fabric js fontweight not working

Question

I am using this code to add textbox in canvas using fabric js,

var text = 'Type Text Here';
var textSample = new fabric.Textbox(text, {
    left: getCardLeft() + 100,
    top: getCardTop() + 10,
    width: 200,
    height: 20,
    fontFamily: 'Helvetica',
    fill: getColorPickerForegroundColor(),
    fontWeight: '',
    fontSize: parseInt('25'),
    originX: 'center',
    hasRotatingPoint: true,
    centerTransform: true,
});
canvas.add(textSample);

Which successfully add textbox into canvas. Now, if i try to make it bold using this command

canvas.getActiveObject().set("fontWeight", "bold");
canvas.renderAll();

Working, But when try to change it to normal,

canvas.getActiveObject().set("fontWeight", "");
canvas.getActiveObject().set("fontWeight", "100");
canvas.getActiveObject().set("fontWeight", "normal");
canvas.renderAll();

not working.

I don't know where the issue is. Am i doing anything wrong here?.

Its behaving strange You can see it here.

visit first here Then visit here

Answer 1

I just take fabric.js from here and replaced with mine, and working all.