HTML cơ bản

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  • HTML là thành phần cơ bản nhất để xây dựng lên trang web. Cho dù trang web của bạn có được thiết kế bằng PHP, ASP hay CGI, nhưng nếu muốn hiển thị nội dung lên trình duyệt. Bao giờ output cuối cùng vẫn sẽ là HTML, đây chính là định dạng mà trình duyệt web của bạn có thể đọc được và hiển thị nội dung theo nó.

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  • Tài liệu tham khảo dành cho giáo viên, sinh viên cao đẳng, đại học chuyên ngành công nghệ thông tin.File HTML có thể được tạo sử dụng 1 trình soạn thảo văn bản hoặc 1 trình soạn thảo HTML WYSIWYG (What You See Is What You Get). Client-side scripting (Javascript) là ngôn ngữ lập trình chạy trên trình duyệt. Javascript dùng để thay đổi và định dạng lại nội dung trang web sau khi trình duyệt đã hiển thị......

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  • 194 Chapter 4: Using HTML Figure 4.13: Editing a document in Google Docs’ word processor Note that there is a menu item, just above Edit HTML, for editing the CSS. We will make use of that shortly. Figure 4.14 shows the HTML editing window into which the HTML code from Example 2.7 in Chapter 2 has been pasted. Figure 4.14: The HTML editing mode in Google Docs’ word processor From the Library of Wow! eBook Google Docs 195 After clicking the Update button to save our input, we can choose the Edit CSS option from the Edit menu.

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  • 44 Chapter 2: The HTML Language element occupies the full width of its container minus whatever is needed for the element’s margins, borders, and the padding of the containing element. Block elements also have a float property: They are allowed to float alongside other elements if there is sufficient room. The float property can take the values left, right, or none, which is the default. left means that the element adheres to the left margin of the containing element and that other HTML elements following the floated element wrap around it on the right. right does the opposite.

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  • 94 Chapter 2: The HTML Language Example 2.23: HTML code for image scaling Example 2.23 Wide Style Figure 2.23: A scaled-up image Imagemaps are an extension to the concept of document linking. An imagemap is an ordinary image upon which a set of subareas have been defined, each of which is a hyperlink to a different URL. An image becomes imagemapped when the usemap attribute is added to the image element with a value that matches the name or id attribute value of a map element placed elsewhere in the document. The map element contains a set...

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  • 124 Chapter 3: Elements of Style input[type="text"] { background-color: #ffff99; } input elements exist within interactive forms (see Chapter 2, “The HTML Language”) and come in a variety of types, including checkboxes, radio buttons, and text fields. The preceding CSS statement provides a light yellow background color to input text fields like this: Pseudo-Classes and Pseudo-Elements Pseudo-classes extend the capability of CSS statements to select HTML elements based on certain states or circumstances.

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  • 54 Chapter 2: The HTML Language or height that is a percentage of what is available to the element. Example 2.8 shows a floated table with a width attribute. The tr element defines a table row, and the th and td elements define table cells. Tables are discussed in more detail later in this chapter. Example 2.8: An HTML table with width and float attributes Example 2.8 body { padding: 30px; line-height: 1.5em; } td { text-align: right; padding: 5px; } th { text-align: left; padding: 5px; } Final Exam Results PointsGrade Larry86B+ Heidi91A The...

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  • 184 Chapter 4: Using HTML Figure 4.5: The Element Inspector in Google Chrome As shown in Figure 4.5, the Element Inspector has many powerful features, including the graphic display of an element’s box properties. It provides a nicely formatted listing of the HTML source code and the CSS associated with each document element. It is also interactive, changing the displayed properties and values as you mouse over the various page elements.

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  • 74 Chapter 2: The HTML Language content can be placed in a section element without having to reduce all the headings by one level. Remember, there should be only one level-one heading on a page. The exception to this rule is when a page is composed of multiple sections. In that case, each section is allowed to retain the level-one heading it would have when published on its own. Although a section element may contain other sections, a section’s parent element should only be another section or the body element. It would be incorrect to have a section inside a division. Also...

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  • 154 Chapter 3: Elements of Style M A r G i N S A N d PA d d i N G Most HTML elements are rendered with some amount of space between them. For elements without a border, this space is composed of margin and padding on each of the element’s four sides. For elements with a border, the margin is the amount of space on the outside of the borders, and the padding is the amount of space on the inside of the border. Both the margin and padding properties can take any size value, including a percentage value and the...

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  • 64 Chapter 2: The HTML Language Example 2.12: CSS styles for paragraphs, block quotes, and address blocks (continued) My associate thought that the quote originated with the designer, Aldo Gucci. I thought it came from Benjamin Franklin. If you have a direct reference source, please contact me at: Author Dent Figure 2.12: Styling block quotes and address blocks with CSS The break element,
    , is used in the address block in Example 2.12, where an explicit line break is needed in the text content.

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  • 84 Chapter 2: The HTML Language Example 2.21: A table with spanned rows and columns (continued) Venus 108,200,000.72225 days243 days Earth 149,600,0001.0365 days24 hrs Mars 227,900,0001.5687 days24.6 hrs Figure 2.21 shows how the code in Example 2.21 appears in a browser. Figure 2.21: A table with spanned rows and columns number of cells in a row or column. This generally yields unpredictable results. Initially a web designer’s best friend, tables have fallen out of favor recently because robots and editing software have difficulty understanding them due to their complexity.

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  • 104 Chapter 2: The HTML Language for instance. Radio buttons are controls that work such that one and only one button is “on” at any time. When you click a different radio button, the button that was on goes “off,” and the button you just clicked becomes the “on” button. Radio buttons are created by input elements with the type attribute set to "radio". A radio button is a member of a set if it has the same value for its name attribute as other radio buttons in the same set.5 For example: Male Female Other The value attribute supplies the value...

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  • 204 Chapter 4: Using HTML solicitations—come from and what tools are used to create them. The answer is: from email marketing services.3 Constant Contact is one of the more popular email marketing services. A Constant Contact customer creates and maintains a database of email recipients with the service and composes formatted emails using Constant Contact’s web-based editor and online templates. Constant Contact charges a monthly fee for its service based on the number of recipient email addresses. Constant Contact’s approach is to build an email as a series of sections or blocks.

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  • 164 Chapter 3: Elements of Style Example 3.17: HTML and CSS for displaying ordered list style types (continued) style="list-style-type: style="list-style-type: style="list-style-type: style="list-style-type: style="list-style-type: style="list-style-type: style="list-style-type: style="list-style-type: decimal;" decimal-leading-zero;" lower-roman;" upper-roman;" lower-alpha;" upper-alpha;" lower-greek;" armenian;" Figure 3.17: An ordered list showing eight different style types There is order even in unordered lists.

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  • Bài giảng Ngôn ngữ HTML do Đỗ Hiệp Thuận biên soạn cung cấp cho người đọc các kiến thức: Giới thiệu HTML, thành phần của HTML, thẻ HTML cơ bản, thẻ HTML nâng cao. Mời các bạn cùng tham khảo nội dung chi tiết.

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  • 314 src attribute src attribute, 90 statements (CSS). See CSS (Cascading Style Sheets) states, 88-89 static content, 212 static positioning, 167 element, 48, 278 element, 48, 271 strong emphasis, 258 element, 28, 255, 268 style attribute, 51 style sheets.

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  • Giới thiệu về web, vài thuật ngữ cần biết và những thứ nên biết về web, hướng dẫn thiết lập hosting và domain, giới thiệu các thẻ HTML cơ bản, viết 1 trang web đơn giản Up file lên hosting sử dụng File Manager của hosting, sử dụng FTP bằng phần mềm FileZilla,... là những nội dung chính trong bài báo cáo với chuyên đề "Web cơ bản". Đây là tài liệu tham khảo hữu ích cho các bạn đang học chuyên ngành Công nghệ thông tin.

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  • Một file có định dạng HTML là gì? HTML là chữ viết tắt của Hyper Text Markup Language (Ngôn ngữ hiển thị siêu văn bản). Một file HTML là một file text bao gồm những tag nhỏ. Những tag hiển thị nói cho trình duyệt biết nó phải hiển thị trang đó như thế nào. Một file HTML phải có phần mở rộng là .htm hoặc .html. Một file HTML có thể được tạo bởi một trình soạn thảo đơn giản.

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