Tag：Front end
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HTML front-end learning (7) — BOM operation of JavaScript learning
BOM operation of JavaScript learning Introduction to BOM operation Current page operation Current page height and width Open website Close current page Window sub object History object Location object Spring frame Warning box Confirmation box prompt box Timer related Triggered in a few seconds The cycle is triggered after a period of time Introduction to […]
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The common methods of array objects in native JavaScript are filter(), sort(), join(), push(), pop(), unshift(), shift(), reverse(), concat()
Today, when learning Vue, I operated on the array. I used filter (), sort (), which I haven’t used for a long time. I forgot to have this thing (- | – |). I took this opportunity to review the document again to learn and record the method of array.Data processing is generally operated by […]
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The pits that useeffect walked through
Write in front in react, there are two components: function component and class component. One of the differences between the two is that class components have a life cycle, while function components do not inherit react Component, so the function componentNo life cycle。 So you check the documentation and find that using useeffect can […]
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(WEB front-end daily practice) make a colorful animation of a small ball following the mouse with JavaScript / Doge / Doge
On April 30, (daily practice) JavaScript case, mouse follows colorful special effects When the mouse moves on the page, it generates a colorful small ball to move, and the generated position follows the mouse position. After a period of time, the small ball disappears. Similar special effects: it has the function of highlighting the position […]
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Initial react: how do we create a react application
Article catalogue Understand the basic concepts of react Describe the UI using components Managing state using state and props Understanding the essence of JSX grammar Create a react application using scaffolding tools Actual combat: send request and display data in component Summary Understand the basic concepts of react React itself is actually a very simple […]
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Decoration mode of common design mode of golang
Presumably, as long as you are familiar with Python, you will not be unfamiliar with decoration mode. This kind of decorator that Python supports natively from the syntax greatly improves the application of decoration mode in Python. Although the decoration pattern in go language is not as widely used as in Python, it also has […]
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Ajax for web development
Today, I will share with you the usefulness of Ajax technology in combination with several cases Let’s first understand what AJAX is Ajax: Technology of refreshing only partial pages The full name of AJAX is asynchronous JavaScript and XML AJAX is not a new programming language, but a new way to use existing standards AJAX […]
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Front end learning route (front end zero basis)
Hello！ I’m a programmer, rice noodles. At present, I am engaged in full stack development in a listed company of the world’s top 500. I once served as the leader of the front-end group of more than 10 people. I like to share various front-end technologies and have been helped before, so I will also […]
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Master each () and $. Of jQuery traversal operation Each () [easy to get started]
You may be curious: “ah, when I first learned jQuery, didn’t I remember learning an iteration? Oh, yes, it’s implicit iteration. That’s a simple operation of traversal, so why learn traversal???” Now let me explain to you curious babies. Let’s think about what we learn implicit iteration for first? Is it to give the same […]
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No, no, the blogger actually used 1.6W + words to say that JDBC is connected to MySQL, and it took several nights to write it
Hello ~ Hello everyone, this time let’s see how JDBC connects to MySQL catalogue 1、 Beginning 2、 Introduction 1. JDBC concept 2. Functions of JDBC 3. Common interfaces and classes of JDBC 3、 Database creation (MySQL) 1. Connect to MySQL (1) . registration driver (2) , get connection (3) , get executor connection (4) Execute […]
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Cache architecture in distributed system
Caching is an old-fashioned technology. In the case of high concurrent reads, it can be described as a silver bullet against traffic for read services. Three sharp tools for high concurrency: caching, current limiting and degradation. Today, let’s talk about caching. For caching, my understanding is to make the data closer to the user, in […]
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Instructions for installation and construction of hare online tool system v1 0 version
Recently, many netizens have consulted about the installation and construction of hare online tool system, so take some time to sort it out today and share this installation tutorial with you. First download the hare online tool system, but this is only for the early v1 0 version. I don’t have the latest version, so […]