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leaflet is widely used in the development of two-dimensional gis, and I am also engaged in gis related development recently. While these two days are not very busy, quickly record the development process of these two days as a reference for future work. General steps for adding marker to leaflet: The figure above shows the general steps of ...

1, Understanding software racks 1.C/S 1) C client / S server 2) Features: a:C/S software usually needs a specific client to use b: It can communicate through any protocol c: The client of C / s software has the ability of data processing and storage, and can distribute the calculation and data of application software in customer service a ...

Chapter 01 - front end core technology - HTML5 Foundation Learning objectives Understand what HTML isMaster the concepts and key points of HTML tags and elementsMaster the key points of using common HTML header elementsMaster the key and difficult points of HTML title, paragraph, text, picture and other typesettingMaster the key points of usi ...

9. JavaScript overview 1, JavaSript knowledge training - Basics 1. JavaScript is a scripting language that runs on (). B. Client 2. JavaScript code is usually embedded into html documents with () tags. D,script 3. The only tool for writing JavaScript programs is a plain text editor. B. Error 4. After defining a variable with var, if no ...

*This article was contributed by the developer of apiccloud at the end of the seaWhat is a window? A window can be understood as a basic carrier of screen content. Navigation, pictures, videos, text, etc. can be placed inside to form a screen content.Different windows form an APP. For example, the shopping APP has different windows such as [hom ...

preface I learned about canvas briefly before, and now I will learn about svg briefly, so as to enter a door for future work svg learning tutorial: Rookie tutorial For basic learning, you can see the rookie tutorial. If it is more complex, you can find some svg libraries Recommended articles: Ruan Yifeng SVG image tutorial svg SVG means Sc ...

Create data Here is the biggest difference between Vue2 and Vue3 - Vue2 uses option type API compared with Vue3 synthetic API The old optional API divides different attributes in the code, such as data, computed, methods, etc; The new composite API allows us to use methods to split, and use attributes to share compared with the old API, so th ...

prefaceToday is December 27, 2021. A few days ago, the low code launch platform developed by our insurance team was finally launched. It took about four months from product planning to launch. This article does not introduce the concept of low code in detail, but directly introduces the conception process of the product from 0 to 1 in the R &am ...

Requirements: There is a position size picture. Now you need to get a picture of the specified size according to the original picture, and the obtained picture should conform to the proportion of the original picture, that is, after the picture is obtained by equal scaling on the basis of the original picture, you can cut it, so as to ensure t ...

1, Positioning 1.1 positioning and stacking order z-index When using a positioning layout, boxes may overlap. At this point, you can use z − i n d ...