I’m trying to make one-to-many relationship database with Mongoose and GraphQL. Whenever I insert the data to GraphQL mutation argument, I will get [Object: null prototype] error. I notice the object will have [Object: null prototype] in front of it when I tried to console.log for debug purpose. I have …
Tag: javascript
Vue js with simple JavaScript Vue is undefined
I am trying to understand how vue works. To do that I simplify it as much as possible, hence no webpack no CDNs or any other packages (unless its a necessity). So, Came up with this but trying to inject a simple a variable into html gives vue is undefined error. *vue.js file is taken from npm vue package. Ans…
onchange property doesn`t work in javascript
I want to launch the function test() if the user inputs something in the html input field with the id=”sc1dc1″ (without using the “onchange=” directly in HTML). What is wrong? HTML: Javascript: Answer The thing about onchange events is that they only fire when the <input> field l…
Invalid date when parsing with locale it
I need to parse a date in the “it” locale with momentjs, and I’m doing this What I get is “invalid date” and I don’t understand why. Can you help me? Using the “en” locale (with the date written as 12/20/2018) all is ok Answer The below snippet will accomplish w…
JS Array.prototype.filter with Array extending class constructor call
I have a Array extending class A which I want to filter. It seems like the constructor gets called another time with just 0 as parameter. Why is that? Here is an example showing the problem: Which logs: Where is the 0 comming from? Answer Array.prototype.filter is returning a new (array) value. That value nee…
Write javascript array elements to file
I am trying to have a node js script write some coordinates to a csv file for use in a Newman CLI script. I have the following: I have been looking through and trying numerous different tutorials/code snippets regarding writing the array elements from arrLatLon to an output file on my local machine, but none …
How to hide text in navbar elements on different screen size Bootstrap 4
How do I hide elements of a navbar in bootstrap inline rather than creating a new element for each screen size. I tried using a span but that just causes the line to wrap. The example below is the only solution I have found to hide and show based on screen size. But I do not like the code it
Create object from another one using filter function
I’m trying to create an array of objects using an array of objects. My first array is like that : And I want to create an object list with only an id, a name and a task. This is what i do actually, but it doesn’t work : The ListModel object is : Answer The filter() function is more-so utilized
How is it possible to add values to a JSON array in Javascript/angular?
I have these initialized in my file, which is in an angular app: After doing some processing which is working to check the current player, I want to create an array for each player. Each player’s array gets added individually. First player A, then B, and so on until the last player in the names array ge…
Getting seconds from a timer function to my view
I want to get the minutes and seconds from the timer in my template to my view. I already tried different approaches with an ajax.post request but it didnt really work how I wanted it to be. Here is my template: Now I want to get the minutes and seconds to my view as a POST request after clicking on