udemy html css javascript

into a larger number ending with three digits .) The final number list corresponding to the selector can easily determine that a higher number is superior to a lower number. The following is a list of feature-specific delimiters: # Id1 {XXX}/* A = 1 B = 0 C = 0 -->Feature = 100 */Ul ul Li. Red {XXX}/* A = 0 B = 1 c = 3 -->Feature = 013 */Li. Red {XXX}/* A = 0 B = 1 c = 1 -->Feature = 011 */Li {XXX}/* A = 0 B = 0 C = 1 -->Feature = 001 */ 5. Save the file encoding format It is best to unif

One.1. General knowledge;1. HTML is the carrier of Web content. The content is the information that the Web creator puts on the page to let the user browse, can contain text, picture, video and so on. 2. CSS style is performance. Just like a web coat. For example, the title font, color changes, or for the title to add background pictures, borders and so on. All these things that change the appearance of the

Web beginners. Since DW can be used directly to achieve what you see is what you get, why should we learn HTML and other languages to code a line? Web beginners. Since DW can be used directly to achieve what you see is what you get, why should we learn HTML and other languages to code a line? Reply content: Yes. Using HTML and

much to XML, Because XML can completely replace HTML, but it is not time yet, in this way, XHTML is generated, and XHTML is accompanied by the birth of CSS. Where is XHTML better than HTML? 1. The DTD must be declared at the beginning of the XHTML file.2. You need to add a namespace for your 3. All attributes of tags and tags must be in lower case, and the

It has been engaged in. Net background development for a long time, interspersed with foreground development. At present, the development skills constitute about 35% frontend and 65% background. Gradually I found myself more interested in front-end web development (not catching a cold with the business logic of pulling East and West in the background ..., In addition, the previous background development has been suppressing my creativity) and decided to start systematically learning the skills r

HTML/CSS basics and htmlcss Basics HTML: HyperText Markup Language (HyperText Markup Language). Unlike the programming Language, HyperText Markup Language only recommends the browser to display webpage content in any way or structure. It is the basic architecture of a webpage. CSS: Cascading Style Sheet is a stacked St

4. What are the inline elements? What are the block-level elements? CSS box model?Block-level elements: div p H1 H2 H3 h4 form ULInline elements: A b br i span input SelectCSS box model: Content, Border, margin,padding7. What are the three layers of the front-end page, and what are the roles?Structure Layer Html Presentation layer CSS behavior Layer JS 10. How to

you must use CSS expressions, be sure to remember that they are counted thousands of times and may have an impact on the performance of your pages.3. Using external JavaScript and CSSMany performance rules are about how to handle external files. However, before you take these steps you may ask a more basic question: should JavaScript and

framework can not break the ring structure. And for structure and efficiency my point of view is that "having a reasonable structure is the fundamental motivation for your web standardization", and that the web is the bearer of information, and there is no reason to compromise a reasonable structure for visual effects. Web standards to grasp a few points: Use structured, semantically labeledUsing CSS to isolate performance elements in (X)

Mission Purpose Deepen the combat capability of HTML,CSS by implementing a more complex page Reuse and optimization of practice code Task description Design artwork design by HTML and CSS psd file (click to download), effect such as (click to open) The entire page content is fixed, but th

browsers, which allows you to easily rearrange elements on the screen, as described in CSS3 flexible box Layout explained, the following is a simple CSS style reference: . Parent {Display:flex;Flex-flow:column; /* Display items in the list/*}. Children {order:1; /* Change the order of elements * *} Another method is similar to the above, but it needs to be used in JavaScript I'm not going to introduce it

specify a class for p: Then CSS is designed like this:# Container {min-width: 600px; width: expression (document. body. clientWidth The first min-width is normal, but the width of line 2nd uses Javascript, which is recognized only by IE, which will make your HTML document not formal. It actually achieves the minimum width through

}ElementhasLayoutAlwaystrue, Such as demo8. For details about haslayout, refer to tracing ing Internet Explorer "haslayout" Overview and on having layout. It can be seen from the above that IE achieves the transparency of HTML elements so messy, there are multiple ways to make the elements transparent on IE for backward compatibility and their own private attributes, for example, demo1 to demo8 In the CSS

things and want to clearly describe them, we have to repeat a lot of information? The same is true for the page language. In this case, the page language is messy and difficult to understand. By integrating the language that controls the display effect into CSS, we can not only ensure the simplicity of the main part of the page language, but also easily reuse various language sets. HTML5 and CSS3 are the latest versions of

if you describe too many things and want to describe things clearly, we have to repeat a lot of information? The same is true of the page language, in which case it is messy and difficult to get a clue. By integrating the language of control display into CSS, we can not only guarantee the simplicity of the main part of the page, but also make it easy to reuse various language collections. HTML5 and CSS3 are the latest versions of

: Network Disk DownloadAn indispensable introductory-creating Web pages using the most up-to-date standards this beginner guide shows yo U-to-use XHTML, CSS, and JavaScript to create compelling Web sites. While learning these technologies, you'll discover coding practices such as writing code that works on multiple browsers Including mobile devices, how to use AJAX frameworks to add interactivity to your pa

HTML does not have an absolute relationship to CSS and PHP! In other words, HTML does not necessarily need CSS or PHP, but PHP must have HTML, in general! Because the server-side language PHP is eventually compiled into client HTMLFor the front-end art,

Non-professional web front-end personnel, if there are errors, please correct me, the following starts to introduce the most basic content of HTML/CSS. HTML Hypertext Markup Language, like XML, is a markup language rather than a programming language, and HTML has a complete set of markup tags to describe the different

Never noticed this before, because when you see some good web site source code, open their referenced CSS file format does not look like a specification. But luckily, I saw it yesterday. By enhancing the readability of the CSS specification, you can optimize page performance and resolve to repent.I've sorted out the CSS specifications I can understand, which may

float box. Recommended Scenarios: Copy Code code as follows: Css: Copy Code code as follows: . Item. pic {float:left;margin-right:10px;} . Item. content {overflow:hidden;zoom:1;}/* or with Display:table-cell */ I wrote an example of Copy Code code as follows: Summarize It's not technology, it's more skill. The lack of a systematic front-end development course in schools has led to a