selector allows you to position an element based on an attribute. You can specify only one of the attributes of the element, so that all use that property regardless of its value, this element will be positioned, or it can be more explicit and locate the elements that use specific values on those properties, which is where the property selector demonstrates their power.The description is as follows:Browser support:
[Att=val], [
Continue to modify the outgoing mail code of the section aboveSend attachments:(1) Find a local file first(2) Open file, read out the file string(3) Create an object att through the Mimtext () class, and pass in the file to read the contents(4) Add the ATT header information and specify the file name(5) Add to MSG message Msg.attach (ATT)Examples:Attfile = ' test
AttributeCollection
Atts = Br. AttributeCollection
If Atts. Count > 0 Then
Dim Attid as ObjectId
For each attid in Atts
Dim att as Attributereference
att = trans. GetObject (Attid, Openmode.forread, False)
Changedobjects.add (Attid)
Employeepositions.add (Att. Position)
Next
End If
End If
End If
End If
Trans.commit ()
Finally
Trans. Dispose ()
End Try
End Sub
S
colors: similar to HSLA colors, an opacity is added.
User-interface)
Resize: You can adjust the div size by yourself, either horizontal (horizontal) vertical (vertical) or both (simultaneous), or at the same time. If max-width or min-width is added, the layout may be damaged.
Selector: (Selectors)
Attribute selectors: You can add wildcards to attributes, including ^, $ ,*
[Att ^ = val]: indicates that the start character is the
compiler reports an error for an instruction that does not specify the length of an operand but cannot be guessed by the compiler,For example, the command "Push $4 ".6. symbol extension and zero extension commandsThe vast majority of att Assembly commands for 80386 are the same as Intel-formatted Assembly commands, symbol extension commands andZero-extension commands are only commands in different formats. The length and purpose of the source operand
I. multiple choice questions
1. Which of the following statements will generate a running error? ()
A. var OBJ = ();
B. var OBJ = [];
C. var OBJ = {};
D. var OBJ = //;
2. Which of the following words does not belong to a reserved JavaScript word? (B)
A.
B. Parent
C. Class
D. Void
3. Select the true expression for the result: (c)
A. null instanceof object
B. null === undefined
C. null = undefined
D. Nan = Nan
Ii. multiple choice questions
4. incorrect understanding of javascript: (ABCD)
A. JScri
the filter element has a certain attribute, such as the href attribute of a. the attribute selection tends to be determined by the attribute value.
For example, a href = "Google.com" and a href = "www.google.cn"If a [href * = Google] is used for determination, both of them match;If a [href $ = cn] is used for determination, www.google.cn is returned.If a [href ^ = WWW] is used for determination, Google.com is returned.
Principle:
ATT * = VAL: the val
Differences between ATT assembly and intel assembly:1. ATT has a more complex way of writing instant numbers, variables ($), and registers (%. Intel directly uses it.2. the Source and Destination operands of ATT are opposite to those of intel.3. Addressing ATT uses the segment address: (offset, base address, factor) wh
The differences between att and Intel assembly syntax are as follows:
1) att uses $ to represent the immediate number, while Intel's immediate number does not need to be defined.
2) att prefixed the register name with %, but intel did not.
3) att syntax uses the opposite sequence to process source and target operand
or three states at the same time! For example, any a tag that has an HREF attribute is already available without any action: the condition of link, which satisfies the condition of having a linked attribute, if a tag is accessed, it will have: link:visited two states. Move the mouse over the visited a label8. String Matching Property Selector--There are three main typesSyntax: e[att^= "val"]: {attribute}Description: Matches the e element with the
Relative length unit. Calculates a multiple of a value relative to the root element (that is, the HTML element) font-sizeThe width of VW relative to the viewport. The viewport is divided into 100 units of the VW IE9The height of vh relative to the viewport. The viewport is divided into 100 units of VHThe larger of the Vmax relative to the width or height of the viewport. The largest of these is the Vmax, which is divided into 100 units.Vmin the smaller one relative to the width or height of the
: red;} supports IE7 IE8b and does not support FF IE6P {* color: red;} supports IE7 IE6 and does not support FF IE8b.
In IE8, the substring matching attribute selector (substring matching attribute selectors) is added in CSS3. The matching rules are similar to those in Regular Expressions:
E [att ^ = 'val'] // The substring starts with 'val'E [att $ = 'val'] // The substring ends with 'val'E [
, but inline elements cannot contain block-level elements, which can contain only other inline elements. It is important to note that thep tag cannot contain block-level tags.3.3. Attribute Selector[ATT] Matches all tags with the att attribute, regardless of its value, as long as it has this property to match. For example: [Class] {color: #f00;} E[
import another module Mimemultipart2. First read the contents of the file to be sent, File_path is the parameter name of the path3. Red box file_name parameter is the sent attachment rename4. Reference code:# Coding:utf-8Import SmtplibFrom Email.mime.text import MimetextFrom Email.mime.multipart import Mimemultipart#----------1. Parameters related to the sender------SmtpServer = "smtp.163.com" # Outgoing serverPort = 0 # portsSender = "Yoyo@163.com" # account numberPSW = "***********" # Passwor
from the beginning is a style of effect, it does not appear as imported as the first page without style, and then display the style of the page, which is the advantage of linking.CSS SelectorBasic SelectorCombo SelectorE,F 多元素选择器,同时匹配所有E元素或F元素,E和F之间用逗号分隔 :div,p { color:#f00; } E F 后代元素选择器,匹配所有属于E元素后代的F元素,E和F之间用空格分隔 :li a { font-weight:bold;} E > F 子元素选择器,匹配所有E元素的子元素F :div > p { color:#f00; } E + F 毗邻元素选择器,匹配所有紧随E元素之后的同级元素F :div + p { color:#f00; } E ~ F 普通兄弟选择器(以破折号
following, do not find the above). c2+p{color:red}4. Brother selector: The same level, very close. c2~p{color:red} 5. Multi-element selector:. c2. c3,.c2~. c3{color:red}Description of the multi-element selector. A1. A2,. a1~p{ Color:blue; font-size:15px; background-color:red; } #下面的两个就相当于上面的一个, separating with commas can reduce the reuse of code . A1. a2{ Color:blue; font-size:15px; background-color:red;
Property selector:[Att*=val] {} If the ATT element attribute value includes a Val-specified character, the style is used[Att^=val] {} If the att element attribute value starts with a character Val, the style is used[Att=val] {} If the
the human characters in 2635:P4 gamesTime limit:1 Sec Memory limit:128 MB
submit:794 solved:536
[Submit] [Status] [Web Board]
DescriptionIn a plane fight game, any character (role) has a blood volume (blood) and a positional loc (where Loc is an instance of the location Class) attribute. With a role class, you can derive different roles, such as people, Immortals, monsters, and so on. In the following procedure, you define the location class and the role class, a new name and attack data member
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