After some more testing I found that there are sometimes values that I was not even able to drag the slider to, so I added Math.round to the return of convertValue to fix this problem.

convertValue: function(value,axis) {

return Math.round(this.options.min[axis] + (value / (this.actualSize[axis == "x" ? "width" : "height"] - this.handleSize(null,axis))) * this.options.realMax[axis]);

}

Replying to making718:

I've been playing with the most recent version of the slider. I have found that sometimes when using the arrow keys to change the value of the slider, the handle will get stuck. I found that the convertValue function sometimes returns a number like 21.999999 instead of 22. I have fixed the problem with the arrow keys by changing these lines in the moveTo function. //Store the slider's value this.currentHandle.data("mouse").sliderValue = { x: this.convertValue(x, "x"), y: this.convertValue(y, "y") }; to //Store the slider's value this.currentHandle.data("mouse").sliderValue = { x: Math.round(this.convertValue(x, "x")), y: Math.round(this.convertValue(y, "y")) };