Tag:object

  • A text to clarify the context in JavaScript

    Time:2020-9-23

    background This article is part of “in 2019, after reading this one, I will no longer be afraid of the front-end interview” Refer to what I wrote beforeBlogAnd extradata, share it to you, hope to bring some to youInspiration and help。 For reprint, please contact the author for permission. text contextIt is an important concept […]

  • Mybatis framework

    Time:2020-9-23

    Introduction to mybatis Mybatis is an excellent persistence layer framework, which encapsulates the process of JDBC operating database, so that developers only need to pay attention to SQL itself, and do not need to spend energy to deal with complicated JDBC process codes such as registering driver, creating connection, creating statement, setting parameters manually, retrieving […]

  • Restudy on nsstring

    Time:2020-9-23

    Restudy on nsstring Nsstring should be one of the most commonly used data types in OC development. This time, we will make a comprehensive exploration and summary of this type. Nsstring essentially belongs to OC class object, inherits from nsobject, and complies with nscopying, nsmutablecopying and nssecurecoding protocols. Nsmutablestring is similar, except that it inherits […]

  • Make clear the “context” in JavaScript

    Time:2020-9-23

    background This article is part of “in 2019, after reading this one, I will no longer be afraid of the front-end interview” Refer to what I wrote beforeBlogAnd extradataI hope I can bring you someInspiration and help。 For reprint, please contact the author for permission. text contextIt is an important concept in JavaScript. Maybe many […]

  • Springboot — 3 what is mybatis, mybatisplus +

    Time:2020-9-22

    1.MyBatis Official website: https://mybatis.org/mybatis-3/zh/index.html 1.1 what is mybatis? Mybatis was originally an open source project ibatis of Apache. In 2010, this project was migrated from Apache Software Foundation to Google Code and renamed mybatis. Moved to GitHub in November 2013. Mybatis is an excellent persistence layer framework, which supports custom SQL, stored procedures and advanced […]

  • Some problems of file upload form processing in gwa2 Jiwa rabbit Java

    Time:2020-9-22

    In gwa2java, the HTML form of file upload is called “mixed loading of passenger and freight” HTTP request processing. File upload processing is a special application in HTTP web development, which has certain requirements for developers. Whether PHP or JSP is popular, it needs to be handled. Since I really can’t remember how to handle […]

  • Implementation of list page with search box in easyUI (2) — background implementation

    Time:2020-9-22

    This article continues to complete the implementation of background functions, which are based on SSM framework Basic ideas Introducing easyUI resources DataGrid component realizes the loading of initialization list paging data Form is used to collect the search criteria and convert them into JSON objects, which send requests to the background to reload the data […]

  • [issue 016] javase interview questions (16): Reflection

    Time:2020-9-22

    Introduction Hello, I amThe most complete interview question bank in JavaToday’s article is the 16th part of the javase series, which mainly summarizes the JavareflexRelated issues, in the follow-up, will be along the first chapter of the knowledge line has been summed up, to do more! If I can do a hundred days and one […]

  • IOS New Oriental interview

    Time:2020-9-22

    As a developer, it is particularly important to have a learning atmosphere and a communication circle. This is my IOS communication group: 761407670, no matter you are Xiaobai or Daniel, welcome to join us, share bat, Ali interview questions, interview experience and discuss technology, 1. How to cache cell height? What is the implementation principle […]

  • Front end interview ES6 comprehensive summary

    Time:2020-9-21

    Deconstruction assignment of variables Yes in ES6Extracting values from arrays and objects and assigning values to variables is called deconstruction assignment。 As long as the patterns on both sides of the equal sign are the same, the variables on the left will be assigned corresponding assignments. Deconstruction assignment classification: Deconstruction assignment of arrays The elements […]

  • Misunderstanding of promise then chain

    Time:2020-9-21

    1、 The state of a promise object in the then chain has no direct relationship with the state of its previous promise object Namely:var promise2 = promise1.then(onFulfilled, onRejected)In the expressionpromise2The state ofpromise1There is no direct relationship. //Create a promise1 object var promise1 = new Promise((resolve, reject) => { reject(‘Rejected’) }) //Create a PROMISE2 object and […]

  • Analysis of block closure

    Time:2020-9-21

    Analysis of block closure In short, block is an object that encapsulates the function and its context. It can be regarded as an anonymous function in C + + or a block. Block type writing method: Return value + (^ block name) + (parameter) = ^ (parameter) {content} As follows: int (^myBlock)(int a, int b) […]