Last Update: 14-06-2016
HTML (HyperText Markup Language) is a markup language composed by a set of tags that organize and declare a purpose for the content of the document. These tags are keywords surrounded by angle brackets (e.g., <html>). They may include attributes (e.g., <html lang="en">) and be accom...
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Last Update: 14-06-2016
The <fieldset> and <legend> elements are used to group controls together. The <fieldset> element groups the form elements and the <legend> element provides the label (caption) for the group. The <fieldset> element includes the following attributes for configur...
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Last Update: 14-06-2016
The <progress> element creates a progress bar to show the progress of a task. This element can be used alone but it is frequently included in web forms to represent the progress of a task requested by the user. The element includes an opening and a closing tag (<progress> and &...
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Last Update: 26-05-2016
The C-style for loop was deprecated in Swift 2.2, leaving only the for in option available. From Xcode 7.3.1 you will get a warning message if you create a loop with a C-style for (e.g., for var counter = 0; counter < 5; counter++). These loops will work until Swift 3.0 is introduc...
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Last Update: 01-06-2016
Block elements like <div>, <section> and <aside> generate boxes that we can use to organize the document's content. The styles assigned by browsers to block elements position the elements one per line, but we can use CSS properties to change their sizes and...
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Last Update: 14-06-2016
The <iframe> element loads another document inside the current document. The element includes an opening and a closing tag (<iframe> and </iframe>) and several attributes for configuration.   src - This attribute defines the URL of the document to be loaded insi...
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Last Update: 10-06-2016
The <th> element is used instead of <td> to define header cells. If you want to add headers to every column on the table, you have to include a new row at the top with <th> elements representing every cell, as in the following example.   <!DOCTYPE html> <html lan...
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Last Update: 08-06-2016
The <img> element loads and shows an image in the document. This is a single tag element but includes multiple attributes to select and configure the image to be shown. The following are the most frequently used.   src - This attribute specified the URL of the image to be l...
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Last Update: 02-06-2016
As well as the <div> element, the <main> element creates a division in the document,  but it is used to define the main content of the document. By default, the <main> element is defined as a block element, which means that it will be positioned in a new line and have dim...
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Last Update: 26-05-2016
The ++ and -- operators were deprecated in Swift 2.2. From Xcode 7.3.1 you will get a warning message if you incorporate these operators in your code. The operators will work until Swift 3.0 is introduced, meanwhile Xcode will suggest you to use the += and -= operators instead. O...
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