Range
Basic example
Create custom <input type="range"> controls with
.form-range. The track (the background) and
thumb (the value) are both styled to appear the same across browsers. As only Firefox supports “filling”
their track from the left or right of the thumb as a means to visually indicate progress, we do not
currently support it.
Disabled Range
Add the disabled boolean attribute on an input to give it a grayed out appearance and
remove pointer events.
Min and max
Range inputs have implicit values for min and max—0 and
100, respectively. You may specify new
values for those using the min and max attributes.
Steps
By default, range inputs “snap” to integer values. To change this, you can specify a step value. In the example below, we double the number of steps by using step="0.5".