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preface Every front-end developer will always encounter some needs related to PDF in his life, but searching online articles is mostly the realization of some functions. It is not easy to obtain a complete scheme that meets his own needs. Based on this, combined with my relevant work experience, I sorted out a set including front-end PDF ge ...

1. Why learn functional programming 1. With the popularity of react, functional programming has attracted more and more attention 2.Vue3 also began to use functional programming 3. Functional programming can abandon this 4. In the packaging process, we can better use tree shanking to filter useless code 5. Facilitate testing, make the code mor ...

Vue3 system introduction and project practice Comprehensive knowledge points + high matching projects, easy entry and in-depth Mastery Chapter 1 a preliminary study of Vue grammar A very classic method is used here: split()Method splits each character of a string object and treats each string as each element of the array reverse()Metho ...

User login authentication is a very common business in Web applications. The general process is as follows: The client sends the user name and password to the serverAfter the server-side verification is passed, save relevant data in the current session, such as login time, login IP, etc.The server returns a session to the client_ ID, which the ...

When learning becomes a habit, knowledge becomes common sense. Thank you for your attention, likes, collections and comments.The new video and articles will be sent to WeChat official account for the first time. Li YongningThe article has been included in github warehouse liyongning/blog , welcome to Watch and Star.prefaceHook Event (Hook Event ...

1, setup 1. It's vue3 0 is a new configuration item in, and the value is a function. 2. setup is the stage where all composition APIs are displayed. 3. There are two return values of the setup function: If an object is returned, the properties and methods in the object can be used directly in the template. (focus!) If you return a renderin ...

preface: During this period of time, a new requirement was encountered during the project iteration. A Pc version electronic signature function was implemented based on react, and pictures were generated and uploaded. So I thought signature_pad And used this plug-in in the project I have to say that the wheels made by others are really fragrant ...

Form field object Form fields include text boxes, multi line text boxes, password boxes, hidden fields, check boxes, radio boxes and drop-down selection boxes, which are used to collect data entered or selected by users Text box Text box is a form object that allows visitors to enter their own content. It is usually used to fill in a ...

1, Node introduction Why learn Node The necessary front-end skills can better learn the front-end framework. Being able to learn more about the Web helps to understand back-end development. What is Node Node.js is a JavaScript running environment constructed by the V8 JavaScript engine based on Chrome. Node.js is not a new language, nor ...

Promise usage review First, let's review what Promise is. Promise is a solution for asynchronous programming, which is more reasonable and powerful than traditional solutions, callback functions and events. Promise is simply a container that holds the results of an event (usually an asynchronous operation) that will not end in the future. Sy ...