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How to Access SVG Elements from Illustrator-Generated Files with JavaScript?

Patricia Arquette
Patricia ArquetteOriginal
2024-11-12 07:22:02518browse

How to Access SVG Elements from Illustrator-Generated Files with JavaScript?

Accessing SVG Elements with JavaScript from Illustrator-Generated SVG Files

As discussed, accessing SVG elements with JavaScript from SVG files created in Adobe Illustrator is indeed possible without utilizing third-party libraries like Raphaël or jQuery SVG.

To achieve this:

1. Load the SVG File Asynchronously:

Incorporate an HTML5 element to load the SVG file asynchronously and access its document object model (DOM).

<object data="alpha.svg" type="image/svg+xml">

2. Add Load Event Listener:

Attach a load event listener to the to execute a callback function when the SVG document finishes loading and its DOM becomes available.

<script>
    var a = document.getElementById("alphasvg");
    a.addEventListener("load",function(){
        // code here executes after SVG loads
    }, false);
</script>

3. Retrieve Inner DOM and Access Elements:

Within the load event callback, manipulate the SVG document's inner DOM by retrieving it:

var svgDoc = a.contentDocument;

Using this reference to svgDoc, you can access specific elements by their IDs using the getElementById method:

var delta = svgDoc.getElementById("delta");

4. Add Event Handlers:

Once you have access to the elements, you can attach event handlers for behaviors. For instance, to add a click handler to the 'delta' element:

delta.addEventListener("mousedown",function(){
    alert('hello world!')
}, false);

Limitations:

This technique is subject to the same-origin policy. Therefore, the SVG file must be hosted on the same domain as the HTML file to ensure access to the inner DOM.

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