basic html5 boilerplate

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Basic use of canvas for html5 learning: div is in front of js; localStorage is stored in different locations based on the browser; application cache; placeholder attribute provides a tip (hint ), description of the expected value of the input field.

The basic usage of localstorage is as follows: the default storage quantity is string type. If (localStorage. pageCount) {localStorage. pageCount = Number (localStorage. pageCount) + 1; // pageCount custom} else {localStorage. pageCount = 1;} document. write ("visit" + localStorage. pageCount + "time (s)"); In this way, a database in your local disk stores the data. I could not accept the data written to my local disk and could not find its exact loc

The HTML5 and CSS3 Basic course of reading notes

content is tagged with the most appropriate HTML element. Semantic HTML is the cornerstone for building effective Web sites, improves accessibility and interoperability, improves search engine optimization (SEO), makes it easy to maintain code and add styles, and often makes code less and page loading faster. This will focus on future programming practices.Chapter IIThis chapter focuses on how to deal with files and folders when building a Web page, create files and organize them reasonably. Pr

HTML5 Elements and Basic grammar

Transferred from: http://www.cnblogs.com/Sivan/p/5727083.htmlHTML5 Elements and Basic grammarHTML tagsStart tag (opening tag): Open tagEnd tag (closing tag): Closed labelElementsDefinition: HTML element refers to the code from the start tag to the end tag (the element starts with the start tag and terminates with the sleepover tag)Element content: The content of an element refers to the content between the start tag and the end tagFeatures of the elem

Basic svg knowledge in html5 + SVG Learning Guide, html5svg

Basic svg knowledge in html5 + SVG Learning Guide, html5svgThis article mainly introduces the basic concepts of SVG and the differences between SVG and CANVAS. Finally, we provide a simple example to help you better understand the Scalable Vector Graphics of SVG. We recommend it to you. Baidu Encyclopedia: Scalable Vector Graphics is a format used to describe two

0 basic html5-jquery (2) Selector-

different browsers is different. In general, it is not ideal to use this method to locate DOM elements. Therefore, in order to achieve better optimization results, you must try to avoid using this method that is harmful to performance. 5. $ (": hidden ") Similar to the way in which attributes are used to locate the DOM, this pseudo selector does not have a local js method for direct implementation. In addition, jQuery needs to search for every element to locate this selector, which will bring

HTML5 Elements and Basic grammar

pairProperty values should always be enclosed in parentheses, and double quotes are the most common, but using single quotes is no problem HTML annotationsYou can insert comments in your code to improve the readability of your code, and comments are not displayed on the page, and the browser ignores themFormat:1 DOCTYPE HTML>2 HTML>3 Head>4 MetaCharSet= "Utf-8">5 title>Untitled Documenttitle>6 style>7 8 #box1{9 Background-color:Red;Ten } One . Div1{background:Yellow;} A . Div2{Border:1px solid

HTML5 Exclusive share: Native JS learning Note the basic data types and operators

and right sides of the type are inconsistent, then implicitly converts to a consistent type before comparing)= = = Equals (returns False if both left and right types are inconsistent)! = does not equal (if the left and right types are inconsistent, then implicitly converts to a consistent type before comparing)!== not equal to (no conversion type, direct comparison)logical operators and|| Or! Non-The logical operator of JSThe result of the logical operation is a Boolean value, with three logica

0 Basic HTML5 Game Making Tutorial 2nd Chapter simple Drawing

, the triangle as an exampleContext.beginpath (); Context.moveto (100,100); Context.lineto (50,200); Context.lineto (150,200); Context.closePath () ; context.fillstyle= "Green"; Context.fill ();Get the triangles like.Three, round the drawingIn fact, the computer is drawing an arc, and finally through the Closepath ().The function that needs to be used is Context.arc (x,y,r,sangel,eangel,countclockwise);where x is the center axis, y is the center ordinate, R is the radius, the Sangel is the start

Draw a rectangle for HTML5 canvas Basic Drawing, html5canvas

Draw a rectangle for HTML5 canvas Basic Drawing, html5canvas It is just a container for drawing graphics. In addition to attributes such as id, class, and style, there are also attributes of height and width. There are three steps to draw an element on the 1. Obtain the DOM object corresponding to the 2. Call the getContext () method of the Canvas object to obtain a CanvasRenderingContext2D object;3. Call

HTML5 basic audio and video tutorial

; + - Script> + varbtn=document.getElementsByTagName ("Button"); A varMyvideo=document.getElementById ("Video1"); at varPro=document.getElementById ("Pro"); - varran=document.getElementById ("ran"); - - //Turn off Sound - functionEnablemute () { - myvideo.muted=true; in btn[0].disabled=true; - btn[1].disabled=false; to } + - //Turn on sound the functionDisablemute () { * myvideo.muted=false; $ btn[0].disabled=false;Panax Notoginseng btn[1].disabled=true; - } the + //Play Video A functionPlay

Html5 canvas (Basic rectangle) and html5canvas rectangle

Html5 canvas (Basic rectangle) and html5canvas rectangle Start with a simple fillRect(x,y,width,height) Add a width to the coordinates x and y, and the height is as follows: FillRect (500,500, 500) // Add a rectangle with a width and a height of at coordinate strokeRect(x,y,width,height) Add a wide, high border rectangle to the coordinates x and y. However, you need to use lineWidth, lineJoin, strokeStyle,

"HTML5 and CSS3 Basic Course" 4–5 Chapter

the server. Propertiesaltfor an alternative description of the image,IE10The alternate text appears next to a small square with a fork and is surrounded by a box;Firefoxand theOperain other browsers, alternate text appears separately;Chromeand theSafaridoes not displayalttext, but the icon for the actual missing image. Propertieswidthand theHeightsets the image size, in pixels. 4. Icons:Faviconthe size should be at least16*16(units in pixels),IPhoneand theIPod Touchof theFaviconsize is57*57or11

html5--Basic Notes

1. For before:Now you can use this:2. Common non-reserved discarded parts are strike, enter, font, acronym, frame and Frameset3 semantic elements4. Text and semantic elements5.CSS3 Multi-Column layoutColumn-widthColumn-countField Gap Column-gap Divider line Column-rule6. Word WrappingWord-wrap:break-word;html5--Basic Notes

Bird 0 Basic Learning HTML5-----2.2, CSS style

, such as left-aligned, right-aligned, or centered:The Vertical-align property sets vertical alignment, such as top, bottom, or center alignment:6. Inner Margin of tableTo control the distance between the contents of the table and the border, set the Padding property for the TD and TH elements:7. Color of the tableSeven, ContourA contour (outline) is a line that is drawn around an element, at the periphery of the edge of the bounding rectangle, that acts as an element of prominence.The CSS outli

HTML5 the most basic language classification

Column: Column: The is founded in 1949.Column: Column: Here's a short quotation here's a short quotationColumn:L column:The BODY element defines the body of the document, including all the contents of the document (text, hyperlinks, images, videos, tables, lists, etc.)Column: The contents of the Column: Column: img element to insert a picture into a Web page src= "/i/eg_tulip.jpg" alt= "First Name"/ Column: 列:Column:The Column: Columns Column:

"HTML5 and CSS3 Basic Course" Study notes--two Day

Seventh Chapter1. Style sheet: selector and life block2.!important: The importance of a statement is higher than the others, at the end of the add3, attribute value: inherit; is forced inheritance4, 1em=16px;5, can accept the attributes without units: Line-height, Z-index, opacity6, Background-color/color/border/box-shadow/text-shadow:rgba (89,0,127,.2); The last one is transparency.7. Attribute: HSL (95,10%,28%) Hue, saturation, brightnessEighth Chapter1. Add media= "Print/screen/all" to Nineth

"HTML5" Study note 1 (Basic introduction)

HTML is Hyper Text Markup language Hypertext Markup LanguageHTML naming Conventions 1. The file name suffix is. html or. htm2. The file name can be used in both English and Chinese.URL is divided into1. Absolute url--> Displays the full path of the fileConsists of two partsPart I: Protocol name, such as Thunderbolt protocolPart Two: The name or IP address of the server, and the path to the file and the name of the file itselfsuch as http://www.baidu.comhttp://www.baidu.com/test/2. Relative URLsD

HTML5 | Canvas Basic Operations

varCanvas =document.getElementById (elem);3Canvas.width = 800;4Canvas.height = 500;5 varcontext = Canvas.getcontext (' 2d ');6Context.fillstyle = "#eeefff";7Context.fillrect (0,0,800,500);8window.location = Canvas.todataurl (' image/jpeg '));9}————————————————————————————————————————————Demo5-Simple animationsHTML DOM setinterval () MethodfunctionDraw (Elem) {varCanvas =document.getElementById (Elem); Canvas.width= 800; Canvas.height= 500; varcontext = Canvas.getcontext (' 2d '); Contex

3 basic tags commonly used by html5-

3 basic tags commonly used by html5-

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