Overview / Web Technology
Web technology reference for developers
HTML
Structure of content on the web
CSS
Code used to describe document style
JavaScript
General-purpose scripting language
HTTP
Protocol for transmitting web resources
Web APIs
Interfaces for building web applications
Web Extensions
Developing extensions for web browsers
Accessibility
Build web projects usable for all
Web Technology
Web technology reference for developers
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En este artÃculoReason: CORS disabled
Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz'
Reason: CORS header 'Access-Control-Allow-Origin' missing
Reason: CORS header 'Origin' cannot be added
Reason: CORS preflight channel did not succeed
Reason: CORS request did not succeed
Reason: CORS request external redirect not allowed
Reason: CORS request not HTTP
Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*'
Reason: Did not find method in CORS header 'Access-Control-Allow-Methods'
Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials'
Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers'
Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods'
Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel
Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed
Accept
Accept-CH
Accept-Encoding
Accept-Language
Accept-Patch
Accept-Post
Accept-Ranges
Access-Control-Allow-Credentials
Access-Control-Allow-Headers
Access-Control-Allow-Methods
Access-Control-Allow-Origin
Access-Control-Expose-Headers
Access-Control-Max-Age
Access-Control-Request-Headers
Access-Control-Request-Method
Age
Allow
Alt-Svc
Alt-Used
Attribution-Reporting-Eligible
ExperimentalAttribution-Reporting-Register-Source
ExperimentalAttribution-Reporting-Register-Trigger
ExperimentalAuthorization
Available-Dictionary
ExperimentalCache-Control
Clear-Site-Data
Connection
SubtleCrypto.digest()
Content-Disposition
Content-DPR
No estándar ObsoletoContent-Encoding
Content-Language
Content-Length
Content-Location
Content-Range
Content-Security-Policy
Content-Security-Policy-Report-Only
Content-Type
Cookie
Critical-CH
ExperimentalCross-Origin-Embedder-Policy
Cross-Origin-Opener-Policy
Cross-Origin-Resource-Policy
Date
Device-Memory
Dictionary-ID
ExperimentalDNT
No estándar ObsoletoDownlink
ExperimentalDPR
No estándar ObsoletoEarly-Data
ExperimentalECT
ExperimentalETag
Expect
Expect-CT
ObsoletoExpires
Forwarded
From
Host
If-Match
If-Modified-Since
If-None-Match
If-Range
If-Unmodified-Since
Integrity-Policy
Integrity-Policy-Report-Only
Keep-Alive
Last-Modified
Link
Location
Max-Forwards
NEL
ExperimentalNo-Vary-Search
ExperimentalObserve-Browsing-Topics
Experimental No estándarOrigin
Origin-Agent-Cluster
Permissions-Policy
ExperimentalPragma
ObsoletoPrefer
Preference-Applied
Priority
Proxy-Authenticate
Proxy-Authorization
Range
Referer
Referrer-Policy
Refresh
Report-To
No estándar ObsoletoReporting-Endpoints
Repr-Digest
Retry-After
RTT
ExperimentalSave-Data
ExperimentalSec-Browsing-Topics
Experimental No estándarSec-CH-Prefers-Color-Scheme
ExperimentalSec-CH-Prefers-Reduced-Motion
ExperimentalSec-CH-Prefers-Reduced-Transparency
ExperimentalSec-CH-UA
ExperimentalSec-CH-UA-Arch
ExperimentalSec-CH-UA-Bitness
ExperimentalSec-CH-UA-Form-Factors
ExperimentalSec-CH-UA-Full-Version
ObsoletoSec-CH-UA-Full-Version-List
ExperimentalSec-CH-UA-Mobile
ExperimentalSec-CH-UA-Model
ExperimentalSec-CH-UA-Platform
ExperimentalSec-CH-UA-Platform-Version
ExperimentalSec-CH-UA-WoW64
ExperimentalSec-Fetch-Dest
Sec-Fetch-Mode
Sec-Fetch-Site
Sec-Fetch-User
Sec-GPC
ExperimentalSec-Purpose
Sec-Speculation-Tags
ExperimentalSec-WebSocket-Accept
Sec-WebSocket-Extensions
Sec-WebSocket-Key
Sec-WebSocket-Protocol
Sec-WebSocket-Version
Server
Server-Timing
Service-Worker
Service-Worker-Allowed
Service-Worker-Navigation-Preload
Set-Cookie
Set-Login
SourceMap
Speculation-Rules
ExperimentalStrict-Transport-Security
Supports-Loading-Mode
ExperimentalTE
Timing-Allow-Origin
Tk
No estándar ObsoletoTrailer
Transfer-Encoding
Upgrade
Upgrade-Insecure-Requests
Use-As-Dictionary
ExperimentalUser-Agent
Vary
Via
Viewport-Width
No estándar ObsoletoWant-Content-Digest
Want-Repr-Digest
Warning
ObsoletoWidth
No estándar ObsoletoWWW-Authenticate
X-Content-Type-Options
X-DNS-Prefetch-Control
No estándarX-Forwarded-For
No estándarX-Forwarded-Host
No estándarX-Forwarded-Proto
No estándarX-Frame-Options
X-Permitted-Cross-Domain-Policies
No estándarX-Powered-By
No estándarX-Robots-Tag
No estándarX-XSS-Protection
No estándar Obsoleto100 Continue
101 Switching Protocols
102 Processing
103 Early Hints
200 OK
201 Created
202 Aceptado
203 Non-Authoritative Information
204 No Content
205 Reset Content
206 Partial Content
207 Multi-Status
208 Already Reported
226 IM Used
300 Multiple Choices
301 Moved Permanently
302 Found
303 See Other
304 Not Modified
307 Temporary Redirect
308 Permanent Redirect
400 Petición mala
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict
410 Gone
411 Length Required
412 Precondition Failed
413 Content Too Large
414 URI Too Long
415 Unsupported Media Type
416 Range Not Satisfiable
417 Expectation Failed
418 Soy una tetera
421 Misdirected Request
422 Unprocessable Content
423 Locked
424 Failed Dependency
425 Too Early
426 Upgrade Required
428 Precondition Required
429 Too Many Requests
431 Request Header Fields Too Large
451 Unavailable For Legal Reasons
500 Internal Server Error
501 Not Implemented
502 Puerta de enlace no válida
503 Servicio No Disponible
504 Gateway Timeout
505 HTTP Version Not Supported
506 Variant Also Negotiates
507 Insufficient Storage
508 Loop Detected
510 Not Extended
511 Network Authentication Required
base-uri
block-all-mixed-content
Obsoletochild-src
connect-src
default-src
fenced-frame-src
Experimentalfont-src
form-action
frame-ancestors
frame-src
img-src
manifest-src
media-src
object-src
prefetch-src
No estándar Obsoletoreport-to
report-uri
Obsoletorequire-trusted-types-for
sandbox
script-src
script-src-attr
script-src-elem
style-src
style-src-attr
style-src-elem
trusted-types
upgrade-insecure-requests
worker-src
accelerometer
Experimentalambient-light-sensor
Experimentalattribution-reporting
Experimentalautoplay
Experimentalbluetooth
Experimentalbrowsing-topics
Experimental No estándarcamera
Experimentalcaptured-surface-control
Experimentalcompute-pressure
Experimentalcross-origin-isolated
Experimentaldeferred-fetch
Experimentaldeferred-fetch-minimal
Experimentaldisplay-capture
Experimentalencrypted-media
Experimentalfullscreen
Experimentalgamepad
Experimentalgeolocation
Experimentalgyroscope
Experimentalhid
Experimentalidentity-credentials-get
Experimentalidle-detection
Experimentallanguage-detector
Experimentallocal-fonts
Experimentalmagnetometer
Experimentalmicrophone
Experimentalmidi
Experimentalotp-credentials
Experimentalpayment
Experimentalpicture-in-picture
Experimentalpublickey-credentials-create
Experimentalpublickey-credentials-get
Experimentalscreen-wake-lock
Experimentalserial
Experimentalspeaker-selection
Experimentalstorage-access
Experimentalsummarizer
Experimentaltranslator
Experimentalusb
Experimentalweb-share
Experimentalwindow-management
Experimentalxr-spatial-tracking
ExperimentalBaseline Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since July 2015.
El método HTTP GET
solicita una representación del recurso especificado. Las solicitudes que usan GET
solo deben usarse para recuperar datos (no deben incluir datos).
GET /index.htmlEspecificaciones Specification HTTP Semantics
.
This page was last modified on 7 jul 2025 by MDN contributors.
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