Programmer Group

instructions Directives: special attributes with v-prefix. For example, the v-model in the entry case represents two-way binding. Interpolation expression Interpolation: used where vue instance data needs to be displayed You can invoke the data properties and functions of the instance in the interpolation expression. Curly bracket ({}) Fo ...

  welcome to the front end technology camp! If you are also a front-end learner or have the idea of learning from the front-end, follow me to attack the front-end from scratch.   we are committed to introducing front-end knowledge and our own shortcuts as detailed and concise as possible, which is also a record on the way of learning. ...

During the interview, you will inevitably encounter the problem of asynchronous execution sequence. Let's have a look. Content continuously updated ～ Asynchronous and synchronous concepts javascript language is a "single thread" language. Operations that can change the normal execution order of programs can be regarded as asynch ...

String operation method 1. Convert to string type toString() (1)var num=110; var n=num.toString(); //"110" (2)var num=111; var n=String(num); //"111" (3)var num=112; var n="" + num; //"112" 2. String segmentation returns a new array split() (1)var str="qingchenghuwoguoxiansheng,woaishenghuo,woaiziji"; var arr1=str.split ...

webpack is a popular and powerful tool for packaging JavaScript modules. It allows developers to construct code and assets in an intuitive way, and use simple require statements to load different types of files as needed. When built, it tracks code dependencies and packages these modules into one or more packages loaded by the browser. In the ...

    First of all, we need to make it clear that setState is not an asynchronous method, which is very similar to the reason for asynchrony: there is a deviation between the call order of hook () and synthetic events and the execution order of setState, resulting in an asynchronous presentation form, resulting in the illusion of asynchro ...

When I was a little white, I read a lot of documents about Promise. I never understood what the pain point of asynchronous operation means It wasn't until I turned to all the Chinese documents on the first page of Google that I had an epiphany. In fact, it was the simplest and rudest to understand from his English literal meaning This is a prom ...

catalogue 1, Get method of element Get under document id acquisition Class name acquisition (className) Tag name (tagName) Custom acquisition range   2, Mouse event Onmousesave mouse away   onmouseover mouse in   / onmouseout mouse out   And   onmouseenter   Mouse entry  / onmouseleave   Mous ...

catalogue 1.1 concept (based on vue2) 1.2 vue/cli scaffold 1.2.1 create project startup service 1.2.2 explanation of project directory (can be omitted) 1.2.3 custom configuration 1.2.4 eslint 1.2.5 single vue document 1.3 interpolation expression 1.4 MVVM design pattern 1.5 Vue instruction (key points, remember with a small book) 1 ...

js consists of web API, DOM, get element, ID get element, tag name get, HTML5 new get, quertSelector, document.querySelectorAll, get special elements (body, HTML) Composition of JS API API Application programming interfaces are predefined functions designed to provide applications and developers with the ability to access a set of programm ...