I am trying to check if the iframe src has been already added the first time so that it does not load it again in the second time. The iframe is activated with the function given below, I am using jQuery to check this. Unfortunately the console.log(“loaded”); gets called every time the function is…
Impossible to query nested mongoose array?
I want to Query and array with regex inside and mongoose (mongoDB) model. I want to search inside the nested array of the Productmodel : The model inside the “suppliers” array is: Now here’s the problem, if i query and and populate() i get all the results. But for some reason I cannot search…
How to use a select element to insert a Thymleaf fragment?
I want to use an HTML select element to change which thymeleaf fragment is displayed. the html code: The javascript code: when the selection is changed i want the div element with the id “algParams” to display a different thymeleaf fragment. When i run it, it shows this in the page elements when i…
Detecting if a button has been pressed on the whole document
I want to detect if a button has been pressed on a document. That means I don’t want to put in document.getElementById(“ID”).onclick for each button. In other words, i want to detect if ANY button has been pressed on the document. If a button is pressed, get that button object, get it’…
How to get the correct state in an useEffect hook, after another useEffect hook modifies the same state?
I have two useEffect hooks, which will both run on change in startTime/endTime state. I understand from looking around that this is probably because React does some sort of batching for performance gain such that setState is async in nature. Also, the fetch call would be async too, so it will take time to set…
React email address format validation
I’m building a portal where students from only 6 universities can participate so I need a way to limit the email address type to these 6 universities for example emails ending with @mit.edu How do I implement this in React with the form validation set to characters and on clicking on of these formats fr…
How to display text sequentially using P5.js deviceMoved() function?
I am currently trying to make a program where the text changes as the phone moves every couple value(s) using the P5.JS deviceMoved() function. (the gif below displays how i wanted the text to change eventually as the device moved) As seen on the code below, I’ve put all the text in the array and I want…
Javascript JSON with internal array
I have a JSON with internal arrays: My code to write the table is: But always run as undefined How to get internals values in array? Answer You could make things easier by pre-processing the data and making an array of objects with all properties (rows). Then, creating your table will become simpler:
Can’t grab element from generated list
So I have a start to a program where I generate a list of values in an unordered list with delete buttons that delete the corresponding entry into the list on each line. When I try to grab the id of the appropriate <li> element upon clicking the button, it will always return null and I’m not reall…
Append data to table from json when headers are a mix of the keys and values
I have an array of objects, I want to add that data to an HTML table but I am having trouble appending it to the table as my table structure is slightly unique. My headers are a mix of the keys and values and I want to be able to get their corresponding value to populate my cells. My code: