SVG:Namespace: Difference between revisions

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(→‎declare namespaces for svg and xlink: mention SVG doctype as well)
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= Declare namespaces for SVG and XLink=
#REDIRECT [http://developer.mozilla.org/en/docs/SVG:Namespaces_Crash_Course Namespaces Crash Course]
 
the namespace declaration for svg is required if you don't specify it, nothing will be rendered. the xlink namespace is required if you use <use/>, <image/>, <a/> ...
 
*the svg namespace: http://www.w3.org/2000/svg
*the xlink namespace: http://www.w3.org/1999/xlink
 
a simple SVG file may look like this:
 
<?xml version="1.0" standalone="no"?>
<svg xmlns="http://www.w3.org/2000/svg"
    xmlns:xlink="http://www.w3.org/1999/xlink">
  <title>title of drawing</title>
</svg>
 
== Declare DOCTYPE for SVG ==
 
Similarly, declaring a correct DOCTYPE for .svg files is important as well, instances have been observed where an SVG file without namespace and incorrect doctype did work in Adobe SVG, but with the namespace added it didn’t work, until the DOCTYPE was corrected as well. The doctype is supposed to be:
 
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 
This should solve the cases where the addition of the namespaces required by Mozilla breaks rendering with Adobe SVG.
 
= use namespace-aware methods in javascript=
 
when using js, make sure you use the namespace aware methods like:
 
*getElementsByTagNameNS()
*createElementNS()
*setAttributeNS()
*getAttributeNS()
*...
 
svg elements are in the svg namespace. svg attributes are in the null namespace.
for example, to dynamically create an <image> element, do it like this:
 
const svgns="http://www.w3.org/2000/svg";
const xlinkns="http://www.w3.org/1999/xlink";
var newIM=document.createElementNS(svgns,"image");
newIM.setAttributeNS(null,"width",100);
newIM.setAttributeNS(null,"height",100);
newIM.setAttributeNS(xlinkns,"href","bild2.png");

Latest revision as of 04:55, 3 December 2005

  1. REDIRECT Namespaces Crash Course
Retrieved from "https://wiki.mozilla.org/index.php?title=SVG:Namespace&oldid=20950"