I have a form in a page, when the user inputs the name of a new student and clicks submit, I want the content of that component (the form) to be completely replaced by the submitted name. How can I achieve this (Replace the form with the list onsubmit)? I have read that I can use conditional rendering to toggle
Tag: conditional-statements
How does this conditional statement work?
This function finds the middle value of an array. But the conditional statement makes no sense to me, since arr.length === 0 is never true but the function still works for both even and odd numbers. I think the condition should be arr.length % 2 !== 0 and it works too, but even then I don’t see how the correct
Trying to return a filter() value from an array of objects based on conditionals
I’m trying to return only a part of my object as an array based on conditionals but I’m kinda stumped. I have an array of objects and I want to return an array of names for each key : value they fit in. I do get only the unique pairings but I’m returning the food key:value as well and all
What is the best option, a loop inside a conditional or a conditional inside a loop?
Seems obvious, but let’s say we have 2 arrays and I want to push some objects inside if certain condition is true. Generally speaking, it would be better like this: or like this: I think the second option looks shorter, but maybe it’s worse in performance. Answer The best is:
Conditional Form Inputs – Multiple Fields Shown/Hidden
I am attempting to build a form that hides multiple input boxes of the form unless a condition is met. So the question would be: Do you have a separate mailing address? Yes No If “yes” is selected, I want to then show three input fields for their mailing address, city, and zip. If “no,” then I don’t want anything
Function return boolean statement
Task Instructions Your task in this activity is to create a function that checks if a person is old enough to vote by checking their age. This function is called isOldEnoughToVote(age) and has the following specifications: It takes an argument called age representing the age of the person. It checks if the age is greater than or equal to 18.
Qualtrics show question based on previous answer using JavaScript
I’m fairly new to JavaScript and have tried to find a solution to my problem but without success. I have a question (Q4) that should only be displayed if the answer to Q3 is “yes”. If I use display logic, Qualtrics will put Q4 on a separate page since it is a “slide” question (the In Page option is unavailable).
How to split nested ternary operator into normal if else condition
I was trying to understand ternary operator into normal if else condition. how to understand this multiple nested condition Answer It’s equivalent to the following: The conditional operator approach could be refactored to be more readable by putting the NOTHING condition first, though, if you wanted:
Rendering Content Conditionally in React JS Based on the state
I have a page that renders questions that have been posted. I want to create a button that displays only answered questions based on the state = {isAnswered: true}. Is the state isAnswered is true then onClick will display answered questions only where isAnswered is set to true in the object. How can I used this Filter button to conditionally
In what situation would ‘a != a’ resolve to true in JavaScript?
Looking through the code of svelte.js I found this odd looking function: Can someone explain to me in what situation comparing a variable with it self for inequality would resolve to false? I know that != and == are weaker comparison operators than !== and === because they don’t really care about the type but I still can’t figure out