Programmer Think

Hooks is just a JavaScript method, but it should be used in the correct way. We provide a linter plug-in to automatically check. Hooks is called only at the top level Do not call Hooks in loops, conditional statements, or nested methods. To be called at the top level of your React method. Following this method, you can ensure that hooks are ...

jQuery video through train from getting started to becoming proficient:         JQuery video tutorial, from introduction to actual combat, interactive actual combat between native ajax and jQuery ajax, easy to understand! Getting started with jQuery jQuery download and import jQuery Download Official website address: jQuery Official A ...

catalogue I objective 1. Want to: Learn front-end knowledge 2. Think: take notes. Next time, you don't need to watch the video. You can quickly recall by looking at the notes directly. II reference resources 1. GitHub website of my own code 2.SIKI College: I refer to this video for practice 3.w3school official website: used as a dictio ...

For the company's product projects, the architecture used is relatively old, and the print plug-in tool is OCX. This has great limitations. You can only use IE browser, which is not even supported by EDGE browser, and you need to adjust the security configuration of IE browser. Based on the above reasons, the project decided to change the prin ...

1, jq dynamic splicing html page Requirements: 1. The page content is not dead 2. Dynamically load page data according to background data realization: Before that, we need to understand the difference between apppend() and html(): Simply put, the append () method is to add an element to the element list, but html () is to replace the data in ...

Front end SEO code specification What is SEO? Search engine optimization is a way to improve the natural ranking of websites in relevant search engines by using the search rules of search engines. SEO refers to the behavior of making reasonable planning from the perspective of website structure, content construction scheme, user interactive c ...

1. The front end realizes the online preview function of pdf files Method 1. pdf files can theoretically be previewed directly in the browser, but a new page needs to be opened. When you only Preview pdf files and the UI requirements are not high, you can preview them directly through the a tag href attribute <a href="Document address"> ...

Author: Dmitri pavlutinTranslator: front end XiaozhiSource: dmitripavlutinThere are dreams and dry goods. Wechat search [Daqian world] pays attention to this bowl washing wisdom who is still washing dishes in the early morning.This article GitHub https://github.com/qq449245884/xiaozhi It has been included. There are complete test sites, materi ...

10. 1 what is ajax? The full name of ajax is Asynchronous JavaScript and XML. It is not a new technology, but an integration of several existing technologies such as JavaScript, XML and CSS 10. Ajax core - XMLHttpRequest The XMLHttpRequest object is the core of Ajax technology and is used to interact with the server. It can asynchron ...

1, $. get() method jQuery.get(url, [data], [callback], [type])Load information through a remote HTTP GET request.This is a simple GET request function to replace complex $. ajax. The callback function can be called when the request is successful. If you need to execute a function when an error occurs, use $. ajax.jQuery.post and jQ ...