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Meaning and classification A form consisting of data itself or operational data connected by operators Example: 1 + 1 Where 1 and 1 are two operation data classificationdivideArithmetic operator+,-,*,/,%,+ +,- -Comparison operator>, <, > =, < =, all equal (three equal signs), not all equal (! = =)Logical operatorLogical ...

1.js is an interpretive programming language running on the client 2. Functions of JS: Some logical implementations used to complete front-end and back-end interaction and increase user experience. 3. A web page is composed of three parts: structure (HTML/HTML5), presentation (CSS/CSS3) and behavior (javascript) 4. The core of front-end dev ...

Function combination Concept of function combination: if a function needs to be processed by multiple functions to get the final value, we can combine these intermediate process functions into a new function at this time. Functions are like pipelines of data. Function combination is to connect these pipelines and let the data pass through ...

DOM DOM and SAX W3C has developed a set of standard interface specifications for writing XML analyzers - DOM. In addition, XML_ According to the requirements of the application, the members of dev mailing list also spontaneously defined a set of interface specification for operating XML documents - SAX. These two kinds of interface specific ...

Why use this: function identify() { console.log("Hello,I'm " + this.name); } let me = { name: "Kyle" }; let you = { name: "Reader" }; identify.call(me); // Hello,I'm Kyle identify.call(you); // Hello,I'm Reader This simple chestnut can reuse the function identify in different objects without writing a new function for each object. ...

1. Pros Verification 1. props node of object type Each prop can be checked for data type using props nodes of object type. Disadvantages of using props nodes of array type: you cannot specify a specific data type for each prop. 2. props authentication scheme 2.1 Basic Type Check Specify the underlying check type directly for the prop prop ...

egret p2 Physical Engine Learning Record p2(physics) download address: https://download.csdn.net/download/qq_31189489/79552684 Introducing a physical engine Download p2 Physical Engine Package All files in the \physics\libsrc\binphysics directory are copied to the root directory/. / p2Physics directory Modify the project root config ...

1. What is JavaSpript 1.1 Overview javaSpript is one of the most popular scripting languages in the world A qualified backend must be javaScript proficient 1.2 History Introduction: https://blog.csdn.net/kese7952/article/details/79357868 ECMAScript: A standard that can be understood as javaScript The latest version has reached es6~but mo ...

create objectFactory ModeExample: function createPerson(name, age, job) { var o = new Object(); o.name = name; o.age = age; o.job = job; o.sayName = function () { console.log(this.name); }; return o; } var person1 = createPerson('Zhang San', 20, 'actor'); console.log(person1); ...

Vue3 study notes I haven't seen the relevant knowledge of vue3 systematically before. I met the first Spring Festival holiday just more than a month after I joined the job, so I saw the relevant knowledge of vue3 during this period. Otherwise, the project is too hard to do Vue3 has two ways to create a project Scaffolding Install via vite ...