Users frequently want the ability to upload files to a website. If you are using MVC and Bootstrap, you know that the normal file upload control does not look like the rest of your bootstrapped controls. In this blog post, you are going to learn how to modify the default look and feel of the file upload control to make it match the rest of the Bootstrap-styled HTML.
I am constantly asked by desktop developers how to make the transition to web development. Web applications are almost as powerful and as fast as desktop applications these days. There are no installation hassles as web applications reside in just one place: on your server. The user simply navigates to their application's starting point on their browser and can immediately start working. In this blog post, I provide you with guidance on how experienced developers can get started with web programming. I am not going to go in-depth into each technology and tool. Instead, I will introduce you to terms, technologies, and tools needed for web development, and provide you with links on where you can learn more about each.
In the last several blog posts, you worked with a very flat document structure. However, in a more real-world scenario you may have a more complicated JSON object with several nested objects. Working with those types of objects requires you to query and index data slightly differently. This blog post shows you how to create a complex document structure and query that data.
The last four blog posts have introduced you to working with a PouchDB database. You learned to modify documents one at time, in bulk, and learned to query the data within that database. In this fifth part of our ongoing series on PouchDB, you learn to use reduce queries to provide summary data such as the sum or average cost data, minimum and maximum, and how to calculate an average of cost data.
In the last three blog posts of this series, you created a PouchDB database and modified documents within it. You learned to search for documents within the database using allDocs() and find(). In this fourth part of our ongoing series on PouchDB, you learn to use map queries and the query() method.
In the last two blog posts, you have been introduced to the PouchDB NoSQL database. You learned to create a new database, modify documents within that database, and retrieve documents using the allDocs(). Now that you have inserted several documents into your PouchDB database, you might wish to retrieve documents based on data in fields other than the _id property. In this third part of our on-going blog posts on PouchDB, you learn to use the find() plug-in to perform queries on any property in your documents.
As more and more users interact with web applications on their mobile devices, it is becoming increasingly important for us to allow them to work offline. There are many cases where users need to work offline, such as on an airplane, in a remote location where there is no cellular access, or perhaps on board a large ship where Wi-Fi is not available. If you can store data local to your web application, the user can continue to work even without a connection.
Sometimes, you may need to upload files to your server via an Angular application. There are a few different methods you may use. Today, I am going to present a method that works well for small files up to about two megabytes in size. In this blog, you build two projects: a .NET Core Web API project and an Angular project. You build these two projects from scratch using the Angular CLI, .NET Core, and Visual Studio Code editor.
Have you ever need to display your user's location on a map in your web application? HTML 5 adds a geolocation object to help make locating the current user's latitude and longitude quick and easy. Once you have this information, you can use a map API such as Google Maps or Microsoft's Bing Maps to display that latitude and longitude on a graphical map. This blog post explores how to use this new object to get a user's current position.