Monday, March 28, 2011

HTML Cheatsheet


  1. Basic Tags
  2. Body Attributes
  3. Text Tags
  4. Links
  5. Formatting
  6. Tables
  7. Table Attributes
  8. Frames
  9. Frames Attributes
  10. Forms

Basic Tags

<html></html> Creates an HTML document
<head></head> Sets off the title and other information that isn’t displayed on the web page itself
<body></body> Sets off the visible portion of the document

Body Attributes

<body bgcolor="pink"> Sets the background color, using name or hex value
<body text="black"> Sets the text color, using name or hex value
<body link="blue"> Sets the color of links, using name or hex value
<body vlink="#ff0000"> Sets the color of followed links, using name or hex value
<body alink="#00ff00"> Sets the color of links on click
<body ondragstart="return false" onselectstart="return false"> Disallows text selection with the mouse and keyboard

Text Tags

<pre></pre> Creates preformatted text
<hl></hl> Creates the largest headline
<h6></h6> Creates the smallest headline
<b></b> Creates bold text
<i></i> Creates italic text
<tt></tt> Creates teletype, or typewriter-style text
<cite></cite> Creates a citation, usually italic
<em></em> Emphasizes a word (with italic or bold)
<strong></strong> Emphasizes a word (with italic or bold)
<font size="3"></font> Sets size of font, from 1 to 7
<font color="green"></font> Sets font color, using name or hex value


<a href="URL"></a> Creates a hyperlink
<a href="mailto:EMAIL"></a> Creates a mailto link
<a href="URL"><img src="URL"> </a> Creates an image/link
<a name="NAME"></a> Creates a target location within a document
<a href="#NAME"></a> Links to that target location from elsewhere in the document


<p></p> Creates a new paragraph
<p align="left"> Aligns a paragraph to the left (default), right, or center.
<br> Inserts a line break
<blockquote></blockquote> Indents text from both sides
<dl></dl> Creates a definition list
<dt> Precedes each definition term
<dd> Precedes each definition
<ol></ol> Creates a numbered list
<ul></ul> Creates a bulleted list
<li></li> Precedes each list item, and adds a number or symbol depending upon the type of list selected
<div align="left"> A generic tag used to format large blocks of HTML, also used for stylesheets
<img src="name"> Adds an image
<img src="name" align="left"> Aligns an image: left, right, center; bottom, top, middle
<img src="name" border="1"> Sets size of border around an image
<hr /> Inserts a horizontal rule
<hr size="3" /> Sets size (height) of rule
<hr width="80%" /> Sets width of rule, in percentage or absolute value
<hr noshade /> Creates a rule without a shadow


<table></table> Creates a table
<tr></tr> Sets off each row in a table
<td></td> Sets off each cell in a row
<th></th> Sets off the table header (a normal cell with bold, centered text)

Table Attributes

<table border="1"> Sets width of border around table cells
<table cellspacing="1"> Sets amount of space between table cells
<table cellpadding="1"> Sets amount of space between a cell’s border and its contents
<table width="500" or "80%"> Sets width of table, in pixels or as a percentage of document width
<tr align="left"> or <td align="left"> Sets alignment for cell(s) (left, center, or right)
<tr valign="top"> or <td valign="top"> Sets vertical alignment for cell(s) (top, middle, or bottom)
<td colspan="2"> Sets number of columns a cell should span (default=1)
<td rowspan="4"> Sets number of rows a cell should span (default=1)
<td nowrap> Prevents the lines within a cell from being broken to fit


<frameset></frameset> Replaces the <body> tag in a frames document; can also be nested in other framesets
<frameset rows="value,value"> Defines the rows within a frameset, using number in pixels, or percentage of width
<frameset cols="value,value"> Defines the columns within a frameset, using number in pixels, or percentage of width
<frame> Defines a single frame — or region — within a frameset
<noframes></noframes> Defines what will appear on browsers that don’t support frames

Frames Attributes

<frame src="URL"> Specifies which HTML document should be displayed
<frame name="name"> Names the frame, or region, so it may be targeted by other frames
<frame marginwidth="value"> Defines the left and right margins for the frame; must be equal to or greater than 1
<frame marginheight="value"> Defines the top and bottom margins for the frame; must be equal to or greater than 1
<frame scrolling="value"> Sets whether the frame has a scrollbar; value may equal “yes,” “no,” or “auto.” The default, as in ordinary documents, is auto.
<frame noresize="noresize"> Prevents the user from resizing a frame


For functional forms, you’ll have to run a script. The HTML just creates the appearance of a form.
<form></form> Creates all forms
<select multiple name="NAME" size=?></select> Creates a scrolling menu. Size sets the number of menu items visible before you need to scroll.
<option> Sets off each menu item
<select name="NAME"></select> Creates a pulldown menu
<option> Sets off each menu item
<textarea name="NAME" cols=40 rows=8></textarea name> Creates a text box area. Columns set the width; rows set the height.
<input type="checkbox" name="NAME"> Creates a checkbox. Text follows tag.
<input type="radio" name="NAME" value="x"> Creates a radio button. Text follows tag
<input type="text" name="NAME" size=20> Creates a one-line text area. Size sets length, in characters.
<input type="submit" value="NAME"> Creates a Submit button
<button type="submit">Submit</button> Creates an actual button that is clicked
<input type="image" border=0 name="NAME" src="name.gif"> Creates a Submit button using an image

<input type="reset"> Creates a Reset button

Thursday, March 17, 2011

[PHP, Javascript] Detecting User Time Zone of a user

var now = new Date();
var later = new Date();
// Set time for how long the cookie should be saved
later.setTime(now.getTime() + 365 * 24 * 60 * 60 * 1000);
// Set cookie for the time zone offset in minutes
setCookie("time_zone_offset", now.getTimezoneOffset(), later, "/");
// Create two new dates
var d1 = new Date();
var d2 = new Date();
// Date one is set to January 1st of this year
// Guaranteed not to be in DST for northern hemisphere,
// and guaranteed to be in DST for southern hemisphere
// (If DST exists on client PC)
// Date two is set to July 1st of this year
// Guaranteed to be in DST for northern hemisphere,
// and guaranteed not to be in DST for southern hemisphere
// (If DST exists on client PC)
// If time zone offsets match, no DST exists for this time zone
setCookie("time_zone_dst", "0″, later, "/");
// DST exists for this time zone – check if it is currently active
else {
// Find out if we are on northern or southern hemisphere
// Hemisphere is positive for northern, and negative for southern
var hemisphere = parseInt(d1.getTimezoneOffset())-parseInt(d2.getTimezoneOffset());
// Current date is still before or after DST, not containing DST
if((hemisphere>0 && parseInt(d1.getTimezoneOffset())==parseInt(now.getTimezoneOffset())) ||
(hemisphere<0 && parseInt(d2.getTimezoneOffset())==parseInt(now.getTimezoneOffset()))) { setCookie("time_zone_dst", "0″, later, "/"); } // DST is active right now with the current date else { setCookie("time_zone_dst", "1″, later, "/"); } }