In the above example, the first slider is disabled and the second slider the value is set to 50. The slider bar can be customized with different themes. The action can be prevented. So I have a slider widget that I set some values on and now I want to trigger it's change event so it can process as per normal the "slide" process of It will only create the number of handles needed to match the length of value/values. output.innerHTML = slider.value; // Display the default slider value // Update the current slider value (each time you drag the slider handle) slider.oninput = function() { To learn when the value in a slider changes, you need to register a change listener. Tip: This event is similar to the onchange event. The change event occurs when the value of the element is changed. The change event is sent to an element when its value changes. This event occurs when the value of an or