Animate SVG Path Via Javascript

I want to animate svg path by button click, but it's not working.

Solution 1:

See http://jsfiddle.net/c5mzn6d0/4/

Add

animate.beginElement();

after you append the animation:

var btn = document.getElementById('btn');
btn.onclick = function () {
    var path = document.getElementById('path1');
    var animate = document.createElementNS("http://www.w3.org/2000/svg","animate");
    animate.setAttribute('attributeName', 'd');
    animate.setAttribute('dur', '1s');
    animate.setAttribute('fill', 'freeze');
    animate.setAttribute('values', 'M 10 10  L 40 20  20 40; M 30 10  L 10 40  40 30');
    path.appendChild(animate);
    animate.beginElement();
}

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