web scraping javascript

Put the table of the curriculum to be printed into the div tag, specify the area to be printed, and call window. print the specified content. Recently, When I printed the course schedule on the web page, I found some information online and finally used the following method to implement the functions I needed. Put the table of the curriculum to be printed into the p tag, specify the area to be printed, and call window. print to print the specified cont

For a long time, webmasters choose to use JavaScript to achieve the dynamic behavior of the Web page, the reason for this is varied, such as speed up the page response speed, reduce site traffic, hidden links or embedded ads. Because the early search engine does not have the corresponding processing ability, causes in the index this kind of page often to have the problem, may not be able to collect the valu

", a new solution is also proposed in HTML5, which is Web Worker. Web Worker is to use the Worker class to open up an additional thread in the current main JavaScript execution thread to load and run specific JavaScript files, the new thread and the JavaScript main thre

a date after 5 days: var mydate=new Date () Mydate.setdate (Mydate.getdate () +5) Note: If you increase the number of days to change the month or year, the Date object will automatically complete the conversion. Compare dates A Date object can also be used to compare two dates. The following code compares the current date with August 9, 2008: var myDate=new Date(); myDate.setFullYear(2008,8,9); var today = new Date(); if

javascript|web|xml| Data | Web page b/S structure of the program to perform an operation often need to refresh the page, in the refresh process, the server will not only send data to the client, but also need some formatting information, such as tables, pictures, headings, etc. resend, occupy a lot of bandwidth. Although IE provides a page caching function, the l

IntroductionPatrick Catanzariti, a Web development engineer, recently published in SitePoint, "JavaScript Beyond the Web in 2014", which describes the application of JavaScript in the Internet of things, which is very interesting. As a hobbyist and practitioner of JavaScript

JavaScript is a part of web design that is not open, and one of the hottest programming languages. As a web developer, JavaScript is almost a must-learn language. With the development of technology and the development of software and hardware, the performance of JavaScript h

Javascript| Web Page This javascipt tutorial will let you feel the flash brings you the infinite charm of the sound world. Before I begin this tutorial, let me introduce what this tutorial involves: Hide embedded swf, stream-synchronized SWF, start stream from specified frame, stop and play stream, check whether track is playing, check whether the player is ready, check the percentage of SwF reprint, verify

Web development is more of a bother, need to master a lot of things, especially in front-end development of friends, need to pass 10 lines. Today, this article introduces beginners to some basic concepts and techniques used in web development, from A to Z a total of 26 items, each corresponding to a concept or technology.A-ajaxAJAX is all called "asynchronous JavaScript