best doctype for html email

Developed based on standard Generalized Markup Language (SGML), the DTD needs to be referenced, and the HTML5 based on XML development is not needed! DOCTYPE to standardize the behavior of the browser.HTML 5 HTML 4.01 Strict (The DTD contains all the HTML elements and attributes, but does not include both the display and deprecated elements, such as f

definition and usageIt is a directive that instructs the Web browser to write which HTML version of the page to use .In HTML 4.01, 3 Types of DOCTYPEHTML 4.01 StrictThe DTD contains all the HTML elements and attributes, but does not include the display and deprecated elements (such as font). Frameset (framesets) is not allowed.HTML 4.01 TransitionalThe DTD contai

1. DefinitionThe DOCTYPE tag is a document type declaration of a standard generic markup Language that is intended to tell the standard generic markup Language parser what document type definition (DTD) should be used to parse the document.2. RoleDeclares the parsing type of the document (Document.compatmode), avoiding the browser's bizarre pattern.Document.compatmode:Backcompat: Weird mode, the browser uses its own weird mode to parse the rendered pa

The document mode has the following functions: 1. Tell the browser what html or xhtml specifications are used to parse html documents 2. It has an impact on the rendering mode of the browser. Different rendering modes will affect the parsing of CSS code and even JavaScript scripts by the browser. Therefore, Doctype is critical, especially in IE browsers, the re

1. functionThis tag informs the HTML specification used by the browser document. tell the browser to parse the page by what specification2, the common DOCTYPE statementHTML5HTML 4.0.1 Strict" -//w3c//dtd HTML 4.01//en " " HTTP://WWW.W3.ORG/TR/HTML4/STRICT.DTD ">3. Precautions3.1,Every HTML file has a very important thi

HTML in Definition and Usage:In HTML 4.01, HTML5 is not based on SGML, so you do not need to reference a DTD.Label For example: "HTTP://WWW.W3.ORG/TR/XHTML1/DTD/XHTML1-STRICT.DTD" > In the above declaration, the root element of the document is declared HTML, which is defined in the DTD that the public identifier is defined as "-//w3c//dtd XHTML1.0 strict//en". Th

We all know tell the Web browsing interface which HTML version to use .For example:Recommendation: Always add In HTML 4.0.1, the HTML5 is not SGML-based and does not introduce DTDs.Here are the specific HTML versions required for the HTML5: (! tab or Html:5)HTML 4.0.1 has st

Instance:Browser support:All browsers support Definition and Usage:In HTML 4.01, HTML5 is not based on SGML, so you do not need to reference a DTD.Tip: Always add The difference between HTML 4.01 and HTML5:There are three types of Tips and Comments:Note: Tip: Tip: Please use the authenticator to check if you have written a valid html/xhtml document!Common

HtmlDOCTYPE>Declaration LabelDOCTYPE>The declaration is the first line of the HTML document, located inHTML>label beforeDOCTYPE>The declaration is not an HTML tag, it is a directive that instructs the Web browser to write which HTML version of the page to use in html4.01,DOCTYPE>The declaration refers to the DTD becaus

OneHTML labelDefinition and usagedeclaration must be the first line in the HTML document, before the tag. doctype> declaration is not an HTML tag; it indicates which HTML The Web browser uses for the page Version to write the instructions. In HTML 4.01 , declaration r

1.2.document.compatmode:Backcompat: Weird mode, the browser uses its own weird mode to parse the rendered page.Css1compat: Standard mode, browser uses the standard resolution rendering page.By default, browsers render pages according to their own quirks, different browsers have different quirks, and the same code shows different results.Declared the 3. There are three kinds of There is only one of the HTML5:!doctype

The backend sends an email every five minutes. The email content is html. The email is sent in 1.5 minutes, and the email content is generated by the table generated by the

1.5 minutes email, and the message content is a table generated by an HTML templatewhile (1){Ten minuteVar_dump ("Check task, please don ' t close"); Send emailProcessdbdata ($DB); Process Inventory StateProcessinventorystate ($db, $tasks); Sleep (5*60);}Read table data from databasefunction Processdbdata ($DB){$testplan _id = ";$temp = ";$TotalCaseNum = 0;$projectName = "; Check finished Testplan table->ta

HTML practice drills-advanced email login interface and qinghui online mail Management System Han shunping PHP course --- HTML getting started and practical drills Note: The following exercise program is only used to learn HTML. Therefore, other la S such as Div + CSS are not used in layout.WeiImplement Dynamic Website

Original address Today, I want to write a "low-tech" question.I've subscribed to a lot of news mails (Newsletter), such as JavaScript Weekly. Get an email every week to see what's happening this week.One day, I was thinking, is it possible for me to make such an email?Then, it's not so easy to find out. Aside from backstage and editorial work, designing an email