NodeJS simple WebSocket function example, nodejswebsocket
The example in this article describes the simple WebSocket function of NodeJS. We will share this with you for your reference. The details are as follows:
Based onExpressAndSocket. ioFirst, we need to install the following package
npm install --save expressnpm i
data:
Readastext
Reads a file as text, the 2nd parameter is the encoding type, and the default is UTF-8
Abort
Interrupt Read
The following example shows the use of the Readasdataurl method in the FileReader object, with the following code:Tip: The sample code for filesystem in this section is tested under Chrome 28.The example opens with the same effect as
when the WebSocket connection is closed.
The Code is as follows:Ws. onopen = function (){Log ("open ");}Ws. onmessage = function (){Log (e. data );}Ws. onclose = function (){Log ("closed ");}
C. Send messages
When the socket is open (that is, after the onopen listener is called and before the onclose listener is called), you can use the send method to send messages.
Ws. send ("Hello World ");
Iii. HTML5 We
Simple Example of HTML5 form verification, html5 form exampleThis article mainly introduces a simple example of using HTML5 form verification, including a small example of using a mobile phone. For more information, see
This article mainly introduced to you about the HTML5 header tag elements of the basic introduction, and header tag usage example parsing. Let's take a look at this article about the HTML5 header tag.
First of all, let's say HTML5 header tag element Basic introduction
A header element is a structure element that has a
HTML5 basic summary (II) -- tag example and html5 basic summary tag
Follow the blog's Mind Map to continue:
2. Check the use of tags. Here are a few small examples (not given ):
1. Use of structure labels. Here we can see the layout of a page:
2. You can draw a picture on the Canvas, such as a straight line, a line, a circle, or a rectangle. If you have
HTML5 supports Server-Sent Events-one-way message transmission data push (C # example ),
Simple Sequence Diagram for traditional WEB applications to communicate:
Currently, most Web apps have Ajax, which is like this:
HTML5 has a Server-Sent Events (SSE) function that allows the Server to push data to the client. (Usually calledData push). Data push is like th
Today we are going to bring you an html5 and css3 little robot walking animation. The figures in this example are painted in html5, And the animation effect is implemented in html5 and css3. For more information about html5 and css3 animations, see the Introduction. Today we
://www.google.com/chrome/), Mozilla Firefox (http://mozilla.com/firefox/), and Opera (http://opera.com ), these browsers support the features we need.
PreparationHTMLDocument
Every website, page, and Html5 game starts with the default HTML document. This HTML document starts with the basic HTML code. We will also start developing our HTML5 games from index.html.
Action time
We will create our
The following is an example of using html5 to draw a line chart. I think it is quite good. I will share it with you now. I would also like to give you a reference. Let's take a look at it with xiaobian.
Example code for creating a line chart using html5 _ html5 tutorial skil
Example code for generating bar chart (Bar Chart) effects using html5, html5 bar chartCopy XML/HTML Code to clipboard
Code for generating a bar chart (Bar Chart) using html5
Running result:
The example code for generating bar chart (Bar Chart) Effects in
following syntax:"utf-8">For the daily use of web development, combined with the use of HTML 5 character set, the author gives the following suggestions:
The highest priority is to specify the encoding using the HTTP request header.
Unified full-site character set encoding, HTML 5 recommended UTF-8 character set.
Use the META tag to confirm the character set encoding and place it wherever possible in the first child element of an HTML tag.
Third-party referenced scripts, wh
This article mainly introduces a simple example of using HTML5 form verification, including a small example of using the mobile phone. If you need a friend, you can refer to HTML5 to provide the patern attribute for form elements, it accepts a regular expression. When a form is submitted, this regular expression is use
I think you have some knowledge about the automatic focus and placeholder text of HTML5. To use the automatic focus function of HTML5, you only need to add the autofocus attribute in the form field, first, let's take a look at the sample code that uses HTML auto-focus and placeholder text. If you are interested, let's take a look at the sample code that uses HTML auto-focus and placeholder text.
The Cod
data:
Readastext
Reads a file as text, the 2nd parameter is the encoding type, and the default is UTF-8
Abort
Interrupt Read
The following example shows the use of the Readasdataurl method in the FileReader object, with the following code: Tip: The sample code for filesystem in this section is tested under Chrome 28.The example opens with the same effect
This article describes how to implement the drag-and-drop function in HTML5 + CSS3. For more information, see the following section.
Drag and drop is an integral part of the HTML5 standard.
Browser support: Internet Explorer 9, Firefox, Opera 12, Chrome, and Safari 5 support drag and drop.
Dragged element, dragElement:(1) Add an event: ondragstart(2) Add property: dragable
Placement element, dropElement:1.
Example of calling third-party location navigation on the html5 page, html5 third-party
Pull third-party navigation applications from the h5 page
To be prepared:
Authenticated public account
Domain names that have been filed
Background: The public account is clicked to jump to the h5 page, and the navigation function is required.
Requirement: when a user cl
Tip 2. Then, use the DIV node in the body to create a game platform. There are two beats and one ball on the game platform. Let's not talk about the code.
Headerandfooter
Html5 introduces many new features and improvements, one of which is semantics. Html5 adds new elements to enhance semantics. We only use two headers and footer.
The Header (description) of the tag definition document ),
The label
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