width ="102" height ="568" style = "pointer-events: all;" ></rect>
<!-- An interactive button in the app -->
<circle id='AppButton' fill='#9B59B6' cx='180' cy='290' r='50' style='cursor:pointer;'></circle>
</g>
</svg>
taking help from the google , i have made this SVG . now I am trying to make have background as image but i have tried all the ways but everytime i done this ya add any image I have get this error Uncaught TypeError: Cannot read property 'documentElement' of null I dont know where i am going wrong because i am new to this svg
<object type="image/svg+xml"
width="100" height="100" style="float:right"
data="http://blog.codedread.com/clipart/apple.svgz">
<span/></object>
<object id="E" type="image/svg+xml" data="http://srufaculty.sru.edu/david.dailey/svg/ovals.svg" width="320" height="240">
alt : Your browser has no SVG support. Please install Adobe SVG Viewer
plugin (for Internet Explorer) or use Firefox, Opera or Safari instead.
</object>
<!DOCTYPE html>
<html>
<head>
<title>HTML5 SVG demo</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
</head>
<body>
<h1>HTML5 SVG Demo (embed with iframe)</h1>
<p> A nice green circle that was embeded using the HTML "iframe" tag:
<iframe src="green-circle.svg"
width="64" height="64" style="border:1;"></iframe>
</p>
<p>
Tips:
<iframe src="green-circle.svg" style="float:left;margin-right:1cm;"
width="64" height="40" style="border:1;"></iframe>
</p>
</body>
</html>

How to dynamically add an element to HTML5 SVG?

I have read a few questions similar to this, but I can't get my code working properly. I want to add a SVG element when a the user click on the SVG-area.
Here is my HTML5 with SVG, it renders correctly:
<!DOCTYPE html>
<html>
<head>
<script src="jquery-1.6.2.min.js"></script>
<script src="svgdraw.js"></script>
</head>
<body>
<svg id="canvas" width="500" height="500">
<circle cx="80" cy="80" r="50" fill="blue"/>
</svg>
</body>
</html>
Here is the JavaScript that is executed on a click event:
var svgDocument = document.getElementById('canvas');
var svgns = "http://www.w3.org/2000/svg";
var shape = svgDocument.createElementNS(svgns,"circle");
shape.setAttributeNS(null, "cx", 25);
shape.setAttributeNS(null, "cy", 25);
shape.setAttributeNS(null, "r", 20);
shape.setAttributeNS(null, "fill", "green");
document.getElementById('canvas').appendChild(shape);
In Google Chrome I get an error message that createElementNS doesn't exist. But I can't get it working if I remove all NS and null either. What is the correct way to do this? Is is different for different browsers?
As far as I know createElementNS() is part of the document-variable, try:
var shape = document.createElementNS(svgns,"circle");

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