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Three.js to achieve parabolic dynamic flow effect Old rules, let's first look at the final effect. This effect may be used in the demonstration from the beginning to the end of the aircraft route, the demonstration of missile launch trajectory effect and other scenes. After mastering the idea, the effect is very simple. There are actually two ...

variable target Be able to say the main role of variablesCan write the initialization of variablesBe able to say the naming convention of variablesCan draw how variables are stored in memoryBe able to write cases of exchange variables catalogue Variable overviewUse of variablesVariable syntax extensionVariable naming conventionExchange vari ...

1, Foreword    this article will mainly explain the basic theory of Web automated testing in Python, the construction of Webdriver environment and some basic common operations of automated testing. In addition, there is a portal of a series of articles below, which is still being updated. Interested partners can also go to chec ...

1, First acquaintance with ES6 es6 compatibility view 1. let and const let, like var, is used to declare variables whose values can be changedconst is used to declare constants. Once a constant is initialized, it cannot be re assignedconst must be initialized when declared let name = 'toot toot' let age = 18 const sex = 'female' ...

Vue summary (VI) -- Vuex advanced preface This blog is a further summary based on the previous blog. So I suggest you take a look at the last blog first. Previous: Vue summary (V) -- Introduction to Vuex The main contents of this blog include: gettersmapState and mapGettersmapMutations and mapActionsCase: multi component data sha ...

1, Pain points of uploading large files at the front end 1. Too many files lead to tight bandwidth resources and reduced request speed; 2. If the service is interrupted, the network is interrupted and the page crashes during the upload process, the file may be uploaded again. 2, Analysis of pain points The front end selects the file and uplo ...

When doing data analysis, we often hear the concepts of year-on-year and month on month. When publishing statistical data, enterprises and organizations usually like to compare the previous historical data with the year-on-year and month on month data to illustrate the changes of the data. For example, the Bureau of Statistics announced that in ...

A simple cool special effects page (html+css+js including source code) --- 3D image demonstration preface1, Page effect display2, Function description 1. Open the page and all pictures will rotate automatically2. The size and spacing of pictures can be changed as the mouse wheel scrolls3. Press and hold the mouse anywhere on t ...

This example is based on Vue JS and mint UI implementation. catalogue 1, Creation of database 2, Connection between back-end interface and database 3, Front end code implementation 1. Relevant codes of registration page 2. Effect of registration page 3. Relevant codes of login page 4. Landing page effect 4, Demo login 5, Project fil ...

catalogue Chapter 1: Vue core 1-1. Introduction to Vue1-2.Vue official website Guide1-3. Build Vue development environment1-4. First meet Vue1-5. Template syntax1-6. Data binding1-7. Two ways of writing el and data1-8.MVVM model1-9. Data proxy 1-9-1. Review object Defineproperty method1-9-2. What is a data broker1-9-3. Data broker in V ...