Programmer Group

Learning objectives: Be able to manipulate jQuery attributes, jQuery elements, and jQuery element size and position 1.1. jQuery attribute operation jQuery has three common attribute operations: prop() / attr() / data(); 1.1.1 element intrinsic attribute value (prop) The so-called element intrinsic attributes are the attributes of th ...

(1) let command Basic Usage ES6 added a let command to declare variables. It is used similarly to var, but the declared variable is valid only within the block of code in which the let command resides. { let a = 10; var b = 1; } a // ReferenceError: a is not defined. b // 1 In the code block above, let and var are used to decla ...

Learning objectives: Ability to delete nodes using the removeChild() method Ability to dynamically generate form cases Ability to register events for elements using traditional and monitoring methods Ability to say three stages of event flow execution Ability to get event objects in event handlers Ability to cancel default beha ...

HTML direction Call system functions Use < a > to quickly call the mobile device's three communication functions of phone / SMS / email, and use < input > to quickly call the mobile device's Library / file. These functions facilitate the interaction between the page and the system. The key is that the call format must be accurate ...

Introduction to Express Node (official name: Node.js) is an open source, cross platform runtime environment. With it, developers can use JavaScript to create various server-side tools and applications. This runtime is mainly used outside the browser context (that is, it can run directly on the computer or server operating system). Accor ...

Tips: Before creating a project, you should select the development language. The author uses Java development. If other readers also use java development, you can operate together. For example, links to other development manuals are as follows: Development using JS language (traditional code mode),Development using JS language (low code mode ...

catalogue 1, Listener introduction Listener introduction What is a listener Related concepts of monitoring mechanism           Introduction to web listener 2, Listen to the lifecycle of domain objects Implementation steps 1. Create a listener and implement the listener interface 2. Add listener information 3 ...

prefaceHello, I'm Lin Sanxin. In the most easy to understand words, the most difficult knowledge point is my motto. The foundation is the advanced premise and my initial intention. As we all know, Promise is very important in our development. I think the use level of Promise can be divided into three levels1. Master the basic use of Promise2. M ...

At a certain time, we should also summarize. Four years ago, we did a lot of UI work. At present, we have a lot of contact with development work. In fact, we don't ask people for the landing of the project. We unconsciously learned something and did something in our spare time.There are countless React UI toolkits and libraries today. Facing so ...

1 case description and renderings [case] display hidden password plaintext Case analysis: on the login page, in order to optimize the user experience and facilitate the user to enter the password. Therefore, when designing the password box, there will be an "eye" picture to act as a button function. Click to switch the state ...