SVGPointList: insertItemBefore() method
The insertItemBefore()
method of the SVGPointList
interface inserts a point
before another item in the list.
Syntax
js
insertItemBefore(obj, index)
Parameters
obj
-
An
SVGPoint
object containing the coordinates of the point to be inserted. index
-
The index of the item the object should be inserted before. If the index passed in is greater than the length of the list, then index will be set to the list length and the item inserted before the last item in the list.
Return value
The SVGPoint
object that was inserted.
Exceptions
NoModificationAllowedError
DOMException
-
Thrown if the list is read-only.
Examples
The following example shows an SVG which contains a <polyline>
with five coordinate pairs. A new SVGPoint
is created, and inserted before the point at index 2
.
html
<svg id="svg" viewBox="-10 -10 120 120" xmlns="http://www.w3.org/2000/svg">
<polyline
id="example"
stroke="black"
fill="none"
points="50,0 21,90 98,35 2,35 79,90" />
</svg>
js
let example = document.getElementById("example");
let svgpoint = document.getElementById("svg").createSVGPoint();
svgpoint.y = 10;
svgpoint.x = 10;
console.log(example.points.insertItemBefore(svgpoint, 2));
Specifications
Specification |
---|
Scalable Vector Graphics (SVG) 2 # __svg__SVGNameList__insertItemBefore |
Browser compatibility
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