Set Id Attribute On A Snap.svg Graphic

I'm using Snap.svg API and I have three graphics that I need to select in my CSS for styling purposes. Thus, to distinguish between them, I need to give them an ID or class name. T

Solution 1:

Update

I raised an issue on GitHub and it looks like this will be fixed in the next release. For now, on the development branch, you can use Element.attr:

var draw = Snap(100, 75);
draw.attr({ id: 'graphic_1' });

I'm leaving the original answer below because:

1. at time of writing, this doesn't work in the master (release) version; and
2. the technique described for directly accessing the underlying DOM node might be useful to others in future, or those using an older version of Snap.svg.

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It's not documented, but internally Snap.svg stores the DOM node in a property called node. Thus, you can set the ID of the canvas like so:

draw.node.id = 'graphic_1';

Alternatively, if you would prefer to avoid undocumented techniques, you could create an element with the ID that you want first and use that directly:

<svg id="graphic_1" xmlns="http://www.w3.org/2000/svg" version="1.1" width="100" height="75"></svg>

var draw = Snap("#graphic_1");

Solution 2:

With Snap version 0.2.0 the .attr() method will work as expected,

var draw = Snap(100, 75);
draw.attr({id: "graphic_1"});

but with Snap version 0.1.0 I had modify snap.svg.js (approx. line 4338) to allow this to work.

var availableAttributes = {
    svg: {
        id : "",    
    },