Learn the process of adding transformation to an SVG path element

I have an SVG image loaded in my HTML file and I am trying to rotate one of its path elements, but I'm having trouble figuring out how to do it. The code snippet provided below is not working as expected.

Can anyone provide guidance on how to achieve this?

Thank you

<!DOCTYPE html>
<html>
    <head>
        <title>Animate</title>
        <style>
        </style>
        <script src="../js/plugin/jquery-2.1.4.min.js"></script>
    </head>
    <body>

        <object data="images/steve/steve.svg" type="image/svg+xml" id="steve" width="100%" height="100%"></object>

        <script>
            var steve = document.getElementById("steve");

            steve.addEventListener("load", function() {


                var svgDoc = steve.contentDocument; 
                var right_arm = svgDoc.getElementById("right_arm"); 



                //right_arm.rotate(90);    // THIS DOES NOT WORK


            },false);

        </script>
    </body>

</html>
javascriptsvg

Answer №1

To rotate an element in SVG, you must add a `transform` attribute directly to the SVG element. The `rotate` function within this attribute requires an argument specifying the number of degrees for rotation.

right_arm.setAttribute('transform','rotate(45)');

In JavaScript, use the `.setAttribute(...)` method to apply transformations as directly adding attributes in HTML could lead to issues like:

<rect transform="rotate(45)" ... />

https://www.w3.org/TR/SVG/coords.html#TransformAttribute

According to SVG rules, only specific attributes are allowed for SVG elements. Refer to the list of valid attributes for the rect element here: http://www.w3.org/TR/SVG/shapes.html#RectElement.

Answer №2

SVG elements have their own unique set of behaviors when it comes to CSS and JavaScript compared to regular HTML elements. Certain CSS properties may not function the same way or at all on SVG elements.

In this specific scenario, you can apply a rotation to the right_arm element using the transform attribute. The syntax for specifying a rotation is as follows:

rotate(<a> [<x> <y>])

Here, <a> represents the angle, while <x> <y> is an optional (x,y) coordinate. For instance, rotating the right_arm by 90 degrees would be done like this:

right_arm.setAttribute("transform", "rotate(90)");

It's important to note that the transform attribute may not be supported on all SVG elements. For more detailed information about this topic, I recommend checking out this resource.

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