a certification study guide

element node, 3 represents the text node, 8 represents the comment node, and 11 represents the DocumentFragment node .14. The children property of the element object, similar to ChildNodes, is also a NodeList object, but the children list contains only the element object .15. The text and comment nodes do not have a children property, meaning that the Node.parentnode property cannot return

character. A reserved word is a reserved keyword that may not be a keyword now, and may become a keyword later.6. Object and array initialization expressions are actually creating a new object or arrays. Also known as: Object direct amount, array direct amount, however they

9 1996" can also be accepted and parsed. However, the result Date object includes "Friday November 9 1996". JScript handles all of the standard time zones, as well as global standard times (UTC) and Greenwich Mean Time (GMT). Hours, minutes, and seconds are separated by colons. Although not all of these three items need to be specified. "10:", "10:11", and "10:11:12" are valid. Assuming a 24-hour clock is used, it is wrong to specify "PM" for t

Margin-bottom, to clear the element set Margin-top is not convenient (the reason for clearing the area).7. For a non-root element, if the position value is absolute, the containing block is the nearest position value is not a static ancestor element .8. Top/right/bottom/left applies to elements where the position value is not static. The margin boundary of the element contains the offset of the inner margi

the form is submitted .7. The onchange event handler for the text input field is triggered when the user enters new text or edits an existing text, indicating that the user has finished editing and moved the focus out of the text field .8. If the user directs to a new fragment in the document, thelocation.href will change , but document. The URL does not.9, document.write () joins its string argument, and then inserts the result string into the docum

server contains 3 parts: 1, a number and a text-based status code to show the success and failure of the request. 2. A collection of response headers. 3, the response body. 6.get is used for regular requests , and he applies when the URL completely specifies the request resource when the request does not have any side effects on the server and when the server's

${file#*.} : Take out the first one. And the string to the left: file.txt${file##*.} : Take out the last one. And the string to the left: txt${file%/*}: Take off the last bar/its right string:/dir1/dir2/dir3${file%%/*}: Remove the first/its right string: (null value)${FILE%.*}: Take off the last one. And the string to the right:/dir1/dir2/dir3/my.file${FILE%%.*}: Take out the first one. And the string to the right:/dir1/dir2/dir3/myThis article is from the "Linux is belong to You" blog, make sur

Chapter III1, the value of inheritance is not special, even 0 of the particularity of not. So changing the style of a hyperlink generally requires an independent declaration and cannot be changed by inheritance.2. Cascading-conflicting declarations are sorted by this cascading process and thus determine the final document representation. The core of this process is the particularity of selectors and their related declarations and the inheritance mecha

First chapter CSS and documentation1. Structured HTML: (Personal understanding)1. Separation of content, style and behavior2, label semantics, what kind of label do what kind of thing3. Conform to Web standards4, the structure is clear, header, content, footer. Reduce duplicate code for the public part.2. Unstructured pages make it difficult to build content indexes, reduce accessibility, and discourage maintenance.3, the candidate style sheet, the rel attribute is alternate stylesheet, if suppo

Problem:A s:property tag was added to the JSP page, but the page was never displayedSolve:Learn by searching and find just adding statementsReason:@taglib indicates the reference label. Import statements similar to JavaPrefix= "s" refers to the name that can be used on the page, just like the name of an object generated in Java, and can be used directly with uri= "/struts-tags"% indicates the path of the tag library. Equivalent to import a specific cl

, even if not transformation, to do a good job in operation and maintenance, learning safety knowledge to obtain safety certification is also essential. Reason three: grounding gas, international stylish, easy to test, moderate cost!As the most influential global leader in the global ICT sector, CompTIA is professional, fair and impartial in the field of information security talent

It's written in front. A mobile internet company, in the final analysis, to make a profit always need to pay users, it is clearly unwise to develop payment system, the domestic already has a number of mature mobile payment providers, Tencent is one of them. Carding the next micro-letter payment of access, today to share under the Tencent's micro-letter

friendship. In particular, the links related to the site, in case you can not find relevant sites, you may buy some PR weight or Baidu snapshots updated on the other day of the site friendship connection. Late at night, wrote here, as for the construction of the site itself, such as the structure of some of the CMS now do better, there is no need to say. Content for the king is also a constant law, but must be useful information for users, not neces

Doing well in your coursesA guide by Andrej KarpathyHere are some advice I would give to younger students if they wish to does well in their undergraduate courses.Have been tested for many years of my life (with pretty good results), here is some rules of thumb that I feel helped m E: General all-nighters is not worth it. Span style= "FONT-SIZE:14PT; font-family: ' Microsoft Yahei '; " >sleep does wonders. Optimal sleep time for me was around 7.5 ho

Transferred from: http://www.gamelook.com.cn/2015/10/232344Know the enemy, Baizhanbudai, not knowing his bosom friend, one win a negative, do not know, not bosom friend, every war will be dangerous. --Sun Wu1, their own chipsA person may be a good planner, but not necessarily a good teacher;Although the practice can reduce the difficulty of your professors, but y

a question that is often heard. As I mentioned earlier, if you have a programming base in other languages, learning as will become a very easy task. But what if it doesn't? Is it going to be difficult? The answer is in the negative. In general, as is a relatively simple language, even you can use it as

1. Summary of the study of the freshman semester University semester soon passed, about the first semester of the study summary, the total of two aspects: learning, to catch up with the teacher's pace, encountered the problem can be modest to ask classmates, which makes me from a technology small white quickly adapt to their own professional, in the face of the p

paragraph. Let's say you ' re in college and have opted to take up Machine Learning (I couldn ' t-I-another course:p) as one of Y Our courses. Now, if the course instructor doesn ' t provide a syllabus guide or a reference book then, what'll you study for your Ls? (Assume your classes weren ' t helpful). You could is

. You need to familiarize yourself with a unit testing system (jnunit) and learn different generation and deployment tools (Ant and Maven ). 27. You need to be familiar with some software engineering processes that are frequently used in Java development. For example, rationaluniiedprocess andagilemethodologies. 28. You need to be able to gain an in-depth understanding of the addition of skilled operations and configuration of different operating syst