:has() CSS relational pseudo-class
Select elements containing specific content. For example, `a:has(img)` selects all `<a>` elements that contain an `<img>` child.
Hashchange event
Event triggered in JavaScript when the URL's hash has changed (for example: page.html#foo to page.html#bar)
audioparammap api: has
cachestorage api: has
document api: hasfocus
document api: hasprivatetoken
document api: hasredemptionrecord
document api: hasstorageaccess
document api: hasunpartitionedcookieaccess
element api: hasattribute
element api: hasattributens
element api: hasattributes
element api: haspointercapture
eventcounts api: has
fontfaceset api: has
formdata api: has
gamepadpose api: hasorientation
gamepadpose api: hasposition
hashchangeevent api
hashchangeevent api: newurl
hashchangeevent api: oldurl
headers api: has
highlight api: has
location api: hash
midiinputmap api: has
midioutputmap api: has
navigateevent api: hashchange
navigateevent api: hasuavisualtransition
node api: haschildnodes
popstateevent api: hasuavisualtransition
pushmanager api: haspermission
sensor api: hasreading
urlpattern api: hash
urlpattern api: hasregexpgroups
url api: hash
xranchorset api: has
javascript built-in: function: [symbol.hasinstance]
javascript built-in: map: has
javascript built-in: object: hasown
javascript built-in: object: hasownproperty
javascript built-in: proxy: handler: has
javascript built-in: reflect: has
javascript built-in: regexp: hasindices
javascript built-in: set: has
javascript built-in: symbol: hasinstance
javascript built-in: weakmap: has
javascript built-in: weakset: has
grammar: hashbang (`#!`) comment syntax
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