Programmer Think

1, Express introduction 1. What is Express Express is based on node JS platform, a fast, open and minimalist Web development framework. The role of ExpressExpress and node JS is similar to the built-in http module, which can help developers quickly create a Web server. ExpressExpress is a popular node based The Web application develop ...

The method of clicking the jump anchor often appears in the project, such as giving an a tag a href = "# anchor", and then giving an id = "anchor" to the anchor to jump, so as to realize a simple jump, but in this way, an example such as www.geekjc.com will appear behind the url address bar COM / # anchor, and then you click ...

Template grammar An instruction is a special attribute with a v-prefix. The attribute value of the directive is expected to be a single JavaScript expression Text Rendering {{}} syntax const app = Vue.createApp({ data() {return { msg: 'Hello Vue3' } } }) const vm = app.mount('#app') v-text instruction and v-html instruction <div v-h ...

backgroundThe company's business problems need no more elaboration. The general demand is to need a breakpoint continuation functionThe company's file storage is used amazon s3 , this is a general-purpose file storage, similar to Alibaba cloud oss. A file can be regarded as an object and can do some operations for file objects. amazon s3 is a s ...

Promise introduction: Promise is a solution for asynchronous programming. ES6 writes it into the language standard, unifies the syntax, and provides promise objects natively. Promise is simply a container that holds the result of an event (usually an asynchronous operation) that will not end in the future. Syntactically speaking, promise is a ...

catalogue design sketch Blind spots encountered Source code design sketch The functions of color matching, adjusting clarity and changing color are realized     Blind spots encountered  1.< Label > is generally shared with < input > advantage: The label text is not only visually associated with its ...

conditional rendering You can use wx:if = "" to determine whether to render the code block <view wx:if="{{flag}}">No rendering</view> <view wx:if="flag">Render</view> <view wx:if="">No rendering</view> <view wx:if=" ">Render</view> data: { flag: false, }, You can also use wx:e ...

preface In vue, there are no more than three kinds of component relationships: Components need to communicate. In development, common communication methods include vuex, eventBus, props and emit, $parent and $children. In addition, there are also provide and inject, $attrs and $listeners. 1, vuex I believe you have used this a lot. Let's br ...

Sort array collapse array de redo callback function Bubble sorting significance It is to adjust an out of order array into an ordered array through the execution of code Logic: ​ 1. Traverse the array, compare two by two, and move the relatively large number backward ​ 2. After traversing, the result is that the largest number must be a ...

NodeJS backend development 08 log using log4js What is a log? Like keeping a diary, the log is printed out by the program, recording when and where events occurred within the program. This article is only for use learning. If you want to have a deeper understanding of log management and analysis, you can see = > This complete guide to log ...