SVG Text attribute is doubling - HTML2CANVAS

Question

Here is mycode and link to JSFiddle.

HTML

<input type="button" id="export" value="Export"/>
    <svg xmlns="http://www.w3.org/2000/svg"
    xmlns:xlink="http://www.w3.org/1999/xlink">

<text x="162" text-anchor="middle" class="highcharts-title" zindex="4" style="color:#333333;font-size:18px;font-weight:normal;text-decoration:normal;font-family:Lucida Grande,Lucida Sans Unicode, Arial, Helvetica, sans-serif;visibility:visible;fill:#333333;width:260px;" y="25">Inventory</text>
</svg>

JS

$(document).ready(function(){
        $('#export').on('click', function() {       
            html2canvas(document.body, {
                onrendered: function(canvas) {
                    document.body.appendChild(canvas);
                },
            });
        });
});

I'm trying to convert an svg to canvas image using html2canvas library. In the example I'm just appending the canvas image to the output. You can clearly see that the text is multiplied. Could anyone advice me to solve this issue.

Hope my question is clear. Thanks in advance.

Answer 1

Caused by an issue in html2canvas generating the text elements twice.

Apply this patch to fix until this pull request is incorporated in a html2canvas release:

NodeParser.prototype.getChildren = function(parentContainer) {
    return flatten([].filter.call(parentContainer.node.childNodes, renderableNode).map(function(node) {
        var container = [node.nodeType === Node.TEXT_NODE && !(node.parentNode instanceof SVGElement) ? new TextContainer(node, parentContainer) : new NodeContainer(node, parentContainer)].filter(nonIgnoredElement);
        return node.nodeType === Node.ELEMENT_NODE && container.length && node.tagName !== "TEXTAREA" ? (container[0].isElementVisible() ? container.concat(this.getChildren(container[0])) : []) : container;
    }, this));
};