javascript web scraping example

In many web applications, we may encounter many scenarios where multiple rows of records need to be inserted dynamically. For example, on the talent website, when we fill in our resumes, we need to fill in our project experience. We can dynamically Add a number based on our actual situation, this is not added in the form of a separate page. This dynamic addition is dynamically added under the same page, and

Reprint please specify the source!Original link: http://blog.csdn.net/zgyulongfei/article/details/7909006Sometimes for a variety of reasons, we need to collect data from a site, but because different sites on the way the data display slightly different!This article uses Java to show you how to crawl the data of the site: (1) crawl the original Web page data, (2) Crawl the Web page

. Expression is an arbitrary formula, variable, constant.For example, define a function account () that calculates the amount of an item, which has two parameters, used to specify the unit price and quantity, and returns the calculated amount, with the following code:function account (Price,number) {var Sum=price*number;return sum;}Invocation of the 3.4.2 functionExample: Account (10.6,10);==============================================================

IntroductionRecently, in the angular community of prototype developers, a full JavaScript development architecture mean is suddenly popular. The first letter represents: (M) Ongodb--nosql document database, using JSON style to store data, and even use JS for SQL query; (E) xpress--node-based web development framework; (A) agular-- JS's front-end development framework provides declarative bidirectional data

has not been able to adhere to the habit of blogging, after n months once again write a blog, is also the first technical blog, the example project is two or three months ago in the school wrote, writing is also relatively simple, the first contact API development, mostly just divert, their programming ability needs to improve. A brief introduction to this example, the main function of the

At present, in software development, unit testing is increasingly valued by developers. It can improve the efficiency of software development and ensure the quality of development. In the past, unit tests were often used in server development. However, with the gradual division of work in the Web programming field, related unit tests can also be carried out in the front-end Javascript development field, to

The following is for reference only, adults do not speak right and wrong only talk about pros and cons 1. What is a JavaScript prototype chain? How to understand Each object in JavaScript has a prototype property, which we call a prototype The value of the prototype is that an object has its own prototype, so that a prototype chain is concatenated together, the chain header of the prototyp

Reprint please indicate the source.original link:http://blog.csdn.net/zgyulongfei/article/details/7909006Sometimes for a variety of reasons. We need to set the data for a site. But because different sites have a slightly different way of displaying data!This article uses Java to show you how to crawl the site data:(1) Crawl the original Web page data. (2) Crawl the data returned by the Web page

Reprint please specify the source!original link:http://blog.csdn.net/zgyulongfei/article/details/7909006Sometimes for a variety of reasons, we need to set the data of a site, but because the different sites on the way the data is displayed slightly different.This article uses Java to show you how to crawl the site data:(1) Crawl the original Web page data, (2) Crawl the Web page

(note is continuous, two paragraphs of text and no white space appears in the picture) 5.2 HTML Edit Control class 5.3 Color marquee control 5.4 drop-down menu5.5 Two-level or multiple-level drop-down menu5.6 A button that imitates the IE menu.(Effects such as rongshuxa.com navigation section) 5.7 status bar, title column dynamic effect (many examples, you can study) 5.8 Double-click, the Web page automatically scroll 6, tree structure. 6.1 Asp+sql V

Before the article also talked about the basic idea of dragging and dragging, the theory is there, that practice, can be applied to where? Below to bring you a drag-and-drop thought to write a small example, for everyone's reference, the general effect of looking at the following figure: It's such a simple drag-and-drop bar, you can understand it as a scroll bar, you can also understand the number of forms to select the control, but also can be und

Reprint please specify the source!original link:http://blog.csdn.net/zgyulongfei/article/details/7909006Sometimes for a variety of reasons, we need to set a site's data, but because the different sites on the way the data display slightly different!This article uses Java to show you how to crawl the site data:(1) Crawl the original Web page data, (2) Crawl the Web page