udacity front end developer

properly, and alert will prevent the page from continuing rendering. This means that after the developer has debugged, it's a bit of a hassle to manually clear the debug code.Therefore, the new generation of browsers Firefox, Chrome, including IE, have introduced the JS Debug console, support the use of similar " console.log(xxxx) " in the form of printing debugging information in the console, without directly affecting the page display. In IE, for e

debug information of alert must add a statement like "alert (xxxxx)" In the program logic to work properly, and alert will prevent the page from continuing rendering. This means that after the developer has debugged, it's a bit of a hassle to manually clear the debug code.Therefore, the new generation of browsers Firefox, Chrome, including IE, have introduced the JS Debug console, support the use of similar "Console.log (xxxx)" form, in the console t

JavaScript Style Guide Felix ' s node. js Style Guide Idiomatic.js Code conventions for the JavaScript programming Language Jsbeautifier Airbnb JavaScript Style Guide JSON Generator JSON Generator–tool for generating random JSON data General front-end development and the habit of front-

Most people are very concerned about personal improvement in technology. But keeping an understanding of new technologies is a big challenge, after all, the amount of information we need is too large. Over the past 2012 years, the development of the front-end was accompanied by a number of revolutionary breakthroughs and a redefinition of the front end.We are mov

First of all, the value of Web front-end engineers, the current web product interaction more and more complex, user experience and site front-end performance optimization These have to rely on web front-end engineers to do the Web

Cloud, this is a line of code to move your site to achieve the same URL and real-time automatic synchronization of content services provider. Cloud with the technology is a cloud-based, using HTML5 for cross-screen adaptation of the site, it developed a line of JS code for the target website, and embedded in the PC website, this JS code through the PC website target page data analysis and crawl, in the cloud to complete the user's current device Web page best display method of calculation, Final

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

What is 1.vue.js? Vue.js (pronounced/vju?/, similar to view) is a set of progressive frameworks for building user interfaces. Unlike other heavyweight frameworks, Vue uses a design that is developed from bottom-up increments. Vue's core library focuses only on the view layer and is very easy to learn and easily integrates with other libraries or existing projects. On the other hand, Vue is fully capable of driving complex single-page applications with single-file components and librarie

BackgroundAs a web developer, most people understand the performance optimization methods of some websites, in fact, most of the methods are not complex, such as the compression of the front-end JS and CSS to reduce the request size, by merging to reduce the number of requests. Here stand. NET back-end Programmer's per

As major Internet companies set up Web front-end development engineers, design engineers and other positions, the Web front-end more and more recognized by Internet enterprises. And its importance and status also with the browser-side of the rich client's embodiment and increasing. The future and trend of HTML5, the in

expires this is a temporary domain name, the original domain: http://www.zcfy.cc/. Weekly featured subscriptions under "Archive" menu, hidden a bit deep, hehe)Developer headlines and Code farming weeklyA lot of developer headlines, part of the robot crawl, so the quality is not good, the code Nong Weekly content is great, but the front-

right to the left parsing is very efficient, because the first ID selection will basically limit the scope of the lookup, but in fact the browser to the selector parsing is from right to left. As the above selector, the browser must traverse the ancestor node to find each a tag, and the efficiency is not as high as previously thought. According to this line of browser features, in the writing selector need to pay attention to a lot of things, someone has enumerated, details reference here . 3.

Java. Learn how good it is to see how much time you have spent.Be sure to read all the relevant books and understand the important object-oriented programming ideas (however, avoid superstitious object-oriented programming). •learning operating systems and computer networks。 At least some basic concepts need to be clear, specific details, no need to be overly tangled. To find the solution phase: Okay.. The above can be zoned "superficial understanding" stage, then you can choose a

currently the best front-end development tool. Since its birth, Chrome has invested a lot of energy in its developer tools, and until now, Google is constantly optimizing these tools. In general, Google will release Optimizations to chrome Developer Tools every six weeks, and launch some new features. Chrome developm

reduce the number of CSS, Reduce the number of HTTP requests, JS similarly.(PS: Reduction of repetitive Code, code reuse, here is particularly important)Iii. optimization of the number and size of background imagesWhen we restore the design of the designer to a static page, unless the page all the decorations are all color blocks, the content is all text, no pictures, if not, then we need to optimize the image processing. Of course, the content of the picture we have no way, because he is part

: Reduction of repetitive Code, code reuse, here is particularly important)Iii. optimization of the number and size of background imagesWhen we restore the design of the designer to a static page, unless the page all the decorations are all color blocks, the content is all text, no pictures, if not, then we need to optimize the image processing. Of course, the content of the picture we have no way, because he is part of the content, the general situation is due to the editing process, of course,

platform design without coding development concept, and the operation mode of Excel is in line with the use of designers, greatly accelerate the work efficiency, is a good helper of daily work.Spread Table Development Series, easy integration and operation of each platform excel!Spreadjs and Spread Studio have recently released the V11.1 version, please visit the official website to learn more.Visit Spreadjs official website: Http://www.grapecity.com.cn/dev