A slider, except it's round. Pretty good for selecting angles and stuff.
$ npm i circle-slider
// Import the module at the top of your fileconst CircleSlider = ;// or ES6 style;// The id of your target element as the first argconst cs = "whatever";
All you have to do on the HTML side is to create a div with some id, which is the first parameter in the constructor of CircleSlider.
All you need is to create a div, the elements for the handle (and its container) will be created for you.
You can put anything you want inside the div, e.g. a div which displays the current angle (see the demo).
The constructor takes an optional second parameter which looks like this:
// e.g. snap to every 45 degreessnap: Number// positive directionclockwise: Boolean// which position 0 degrees isstartPos: "top"|"bottom"|"left"|"right"
I'll emphasize that
startPos changes where 0 degrees is, so if you instead want, for example, 0 to be at the top, but want the slider to start at 90 degrees, you should call
setAngle(90) (see below) after creating the slider.
const options =snap: 45clockwise: falsestartPos: "top";const cs = "id" options;
You can also write the first parameter with a #:
With or without #, there is no difference in functionality, so choose which one you prefer.
Here is the stuff you can do with CircleSlider:
// get the current angle valuecs;// set the angle manuallycs;// fires every time the slider is moved// the emitted event will give you the anglecs// fires every time the handle stops moving// can be useful to avoid heavy operations every time the// handle movescs
Note that the
sliderMove event gets triggered when using
eventemitter3, you can also use functions like
once instead of
Further reading here (
eventemitter3 uses the same API as node
I leave most styling up to you! However, there are some CSS rules that you must use in order for the handle two rotate properly and stuff. Here are some good defaults to get started with:
/*Probably best to paste this exactly as is.These CSS rules make sure that the handle rotatesproperly, so don't change anything here.*//* Also paste as is *//* the appearance of the handle, feel free to change! */