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Add Function to Prototype with Javascript

Published on Jun 26, 2022

In some of my more recent posts about How to compare arrays in Javascript and Format Numbers as Currency with Javascript I have been enjoying adding them as extension methods to simplify their usage.

Honestly, I've always been afraid to do it because it seems "hard". Now that I've done it once though, it is now becoming second nature. I really can't believe I haven't done this before because I absolutely love adding string extensions when I developer with C#.

Let's take a look at some code to add a function with prototype using Javascript. In this first example I will add it to the Javascript Array Prototype:

JavaScript String replace()

Published on Jun 25, 2022

Introduction to the JavaScript String replace() method

This article will discuss the JavaScript array replacement of a new string using a function to replace all occurrences of a string or sentence with the string you want to replace.

The specified type member is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported

Published on Jun 21, 2022

This morning I was writing an Entity Framework query where I was selecting an object from a model called Invoice to a table called NetsuiteErrorLog. This previously used to be an actual relationship in my EDMX; however, I needed to do some refactoring and remove the direct foreign key from Invoice to NetsuiteErrorLog. When I did this I needed to add a new partial property that mimicked this relationship. When I did that and tried to perform my query I received the generic error:
The specified type member 'NetsuiteErrorLog' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported

Group an array of objects by key with Javascript

Published on Jun 19, 2022

I feel so privileged being able to use Linq group by statements when I'm working in C# to quickly and easily group a list of objects; however, when it comes to Javascript, it's not quite so easy. Let's solve that today by creating a new groupBy Array prototype function that leverages the reduce function.

Preview an image before it is uploaded

Published on Jun 19, 2022

This is something I haven't really thought of before, typically when I implement a file upload for an image the preview happens after. However, there is actually a really simple way to get a preview of it before the actual upload happens to the server. Let's take a look at an example.