The shortcut input method in HTML

Quick Input Method:

1. Lorem+tab key: The text that comes with it
2. Format: lorem+n (number of words to appear)

3. Format: P>lorem10+tab
   Output 10 words together with P output

4. (Element) P+tab: auto-replenish end tag

5. Note: Ctrl +?
   Note: Which line of the mouse is deleted together

6. Ctrl+d: copying when moving forward
7. Ctrl+f: Find
8. Ctrl+r replacement
9. Multi-Line Input:
10. Div>p>span{xuanzi$$}*5 $: Represent numbers, two are 01,02,03.04,05

In the HTML selector:

First, the basic selector

1. Wildcard selector: *{} changed all styles

2. Element selector: element {}

3. Combination selector/Set selector: element 1, Element 2, class, Pseudo class, Element. Class {}

4. Class Selector

HTML:<H2 class= "F46" >Css:. f46{}
Characteristics
1, in the CSS must start with the dot (English)
2. Include letters, numbers, hyphens (-), underscores (__) in HTML
3, after the HTML dot number must be the beginning of the letter
4. Case-sensitive in HTML
5. A class selector can be applied to multiple tags in html
Example:
Html:

Css:. f45{}
This is the case for precise settings such as: in Div>ul>li

5. ID Selector
HTML:<H2 id= "F46" >CSS: #F46 {}

Second, level selector
1. Descendant Selector
Format: Ancestor descendant selector {}

Html:

<div><p><em></em></p></div>

Css:

div P em{}

2, sub-level selectors
Format: Parent element > child element {}

Html:<div><p><em></em></p></div>

Css:

Div> p> em{}

3. Brother Selector
Format: Sibling element A + sibling element b{}
Select the B element after the a element, and AB must be adjacent, that is, there is no other element between AB
Html:

<div><p><em></em><i></i></p></div>

Css:

em+i{}

4. Universal Selector
Format: Sibling element a~ sibling element b{}
Select the matched B element, which is all B elements following the A element
Html:

<div><p><em></em><span></span><i></i></p></div>

Css:

em~i{}

Third, pseudo-class selector
1. Dynamic pseudo-Class selector
(1), dynamic
Element: Link
Element: Visited
(2), static
element: hover
Element: Active
Element: Focus
2. Style when the focus (tab) key is triggered
Note: A tag uses the most
Get a picture in what position to display
4, Structure class selector

Format (for multiple identical elements under a div) the element to be modified: first-child{} (change the first element) the element to be modified: last-child{} (change the last element) the element to be modified: Nth-child (n) {} ( n the element to be changed in the number of elements to be modified: Nth-last-child (n) {} (modifies the penultimate element) the element to be modified: Nth-child (ODD) {} (when the element position is modified at odd digits: odd represents an odd number or is written as 2n+ 1y element to modify: Nth-child (even) {} (when the element position is modified at odd digits: even represents an even number, or is written as 2n
Div>p (element 1): Nth-of-type (n) {} (modifies the style of the second p in a div with type P (element 1)

Empty element: empty{} (element style that changes element to empty (no content))
There is only one element: Only-child (there is only one element in the div (which can be other elements) and only one can change the style
5, negative pseudo-class selector
Format: element: Not (: Nth-child (4)) {} Except for the fourth one does not change the style other changes, {} write the corresponding style
6. Pseudo Element Selector
Manipulate a piece of text
The rules of selection
Only Color,background-color (background) two properties
Format

:: Selection{color:red;background-color:bule;}

:: first-letter{} Select the first letter to change the style:: first-line{} Select the first row to change the style

Add content before/after tags (try to select labels with line wrapping)

I::before{content: "Hello"}

Add "Hello" to the I tag and display it in the Web page

Em::after{content: "Mr. Wang"}

Add "Mr. Wang" after the EM tag and display it in the Web page

Iv. attribute selector (typically used in input)
Html

<input type= "Text"/>

As1

Input[type= "text"]{color:red}html;<input type= "number-rfdbx"/>css:input[type vertical bar 1= "number"]{color:red} selected to " number-"Start input label Vertical line =

Html

<input type= "number-rfdbx text"/>css:input[type$= "number"]{color:red select the input tag with "text Start" $=

Html

<input type= "number-rfdbx dgsb f46 dgd"/>css:input[type*= "number"]{color:red} Select the input tag with "include F46" *=

Html

<input type= "number DGSB text Gav"/>css:input[type~= "#"]{color:red} selected with "text" input label, and multiple attributes are separated by spaces ~=

Html

<input type= "Text-rfdbxvs gsvx"/>css:input[type^= "number"]{color:red} Select Start with "text" or write "TE" input tag ^=

The shortcut input method in HTML