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Basic noun concept Literal Digital area quantity Numbers are divided into three types in js: decimal, octal, and hexadecimal example alert(52)  // All the numbers we see in the browser are decimal alert(015) // An octal value starting with 0 will be converted to hexadecimal by the browser alert(0x18) // Hexadecimal numeric represent ...

event 1. Introduction We can often see such operations on the website. When we click a button or perform relevant operations on the browser, the page will respond with our operations. Then these operations performed on the browser window or web page through the mouse or button are events. If a piece of program code is bound to an event, as lo ...

JavaScript details - Lao sun Course objectives: JavaScript introductionCombination of HTML and JavaScriptUse of JavaScriptDOM operationBOM operation 1. Introduction to JavaScript Although java is used as the prefix, the relationship between java and javascript is like the relationship between wife and wife cake. There is no relationship of ...

1, Dynamically create elements 1. Native js create node document.createElement(); Note: create element node document.createTextNode(); Note: create text node 2. jQuery create node html(): set or get content Get content: the html() method does not give parametersSetting content: parameters of html() method $('#btnHtml1').click(fu ...

HTML5 final assignment: environmental protection website design - environmental protection - environmental equipment (5 pages) HTML+CSS+JavaScript environmental protection and environmental optimization Common web design topics include individuals, food, companies, schools, tourism, e-commerce, pets, electrical appliances, tea, home, hotels ...

Wechat official documents 1. Use the official account number and authenticate the developer, or apply for the test number. be careful: Debugging in WeChat developer tools must first become official account developers, and can be configured in the background of WeChat official account. Location: The official account background > settings an ...

Realization of video barrage with canvas As usual, first look at the renderings, and then study happily~ What is canvas? Canvas (canvas) can use Javascript to draw graphics and images in web pages. Basic structure: <canvas id="" width="" height=""></canvas> Width: defines the width of the canvas Height: defines the heig ...

Hello, ladies and gentlemen. Today I share another practical article with you. I hope you can like it. Appetizer Recently, I received a new demand to upload about 2G video files. I tried it with the OSS of the test environment. It takes more than ten minutes to upload. Considering the company's resources, I resolutely gave up the scheme. Whe ...

IntroductionJavaScript WebGL draws a face Then I thought I could try something more complex. Unexpectedly, there was a problem when setting the color.OriginMy GitHubSet colorIn the previous examples, a single color was set, but each vertex can have its own color information.be based on Draw triangle There are mainly the following changes:dataVe ...

1. What is data Data is something stored in memory to represent specific information. In essence, it is 010101 Characteristics of data: transitive and computable Everything is data Target data for all operations in memory: Arithmetic operationLogical operationassignmentRun function Note: what data can do depends on the type of data 2. ...