Range slider not working

I am working on the phonegap app.

I added the range slider but i can not drag the knob to set the value. it display me the default value on slider.
Please help me to make it functional

Refer to original examples on http://framework7.io/docs/range-slider.html#examples and https://github.com/framework7io/framework7/blob/master/kitchen-sink/pages/range.html