Tag：html5
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Time：2019-10-23
On the “Vue ecology” series of “template loader and computational property” The mission Write ‘cc-loader’ so that we can run my skeleton code using the ‘xxx.cc’ file. Add a life cycle function for ‘cc_vue’. Added ‘compute attribute ‘. Add ‘observe attribute ‘. Definition and preparation of ‘cc-loader’ This is only the most basic version, and […]
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Time：2019-10-23
Today’s point (October 10, 2019.10) — day 177 The front page of a website has a large number of pictures, which load slowly. If you, how can you optimize it? [CSS] have you ever used preload, preconnect, prefetch? What do they do? What do you think of the formal arguments of a function Soft skills […]
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Time：2019-10-23
Before this article,WebSocketA lot of people had heard of, did not see, unused, think a very tall on the technology, in fact this technology is not mysterious, can say is a very easy to master the technology, the hope is after reading this article, take out the chestnut in the article immediately oneself try, practice […]
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Time：2019-10-23
A front end that doesn’t work well with package managers is an entry-level front end that doesn’t work wellwebpackThe front end is a primary front end Three package managers can be used together, as long as you are bold enough, no problem! Recommend two articles Handwritten React scaffolding Handwritten Vue scaffolding Front-end performance optimization incomplete […]
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Time：2019-10-23
function success(position){ Alert (” position obtained successfully “,position.coords); Document. Write (” dimension “, the position. The coords. Latitude and longitude, the position, coords. Longitude, “coordinate precision,” position. The coords. Accuracy) } function error(positionError){ Alert (‘ failed to get location: ‘positionError. Code, positionError. The Message) document.write(positionError.code,positionError.Message) } var options = { enableHighaccuracy:false, timeout:3000, maximumAge:0 } if(navigator.geolocation){ […]
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Time：2019-10-21
Note description The front-end of re learning is a column opened by Cheng Shaofei [former head of mobile Taobao] in Geek time, 10 minutes a day, to reconstruct your front-end knowledge system. The author mainly sorts out some key notes and insights of the learning process, and can join the column of winter to learn […]
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Time：2019-10-21
<canvas id=”xxb” width=”500″ height=”500″></canvas> <script type=”text/javascript”> var bg = document.getElementById(‘xxb’); var ctx = bg.getContext(‘2d’); //First circle ctx.beginPath(); CTX. Linewidth = 10; // size of edge line of circle CTX. Strokestype =’rgb (43,0155) ‘; // color of circle Ctx.arc (60,60,50,0 * math. PI, 2.25 * math. PI, false); // horizontal position, vertical position, radius and radian […]
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Time：2019-10-21
In the era of mobile Internet, the sharing and dissemination of information is undoubtedly the key to the growth of APP drainage. Instead of spending a lot of energy and cost to find channels and hard promotion, it is better to start from the details, use the fastest and easiest method to realize deep link […]
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Time：2019-10-21
Written in front It will be 2020 soon. Do you know that my friends have learned CSS3 animation this year? Speaking of CSS animation is a very awkward thing. On the one hand, because the company uses less CSS animation, on the other hand, most developers are accustomed to using JavaScript to do animation, so […]
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Time：2019-10-20
Note: when using Ajax to upload, the file should not be too large, preferably less than 34 trillion, because too many consecutive Ajax requests will crash the background, and the data in the InputStream will be empty, especially in the Google browser test process. 1. Read the file as blob in simple segments, and upload […]
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Time：2019-10-20
Background of problem A lot of website design generally consists of two parts: content + footer. Content contains the main content of the website, and the registration information of the website is displayed in the footer. Because the content of the website is highly uncertain, the following two situations will occur:1. When the content is […]
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Time：2019-10-20
Some time ago, in the development process, we met with projects that need to add color mask to the background layer. Now we will specifically summarize the method of adding color mask to the background layer. Method 1: stack by positioning (attention level) <div class=”wrap1″> <div class=”inner”> </div> </div> .wrap1 { position: relative; width: 1200px; […]
