HTML is the unified language of the Web. These rough tags contained in angle brackets constitute today's Web. In 1991, Tim Berners-Lee wrote a document called "HTML Tags", which included about 20 HTML tags used to mark web pages. He directly borrowed the markup style of SGML, which is the HTML markup style we saw later. Today, the editor of Huwu will sort out some cold knowledge about HTML5 that you may not know. Many people should know that JavaScript code can be run in the browser address bar. JavaScript code can be run directly in the browser address bar. The method is to start with javascript: followed by the statement to be executed. For example: Note that to execute javascript code, you need to enter it manually in the browser. If you copy the code, IE and Chrome will automatically remove the javascript: at the beginning of the code, so you need to add it manually to execute it correctly. Although it will not be automatically removed in Firefox, But it doesn't support running JS code in the address bar at all! ! If the browser address bar runs the HTML code, if it says the above
1. Recommended 7 articles about unpopular topics
Introduction: HTML is the unified language of the Web. These rough tags contained in angle brackets constitute today's Web. In 1991, Tim Berners-Lee wrote a document called "HTML Tags", which included about 20 HTML tags used to mark web pages. He directly borrowed the markup style of SGML, which is the HTML markup style we saw later. Today, the editor of Huwu will sort out some cold knowledge about HTML5 that you may not know. Many people should still know that the browser address bar runs JavaScript code...
2. There are some cold knowledge in CSS3 that you don’t know
Introduction: Maybe when we look at the source code of some web pages, we will find attributes or usage that we have never seen before. Today I will summarize it. Let’s take a look at the cold knowledge style calculation of CSS3. Simple calculations can also be performed in CSS. This can be achieved through the calc function. This can also make our elements adaptive. Of course, the calculated value should be a legal value. demo { ... width: calc(100 % - 500px); height: 200px;} In this demo, the width value of the element is
3. Share some unpopular HTML5 knowledge
Introduction: HTML is the unified language of the Web. These rough tags contained in angle brackets constitute today's Web. In 1991, Tim BernersLee wrote a document called "HTML Tags", which included about 20 HTML tags used to mark web pages. He directly borrowed the markup style of SGML, which is the HTML markup style we saw later. Today, the editor of Huwu will sort out some cold knowledge about HTML5 that you may not know. Many people should run JavaScript code in the browser address bar...
4. Detailed introduction to cold knowledge about WeChat development (picture)
Introduction: The pre-work for the development of WeChat public platform is as shown in the figure, URL (network link for signature verification), Token, and JS interface security The domain is required, and the URL and Token are required. Before configuring them, the signature verification code must be uploaded to your development server. Otherwise, no matter how you submit the interface configuration information, you will only be prompted for configuration. fail. The URL mentioned earlier is the network path to access the signature verification code, such as (http://huanxiteng.cn/wxsignature.php); the signature code can be opened on WeChat...
5. Detailed explanation of how JavaScript gets the true size of an image
Introduction: The sizes of images on web pages seem to be the same. In the article pages we most often see with multiple pictures, the size of the pictures is usually the same as the width of the page. In this way, the page looks like a straight cylinder. If you see this layout too much, it will feel very monotonous. The reason for this situation, I think, is largely due to the limitations of old browsers. However, with the popularity of modern browsers (Firefox/Google/IE11), browsers have fewer and fewer restrictions on page design, and the imagination of Web programmers can be greatly utilized. For example, trivia: Do you know where the [x] in every window comes from? In this article, many pictures exceed the text...
The above is the detailed content of 10 recommended articles about cold knowledge. For more information, please follow other related articles on the PHP Chinese website!

The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

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