• Bootstrap Vue fixed header


    Function scenario: the fixed header position is not at the top of the browser Method 1 Support multiple browsers (including IE) when there are merged cells in the table The implementation logic is implemented by defining two tables A table has only theadA table has only tbody > vue <div class=”table-head”> <b-table-simple fixed bordered> <colgroup> […]

  • Svg advanced application and animation


    The combination of canvas and webgl graphics technology with CSS3 can complete most of the animation and requirements. However, canvas and webgl are low-level rendering engines, and some scenes are too cumbersome to use. It is not worth advocating to use hammers to solve all kinds of scenes. SVG in the solution of typesetting, icons, […]

  • Easydl is upgraded, and Ernie’s three capabilities help to quickly customize enterprise NLP model


    Recently, baidu Wenxin has launched three new functions, adding customizationMulti label text classification and sentiment tendency analysisAt the same timeData management capabilityIt is also further enhanced to better meet the needs of developers in the field of natural language processing (NLP), which can be used by Baidu AI development platform easydl. Ernie is a semantic […]

  • Spring boot environment construction


    2.1 preparation Tool download Download JDK1.8 and configure the environment variables (if there is one, you don’t need to download and configure again). Download the latest Maven (e.g. apache-maven-3.6.3, URL http://maven.apache.org/ )And unzip it. Download the latest version of STS (e.g. sts-4.4.5.release, Website[ https://spring.io/tools )And decompress (when the new version is downloaded, a. Jar] file […]

  • Python parsing the content of variables in HTML tags


    Recently, we are trying to crawl the website data with scratchIt is found that some charts are generated asynchronously,There is only one empty tag in the HTML page obtained by scratch.Therefore, only the original data can be found. Fortunately, the JS file of the instantiation table can be traced back to. However, the data is […]

  • Interview: H5 new features: ten new features


    Interview: H5 new features: ten new features   PS: more comprehensive, so I did not summarize myself, reprinted from: https://www.cnblogs.com/binguo666/p/10928907.html     In general, HTML5 has ten more features than html4, but it does not support IE8 and below browsers 1、 Semantic tags 2、 Enhanced form 3、 Video and audio 4、 Canvas drawing 5、 Svg […]

  • From URL input to page rendering


    This is the first article in the column from URL input to page rendering — the multiprocessing architecture of browsersThe reason why we want to introduce the multi process architecture of Chrome browser is that it is the basis for understanding browser behavior, and it is also the first article in this column. I hope […]

  • You are not wrong, crawling web data, C ා can also be like jQuery


    1: Background 1. Tell a story Some time ago, I created a local people’s livelihood information number. I copied all the information from you, and you copied it from the official media. Ordinary people like anecdotes. Therefore, there is a demand. How to capture the news on the local number of anecdotes is very simple. […]

  • XPath: HTML parsing artifact of Python crawler series


    Through the previous article, we have known how to obtain the web page and download the file, but the previous web page we obtained is unprocessed, redundant information is too much, can not be analyzed and used In this section, we’ll learn how to filter the information you need from the web page, and recommend […]

  • Mybatis traversal tag value transfer


    When we want to batch operate the database based on multiple IDS, we usually use the mapper.xml The file will traverse multiple IDS through the < foreach > tag. However, a collection parameter needs to be passed in the < foreach > tag. For example, if you pass in integer [] IDS, collection = IDS, […]

  • An empty image passed to JS will be enlarged


    ul li img{ width: 200px; height: 200px; } li{ list-style: none; float: left; } .amplification{ z-index: 999; width: 100%; height: 100%; position: fixed; top: 0px; left: 0px; background: rgba(0, 0, 0, .3); display: none; } .amplification img{ width: 800px; height: 100%; position: fixed; left: 50%; top: 50%; box-shadow: 0px 0px 20px #ddd; /* z-index: 9999; […]

  • What level do front-end interns need to reach?


    As a past person, I learned some personal opinions about the subject of the question by myself, but I felt that I had taken many detours! Maybe the times are different and the choices are not the same. At that time, there was not such a good momentum At that time, it was just because […]