EventTarget.addEventListener()

The modern standard API for adding DOM event handlers. Introduced in the DOM Level 2 Events spec. Also implies support for `removeEventListener`, the [capture phase](https://dom.spec.whatwg.org/#dom-event-capturing_phase) of DOM event dispatch, as well as the `stopPropagation()` and `preventDefault()` event methods.

cache api: add

cache api: addall

canvasgradient api: addcolorstop

contentindex api: add

cssnumericvalue api: add

customstateset api: add

datatransfer api: addelement

domtokenlist api: add

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility)

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.capture` parameter

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.once` parameter

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.passive` parameter

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.passive` parameter defaults to `true` for `touchstart` and `touchmove` events

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.passive` parameter defaults to `true` for `wheel` and `mousewheel` events

eventtarget api: addeventlistener: form with `options` object supported (third parameter can be either options or a `boolean`, for backwards compatibility): `options.signal` parameter

eventtarget api: addeventlistener: `usecapture` parameter is optional

external api: addsearchprovider

fontfaceset api: add

highlight api: add

htmlmediaelement api: addtexttrack

htmlselectelement api: add

idbobjectstore api: add

installevent api: addroutes

mediasource api: addsourcebuffer

mediastream api: addtrack

mlgraphbuilder api: add

mutationrecord api: addednodes

path2d api: addpath

rtcicecandidate api: address

selection api: addrange

selection api: addrange: can add multiple ranges to the selection

subscriber api: addteardown

texttrack api: addcue

worklet api: addmodule

css property: mask: add

html element: address

javascript built-in: atomics: add

javascript built-in: set: add

javascript built-in: temporal api: duration: add

javascript built-in: temporal api: instant: add

javascript built-in: temporal api: plaindatetime: add

javascript built-in: temporal api: plaindate: add

javascript built-in: temporal api: plaintime: add

javascript built-in: temporal api: plainyearmonth: add

javascript built-in: temporal api: zoneddatetime: add

javascript built-in: weakset: add

javascript operator: addition (`+`)

javascript operator: addition assignment (`x += y`)