Document.execCommand()

Allows running commands to manipulate the contents of an editable region in a document switched to designMode

Resource Hints: modulepreload

Using `<link rel="modulepreload">`, browsers can be informed to prefetch module scripts without having to execute them, allowing fine-grained control over when and how module resources are loaded.

Resource Hints: preload

Using `<link rel="preload">`, browsers can be informed to prefetch resources without having to execute them, allowing fine-grained control over when and how resources are loaded. Only the following `as` values are supported: fetch, image, font, script, style, track.

Promise.prototype.finally

When the promise is settled, whether fulfilled or rejected, the specified callback function is executed.

requestIdleCallback

API allowing the execution of JavaScript to be queued to run in idle browser time, either at the end of a frame or when the user is inactive. Also covers support for `cancelIdleCallback`. The API has similarities with `requestAnimationFrame`.

document api: `afterscriptexecute` event

document api: `beforescriptexecute` event

document api: execcommand

document api: execcommand: `copy` command

document api: execcommand: `cut` command

document api: execcommand: `defaultparagraphseparator` command

document api: execcommand: `insertbronreturn` command

element api: `afterscriptexecute` event

element api: `beforescriptexecute` event

gpurenderpassencoder api: executebundles

performancescripttiming api: executionstart

urlpattern api: exec

headers http header: clear-site-data: `"executioncontexts"`

headers http header: content-security-policy: script-src: source expression allowing webassembly execution

headers http header: permissions-policy: execution-while-not-rendered

headers http header: permissions-policy: execution-while-out-of-viewport

javascript built-in: regexp: exec