Programmer Think

A long time ago, I met such a demand in my work. At that time, it was also a long time entanglement, but also google did not meet the appropriate demo. Today, I specially studied this problem, so I made a simple demo to realize the real-time preview effect of uploading pictures locally. Its standard browsers (firefox,chrome, IE10 and other bro ...

As mentioned in the last book, variables, operators, branching structures, loops and nested loops are included in JS. This time, Ben K will talk to you about BOM, DOM and events in JS. I. "Huaxin Big Radish" - BOM 1. Shocked, Why did FFF Group Lift a Torch on BOM--Brief Introduction to BOM BOM(Browser Object Model) refers to the brows ...

Foreword: This is the author's own understanding and arrangement after learning. If there are any mistakes or doubts, please correct them and I will keep updating them. 　　 getBoundingClientRect() The simple way to determine the size and location of an element is to use obj.getBoundingClientRect(). The obj.getBoundingClientRect() method return ...

HTML5 web storage, a better local storage than cookie s. What is HTML5 Web Storage? HTML5 enables users to store browsing data locally. Earlier, cookie s were used for local storage. But Web storage needs to be more secure and fast. These data will not be saved on the server, but they are only used for users to request website data. It can also ...

background Tenda wireless router used in dormitory in university is always maintained by me. I think it's necessary for everyone to manage their own wireless router easily. So I set up the design and development of Tenda wireless router management software based on A ndroid platform, and made an A for Tenda wireless router. Ndroid App. As it ha ...

Ajax Foundation ajax: no refresh data read, read information on the server HTTP request method: GET: Used to get data, such as browsing posts ajax.judgeXmlHttpRequest('get', 'index.php', function(data){ alert(data); //This is the data returned by the server }) POST: Used to upload data, such as user registration var dataJson = { nam ...

Case 1 Grab objects: Sina National News ( http://news.sina.com.cn/china/ ), the title name, time, link in the list. Full code: 1 from bs4 import BeautifulSoup 2 import requests 3 4 url = 'http://news.sina.com.cn/china/' 5 web_data = requests.get(url) 6 web_data.encoding = 'utf-8' 7 soup = BeautifulSoup(web_data.text,'lxml') 8 9 for ...

Connect module of Node learning and the use of its Middleware I. Overview Connect It is a tool set based on HTTP server, which provides a new way to organize code to interact with request and response objects, called middleware. middleware In fact, it is a simple JavaScript function, which not only handles req and res requests, but ...

In order to support the direct request of web browser ajax, project development involves cross-domain requirements. Through learning, we have a more in-depth understanding of cross-domain. Now let's sum up: 1. Cross-domain description Cross-domain refers to the inconsistency between the domain of requests and services, the impact of browsers an ...

If you want to get a specific style attribute value of an element 1. Element. style. Attribute name We need to write the style of the element on the in-line style (it doesn't work in the style sheet) console.log(box.style.height)  ->null In real projects, this approach is not often used because all styles cannot be written in order to get va ...