difference between elements and premiere elements

The concept of pseudo-class and pseudo-elements in CSS is easy to confuse Let's talk about the difference between pseudo-class and pseudo-elements today. Defined First look at the definition of pseudo-class and pseudo-elementsThat's how they explain it. Pseudo-Class: Used to add special effects to certain selectors Pseudo-element: used to add special

the value of the property can be a string, or it can have other forms, such as pointing to a picture URL :Content:url ("Img/icon.png")use with pseudo-classPseudo-elements :before can also be used with pseudo-classes, here :before are examples of pseudo-classes that are often used with mates :hover :. Before:hover:before{content: ' You before '; color:red;} class= "before"> mediv>The mate accessor function attr () uses theThere is also a more common

This article mainly introduces the details of the pseudo-class and pseudo-elements in the CSS and the difference between the two, in fact, CSS3 in the specification of a simple rough method, that is, pseudo-class with a colon before the pseudo-element is represented by two colons, so it is not easy to confuse, the need for friends to refer to the next The concept and function of CSS pseudo-classA CSS pseud

First, read the w3c definition of both: css Pseudo-classes are used to add special effects to certain selectors. css Pseudo elements are used to add special effects to certain selectors. Can be clear two points, the first two are related to selectors, the second is to add some "special" effect. The special point here is that the two describe css something else that cannot be described.Pseudo-Cla

Maximum difference between two elementsfrom http://www.geeksforgeeks.org/maximum-difference-between-two-elements/April 10,201 0 Given an array arr [] of integers, find out the difference between any two elementsSuch that larger element appears after the smaller numbeR in arr []. Examples: If array is [2, 3, 10, 6, 4

page elements in order to achieve a perfect set of layouts and behaviors and styles.2.js "= =" and "= = =" Difference?"= =" is the equality character, is the contrast value, "= = =" is a strict character, is the memory address of the comparison stack, determine whether the value and type are exactly equal.the "= = =" operator compares the criteria for determining whether two values are equal.1) If the two

-transform:scale (0); Transform:scale (0); /* Do not occupy space, cannot click */}visibility:hiddenthe difference between Display:none andThere are three different points: Space occupies Reflow and rendering Implicated Sex 1th, must all know;2nd, the display:none hidden generation of Reflow and repaint (Reflow and repainting), without visibility:hidden this effect on the front-end performance problems;The 3rd estimate is t

reaches a certain state, it may get a pseudo-class style, and when the state changes, it loses the style.As you can see, its function is somewhat similar to class, but it is based on abstractions outside of the document, so it is called a pseudo class.Unlike pseudo-class elements that are specific to a particular state, a pseudo-element operates on a particular content in an element that operates at a level deeper than a pseudo-class, and therefore i

difference between the two has come out. That is: The effect of a pseudo-class can be achieved by adding an actual class, while the effect of the pseudo-element needs to be achieved by adding an actual element, which is why they are called pseudo-classes, a pseudo-element. SummarizePseudo-elements and pseudo-classes are so easily confused because they are similar in effect, but in fact css3 ,

CSSPseudo-classes are used to add special effects to certain selectors. CSSPseudo-elements are used to add special effects to certain selectors. Can be clear two points, the first two are related to selectors, the second is to add some "special" effect. The special point here is that the two describe css something else that cannot be described.Pseudo-Class typesPseudo element KindDifferenceThis :first-child is compared by pseudo-class and pse

Pseudo-classes and pseudo-elements are independent of the document structure. The way they get the elements is not based on the element characteristics of the ID, class, attribute, but on the element that is in a special state (pseudo-Class), or the element's special content (pseudo-element). The difference is summarized as follows:① does not have the same wordin

This is what's in "the Sharp jquery" book. div>p>span>span>a>a>b>b>p>div> P is a sub-element of the Div, span is a child of P, and a, B is also a child of PP is the descendant element of the Div, and span, a, b are the descendant elements of the DivDescendants can be thought of as all elements contained, while child elements are just

Almost everyone who has done Web development has asked, What is the difference between the element ID and name? Why do I need a name if I have an ID? We can also get the most classical answer: ID is like a person's ID card number, and name is like his name. ID is obviously unique, and name can be repeated. Last week, I also encountered the ID and name problems. I entered an input type = "hidden" on the page and wrote only one id = 'sliceinfo'. After

Title Description:There are two arrays, B, size is n, array element value arbitrary integer number, unordered;requirement: To minimize the difference between the and of elements of array A and the array B elements by swapping the elements in a A. #include "stdafx.h" #include Exchange two

The difference between after () and before () method After ()-the method is to add the parameters inside the method to the back of the jquery object;For example: A.after (b) means to put B behind A;Before ()--the method is to add the parameters in the method to the front of the jquery object.For example: A.before (b) means to put A in front of B;Ii. Differences between the methods of InsertAfter () and insertbefore () In fact, the

CSSPseudo-classes are used to add special effects to certain selectors. CSSPseudo-elements are used to add special effects to certain selectors. Can be clear two points, the first two are related to selectors, the second is to add some "special" effect. The special point here is that the two describe css something else that cannot be described.Pseudo-Class typesPseudo element KindSummarizePseudo-elements