HTML Resource Cheat Sheet

Table of Contents

HTML Resource

Tutorials Online

Official Website HTML for Newbie

Download

Related

Formatting

Format

Basic Tags

Basic

Images

 
 

Links

Lists

Form/Table

Forms

Tables

Frames

Others

Styles

Meta Info

Programming

Attributes

Core

Language

Keyboard

Status 5XX

5XX:Server Error

500 Internal Server Error: A generic error message is given when no more specific message is suitable

501 Not Implemented: The server either does not recognize the request method or lacks the ability to fulfill the request

502 Bad Gateway: The server was acting as a gateway or proxy and received an invalid response from the upstream server

503 Service Unavailable:  The server is currently unavailable (overloaded or down)

504 Gateway Timeout: The server was acting as a gateway or proxy and did not receive a timely response from the upstream server

505 HTTP Version Not Supported:  The server does not support the HTTP protocol version used in the request

511 Network Authentication Required: The client needs to authenticate to gain network access

Status 1XX

1XX:Information

100 Continue: The server has received the request headers, and the client should proceed to send the request body

101 Switching Protocols: The requester has asked the server to switch protocols

103 Checkpoint: Used in the resumable requests proposal to resume aborted PUT or POST requests

Entities

Character

				
					" >>> "
& >>> &
< >>> &#60;
> >>> &#62;
@ >>> &#64;
€ >>> &#128;
• >>> &#149;
™ >>> &#153;
£ >>> &#163;
#160;
© >>> &#169

HTML Events

Events

<body>Events

  • onload
  • Script to be run when a document unloads

Form Events

  • onblur
  • onchange
  • onfocus
  • onreset
  • onselect
  • onsubmit

Image Events

  • onabort

Mouse Events

  • onclick
  • ondblclick
  • onmousedown
  • onmousemove
  • onmouseout
  • onmouseover
  • onmouseup

Status 2XX

2XX:Successful

200 OK: The request is OK (this is the standard response for successful HTTP requests)

201 Created: The request has been fulfilled, and a new resource has been created

202 Accepted: The request has been accepted for processing, but the processing has not been completed

203 Non-Authoritative Information: The request has been successfully processed but is returning information that may be from another source

204 No Content: The request has been successfully processed but is not returning any content

205 Reset Content: The request has been successfully processed, but is not returning any content, and requires that the requester reset the document view

206 Partial Content: The server is delivering only part of the resource due to a range header sent by the client

Status 4XX

4XX:Client Error

400 Bad Request: The request cannot be fulfilled due to bad syntax

401 Unauthorized: The request was a legal request, but the server is refusing to respond to it. For use when authentication is possible but has failed or not yet been provided

402 Payment Required: Reserved for future use

403 Forbidden: The request was a legal request, but the server is refusing to respond to it

404 Not Found: The requested page could not be found but may be available again in the future

405 Method Not Allowed: A request was made for a page using a request method not supported by that page

406 Not Acceptable: The server can only generate a response that is not accepted by the client

407 Proxy Authentication Required: The client must first authenticate itself with the proxy

408 Request Timeout: The server timed out waiting for the request

409 Conflict: The request could not be completed because of a conflict in the request

410 Gone: The requested page is no longer available

411 Length Required:  The “Content-Length” is not defined. The server will not accept the request without it

412 Precondition Failed: The precondition given in the request evaluated to be false by the server

413 Request Entity Too Large: The server will not accept the request, because the request entity is too large

414 Request-URI Too Long: The server will not accept the request, because the URL is too long. Occurs when you convert a POST request to a GET request with a long query information

415 Unsupported Media Type: The server will not accept the request, because the media type is not supported

416 Requested Range Not Satisfiable: The client has asked for a portion of the file, but the server cannot supply that portion

417 Expectation Failed: The server cannot meet the requirements of the expected request header field

Status 3XX

3XX:Redirection

300 Multiple Choices: A link list. The user can select a link and go to that location. Maximum five addresses

301 Moved Permanently: The requested page has moved to a new URL

302 Found: The requested page has moved temporarily to a new URL

303 See Other: The requested page can be found under a different URL

304 Not Modified: Indicates the requested page has not been modified since last requested

306 Switch Proxy: No longer used

307 Temporary Redirect: The requested page has moved temporarily to a new URL

308 Resume Incomplete: Used in the resumable requests proposal to resume aborted PUT or POST requests
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