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1. Constructors and prototypes 1.1 three creation methods of objects Literal mode var obj = {}; new keyword var obj = new Object(); Constructor mode function Person(name,age){ this.name = name; this.age = age; } var obj = new Person('zs',12); 1.2 static members and instance members 1.2.1 instance members Instance members are mem ...

In this article, we are still based on e-commerce management system. This time, we analyze the overall layout of the interface and apply the layout container and sidebar components of ElementUI, catalogue Overall layout of interface (Container component is adopted)   Menu component   First level menu Secondary menu Overall lay ...

Nail H5 micro application downloads files in IOS The latest project is nailed H5 micro application. This project is an HR system project born on PC. there are processes such as resignation, leave and employment confirmation. When the resignation process is initiated, attachments need to be uploaded. Attachments can be uploaded to excel, word, ...

What is positioning? location: Set the box in a certain position, so positioning is also placing the box, and move the box according to the positioning method Positioning = positioning mode + edge offset Location mode is used to specify how an element is located in the document. The edge offset determines the final position of the element. ...

Learning video: Introduction to java basic video tutorial, zero foundation self-study of Java, preferred introduction to Java for dark horse programmers (including Java projects and Java real problems)_ Beep beep beep_ bilibili catalogue  * 1, Demand analysis: simulate the function of shopping cart module   1. Console         wh ...

New HTML5 document 1 - header information The header area of HTML document stores the basic information of various web pages. These information are mainly used by browsers and will not be displayed in web pages. In addition, search engines will also retrieve these information. Therefore, it is very important to pay attention to and set header ...

HMTL + CSS 1. Advantages of div + CSS layout The code is simplified, the structure is separated from the style, and it is easy to maintainThe amount of code is reduced, a large amount of bandwidth is reduced, the page loads faster, and the user experience is improvedIt is more friendly to SEO search engine, and H5 has added many semantic ta ...

catalogue 1, List label 1. Unordered list 2. Ordered list 3. Tessellation of lists 2, Table label 1. Role of table labels 2. Table label 3. Merging of cells 4. Table border properties: 5. Filling properties of the table: 6. Spacing properties of cells: 3, Form 1. Use 2. Label (1) Form label: (2) Form control: 1, List label 1. ...

1, v-for 1. Update monitoring In general, changes in data will lead to v-for update, but in some cases, such as array method filter, it will return a new array, or directly change the value of the array in a literal way, which will not lead to v-for update. In such cases, reassignment or this.$set() or Vue.set() methods can be used // v-for ...

vue summary VUE Foundation 1, What is vue The official concept is that Vue (similar to View) is a front-end framework for building user interfaces Build user interface It is very convenient to fill data into html pages with Vue frame Framework is a ready-made solution. Programmers can only abide by the specifications of the framewor ...