javascript - Canvas KineticJS - re-draw something when click button -


i using kineticjs library. created line (http://jsfiddle.net/zp364/)

var redline = new kinetic.line({     points: [973, 570, 340, 423, 450, 60, 500, 20],     stroke: 'red',     strokewidth: 15,     linecap: 'round',     linejoin: 'round',     draggable: true });

when click change button want line has change this. thanks

document.getelementbyid('change').addeventlistener('click', function() {         redline.point = [600, 400, 300, 100, 700, 80, 200, 30]; // want re-draw line          redline.stroke = 'blue'; // , change color         layer.draw(); }, false);

not redline.point...use redline.setpoints(newpointsarray)

redline.setpoints([600, 400, 300, 100, 700, 80, 200, 30]);

check here kineticjs tutorials: http://www.html5canvastutorials.com/kineticjs/html5-canvas-events-tutorials-introduction-with-kineticjs/

and check here kineticjs documentation: http://kineticjs.com/docs/symbols/kinetic.line.php#setpoints


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