Category：Program
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Time：2020-10-27
Explain JWT JWT is a string, which is encrypted and verified by three parts. Token based authentication can replace the traditional cookie + session authentication method. The three parts are as follows: header.payload.signature Header part The header format is: { “typ”:”JWT”, “alg”:”HS256″ } This is a JSON string. Both fields are required,algField specifies the buildsignatureThe […]
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Time：2020-10-27
0x001 overview This chapter talks about more than onereducerHow to deal with it andleduxSupport more than onereducer 0x002 unsealingreducer import {createStore, combineReducers} from ‘redux’ const ACTION_NUM1_INCREMENT = ‘ACTION_NUM1_INCREMENT’ const ACTION_NUM2_INCREMENT = ‘ACTION_NUM2_INCREMENT’ const num1 = (state = 0, action) => { switch (action.type) { case ACTION_NUM1_INCREMENT: { return ++state } default: { return state } […]
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Time：2020-10-27
In order to understand the functions of a gray publishing system, I think it is necessary to understand the concept definition and gray publishing process of gray publishing, clarify the purpose of gray level from the concept and process, and sort out the places that system tools can support in the process. Then, it is […]
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Time：2020-10-27
–At the end of the paper, video tutorial + source code is attached 1. Constructor new PromiseAn executor executor is required to be passed. The executor executes immediately (synchronously). The executor accepts two parameters, namely, resolve and reject. Promise has three states: -Pending: initial state, which is neither successful nor failed. -Completed: successful status, which […]
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Time：2020-10-27
NPM cool library, two minutes a day, learn about a popular NPM library. Yesterday we learned how to use promise to manage asynchronous tasks, but the es2015 standard promise object implementation interface is very limited, only containsPromise.all() Promise.race() promise.then() promise.catch()For example, we can’t directly judge whether a promise object has been completed. q Q is […]
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Time：2020-10-27
In addition to Vue related technologies, react technology stack has also become a necessary technical point for front-end development engineers, whether it is job needs or interview bonus points. Next, I will develop a complete set of react family barrel project development environment from zero, and provide it to peer partners who need to watch […]
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Time：2020-10-27
This is a battle without gunpowder smoke. What we ordinary people can do is to stay at home and wait for the epidemic to end. To those who risk their lives to rescue patients, salute! Effect preview Press the “click preview” button on the right to preview on the current page, and click the link […]
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Time：2020-10-27
Reference articles:https://blog.csdn.net/qq_35493664/article/details/105195549https://juejin.im/post/6844903974647103496#comment
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Time：2020-10-27
stayLast articleList view nesting listview scrolling We have done questionnaires and test papers, and know that the list of topics includes: the topics of large questions, the topics of small questions, and the options of small questions. To do this layout, we need to use many components. First, the listview displays the list of topics […]
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Time：2020-10-27
wx.canvasToTempFilePath As we all know, wechat canvas needs to call this interface to generate images. If this interface wants to generate high-definition images, it needs to solve the problem of font blurdestWidth * dpr。 The width and height of the original canvas is too largedestWidth * dprThe width and height of destwidth will be too […]
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Time：2020-10-27
I have been using laravel for a long time, and I have used many versions. The following code is collected in daily projects and shared as notes. I hope it will be of some use to you.Note: the version is not marked. If there is any incompatibility, you can fine tune it. verification I’m not […]
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Time：2020-10-27
Problem description In “ThinkPHP realizing sms verification and registration”, Xiaobian not only records the implementation method of SMS verification code, but also records the implementation method of image verification code.When the back-end project and front-end project are deployed to the server, everything is normal; after the back-end project is deployed to the server and cross […]
