front end developer bootcamp

hog".split("").reverse().join(""); Answer: "Goh angasal A m' I" Question: What is the valuewindow.foo? ( window.foo || ( window.foo = "bar" ) ); Answer: "bar"(Only ifwindow.fooWas falsey otherwise it will retain its value) Question: What is the outcome of the two alerts below? var foo = "Hello"; (function() { var bar = " World"; alert(foo + bar); })(); alert(foo + bar); Answer: "Hello World" referenceerror: bar is not defined Question: What is the valuefoo.length? var foo = [];foo.push(1);foo.

can have the result of a check adjustment to be correct. 2, after the HTML structure is defined in the editor, in the Chrome browser, adjust the style, consistent with the design picture, the results of the style adjustment is synced directly to the CSS file. Unlike the current browser developer tools such as Firebug, after adjusting the style, the CSS code needs to be re-tested back into the CSS file. 3, there are outstanding use of measurement, a

physical state, as well as different scenes to play their respective strengths. You casually analogy, any field, there are many different tools to meet different scenarios, is the need to determine the current state.Now, React the whole solution to the unity of the river, FaceBook also claims that the technology is "learn Once,write AnyWhere", the cost of learning only once, but completed the unification of all development roles.This means that:1.app will be as hot as Web page updates, ready to

The development of the front-end area is very rapid, the era of large front-end has come, it is said that every 12-24 months, the front-end of the difficulty will increase by one times, from the following technology stack can be s

" to save the cookie to an array of Arrcookie varTips//declaring variable Tips for(varI=0; i//use a For loop to find tips variables in cookies varArr=arrcookie[i].split ("=");//identify a single cookie with an "equal sign" and save a single cookie as an arr array if(key==arr[0]){//match the variable name, where arr[0] refers to the cookie name, and if the bar variable is a tips, perform the assignment in the Judgment statementtips=arr[1];//assigning the value

automatically open tabs. Or Google browser comes with, Connection add connection, detect signal will automatically connect, in Filesyatem Add the need to debug the source code can be. If the browser is connected to a site in the node environment and Inspector is enabled, the developer tool will have an icon to quickly open the node debugger Other references (ranked by recommended index) A probe into the development of the

1, the originalOn the Internet to check the data on the separation of the front and back, some superficial understanding. Record it and make it easy to use later. The following are personal views, only for reference. If there are errors please advise and make progress together. 2, why the front and rear end separation?①, a backstage, can make a variety of

Tags: pack dir 2.3 file path Automation WEBP replication $path1. Download node. js2. Using the wget command in Linuxwget https://nodejs.org/dist/latest-v6.x/node-v6.12.3-linux-x64.tar.gz3. UnzipTAR-XZVF node-v6. 12.34. Move node to the/usr/local directorycd/usr/~/node-v6. 12.3-linux-x64./5. Add Environment variablesVim/etc/profile6. Add a node pathnode_home=/usr/local/node-v6.12.3-linux- x64Path= $PATH: $JAVA _home/bin:$NODE _home/binexport PATH Java_ HOME CLASSPATHnode_home 7. Reload the fileS

10 Sublime plug-ins required by front-end developers (1) However, finding a good plug-in may become a challenge. Some plug-ins have been abandoned by their developers, others may be incompatible with the latest version of Sublime Text 3 (when writing this article ). If you are a front-end

The performance of the front end is important for a Web application, and if a Web application's page loads very quickly and responds to the user's actions in a timely manner, the product's user experience will be greatly improved. Shows how the page load speed affects the user experience.Is your Web page fast enough? In fact, there may be many places to ascend. Google and Yahoo have also proposed some

"); file.onchange=function(){ varobject=this; console.log(object.files); for(vari=0;i varurl=window.URL.createObjectURL(object.files[i]); } }A FileList object is output in the console, which contains the multiple files currently selected. We use this object for property access to get an example of the window.file we need, and we can filter the file type and file size we need by filtering the type,size of this instance.We can then pass through window. Url.createobjecturl This method o

The technology of the front of the web is developing rapidly, the mainstream technology is changing rapidly, think of the ASP technology that I just graduated from, now very few mainstream website is used.Then to later the Java framework, and then SPRINGMVC Big line, but the recent various JS framework has been widely spread, HTML5 's launch is rich in the development of mobile Internet, this article on the latest several web

what we want to learn, let you have a bottom, a picture of intimidationfront-end engineers need to master a lot of things (which I have not touched a lot of), excellent front-end engineer is not easier than the back-end engineer. Can not eat into a fat, so you have to step to the foundation to lay a solid. Basic part:

Browser and server involves a lot of network communication content, here do a weakening introduction, as the front-end focus on part four.First, network Environmental protectionLet us first assume that the URL we visit is www.abc.com and that the address is not inside the LAN;First of all, we are in the local network of the total route should be connected with the ISP (Internet service provider), our host t

Javascript Developers in IT The demand for the sector has been very large. If you are very proficient in the language of God, you will have a lot of opportunities to change jobs and raise salaries. But before a company hires you, you have to pass the interview and prove your skills. In this article, I'll show you 5 Issues related to the front end to test the candidate

ObjectiveOr the same old, new blog before the beginning always want to long-winded a few words ... The HTTP protocol actually learned Java when the teacher had mentioned ... But... Anyway, it's gone.This period of time the company's project just required to do the conversion and migration of HTTPS, and then think about it, as if their own for the HTTP even smattering are not ... Not to mention the difference between HTTP and https ... Think of the future as a big

the Developer mode checkbox on the top right-hand corner is checked. Click Load the extension you are developing..., and the File selection dialog box pops up. Browse to the directory where your extension files are located and select. You can also drag and drop the directory where the extender file resides to the browser to chrome://extensions load it. If the extension is valid, it will be loaded and immediately active! If not, an error

(L) menu to go to the same page). Make sure that the developer mode check box is selected in the upper right corner. Ensure that the Developer mode checkbox on the top right-hand corner is checked. Click Load the extension you are developing..., and the File selection dialog box pops up. Browse to the directory where your extension files are located and select. You can also drag and drop t

The performance of the Web page is an important part of the product development process, the product success in the implementation of the function, performance can be good and bad directly affect the user experience, so that the success of the product is affected! as a web front-end developer, the performance of the front