About the implementation of automatic playback effect of background music in h5

The autoplay properties of music are also introduced here: <audio controls="controls" autoplay="autoplay"> <source src="song.ogg" type="audio/ogg" /> <source src="song.mp3 " type="audio/mpeg" /> Your browser

HTML5 explanation of dataTransfer object

HTML5 drag and drop data transmission Although native drag and drop is implemented through dragstart, drag and dragend events. But this is just drag and drop. There are still some drag and drop problems in IE6 and IE7, and data exchange is not implemented. In order to realize the exchange of data, IE5 introduced the dataTransfer object.

Summary of Tomcat uninstallation and problems that arise during the process

First of all, my computer is win8 and Tomcat 9 is installed. Because I accidentally clicked something wrong before, tomcat suddenly failed to start, so I planned to uninstall and reinstall. During the reinstallation process, I encountered the following problems: 1. According to the normal To operate the uninstall process, enter sc delete Tomcat9.0.0.0 in the command prompt and click Enter. [SC] OpenService fails: 1060 The specified service is not installed. Error reason: The entered service name is the Tomcat9 above.

Introduction to HTML5 header meta

Used to define page meta-information. To define meta-information is to specify some name-value pairs. In addition to specifying the id attribute, this element can also specify the following three attributes: http-equiv: Specifies the meta-information name. The name specified by this attribute has special meaning. It can return some useful information to the browser to help the browser. Handle web content correctly. name: Specifies the name of the meta-information. The name can be specified arbitrarily. content: Specifies the value of meta-information. Specifying effective keywords for web pages will help search engines index this page.

Introduction to H5 semantic tags

H5 new tag ---- Semantic tag difference: 1. The default style is different 2. It has SEO optimization effect 1. header, generally used as the head of the web page 2. aside, sidebar 3. nav, navigation bar 4. address, address, font style default italic tag defines contact information for the author/owner of the document or article. If the element is inside an element, it represents document contact information. If the element is inside an element, it represents the article's contact information. 5.sec

Viewport screen adaptation in html5 development

With the popularity of high-end mobile phones (Andriod, Iphone, Ipod, WinPhone, etc.), mobile Internet application development has attracted more and more attention. Using html5 to develop mobile applications is the best choice. However, each mobile phone has a different resolution and screen size. How can we make the application or page size we develop suitable for various high-end mobile phones? Learning the use of html5 viewport can help you do this...

HTML5 tag selection method guide

HTML5 tag selection method guide

Usage of MUI top tabs

MUI is a high-performance front-end framework that is closest to the native APP experience. Its more important functions are: pull-down refresh, side-sliding navigation, sliding trigger operation menu and top (bottom) tabs, etc.

Content Security Policy (CSP) in HTML5

Preface: Cordova does not support inline events, so click events must be extracted into js. The following is excerpted from the official website, I hope it will be helpful to you. In order to alleviate a large number of potential cross-site scripting issues, Chrome's extension system has included the content General concepts of Security Policy (CSP). This introduces some fairly strict policies that will make extensions more secure by default and give you the ability to create and enforce rules that govern the types of content that can be loaded and executed by extensions and applications. Generally speaking, CSP acts as a hacking/whitelisting mechanism for extension loading or

What is the difference between jquery on bind

Starting from version 1.7+, JQuery provides on() and off() for binding and canceling event processing functions. These two APIs have many similarities with the bind() and unbind() originally provided by JQuery, but also have some differences. For a detailed introduction to bind and unbind, please refer to this article. The function signatures of on() and bind() are as follows: [javascript] view plain copybi

h5 avatar image rotation css3 precisely controls the position of each image

H5 avatar picture rotation css3 precise control of the position of each picture: 1. The following is the required rendering: 2. The pictures used are: <div id="box1Kuang1"> <div class="con-show01 mar-top1 mar -left1"> <div class="con-show02"> <div class="con-show03"&gt

Detailed explanation of angular's $watch method

What is HTML5 History mode

vue-router's default hash mode - uses the hash of the URL to simulate a complete URL, so when the URL changes, the page will not be reloaded. If we don’t want an ugly hash, we can use the routing history mode, which makes full use of the history.pushState API to complete URL jumps without reloading the page. const router = new VueRouter({ mode: 'his

Solving the problem of drawing fonts, pictures and blurry graphics in html5 canvas

Most appear on high-dpi devices, which means more pixels per square inch, such as phones and tablets. Of course, many high-end desktop computers also have high-resolution and high-dpi monitors.