Button onsubmit() event is not working on react

I tried to coding the form submission code on ReactJS and Express,NodeJS but I got some problem with the onSubmit() event Everytime that I code <form onSubmit={loginUser}> the button won’t submit, can’t even click. But if I remove to <form>, the button can click normally I changed in to <input type=’submit’>Login</input> and the page has… Read More Button onsubmit() event is not working on react

Is it a good idea to use useRef to prevent rerendering on every input change?

I joined a Frontend bootcamp and now I have to create a registration form as a part of my first project. I want to use the best practices to be… you know… one of the best students to get hired afterwards. The registration form has 9 fields including selcet, textareas and usual inputs. And AFAIK… Read More Is it a good idea to use useRef to prevent rerendering on every input change?

react-native-dropdown-picker error – "onChange is not an function (In onChange(value), onChange is undefined"

Im trying to use DropDownPicker from react-native-dropdown-picker with Controllers from react-hook-form. Any ideas how to fix it? Problematic part with error code <Controller control={control} defaultValue={"Choose gender…"} name="gender" rules={{ required: true }} render={({ onChange, value, name, ref }) => ( <DropDownPicker placeholder="Select your gender" open={listOpen} setOpen={itemValue => setListOpen(itemValue)} items={listData} value={value} setValue={value => onChange(value)} /> )} />… Read More react-native-dropdown-picker error – "onChange is not an function (In onChange(value), onChange is undefined"

How do I not allow submission for empty fields from a child component? More explanation below

I have this sample codesandbox I made, though, in my original one there were already a lot of values. I only recreated the problem that I had. Codesandbox: https://codesandbox.io/s/youthful-firefly-40mig3?file=/src/App.js I have this in my App.js where I define some of my needed values and then pass it to 2 other components. <div className="App"> {/* some… Read More How do I not allow submission for empty fields from a child component? More explanation below

performing a search on enter?

I have this form: <form> <label for="locationsearch">Location:</label> <input type="search" id="locationsearch" name="locationsearch" /> </form> I want to add an eventListener when I hit enter on the input(i.e. #locationsearch). I tried doing this: const locationSearch = document.getElementById("locationsearch"); locationSearch.addEventListener("search", () => { console.log("search entered"); }); and this: const locationSearch = document.getElementById("locationsearch"); locationSearch.onsubmit = function () { console.log("search entered");… Read More performing a search on enter?

How to create a cookie to store the timestamp of when a page is first loaded with php

I would really appreciate any help if possible! This is the question: Use a cookie (NOT PHP SESSION) that expires a year from now to do the following: Record the timestamp of the FIRST load of this page (but NOT any subsequent load of this page). The code: <!DOCTYPE html> <html> <head> <title>User Profile</title> </head>… Read More How to create a cookie to store the timestamp of when a page is first loaded with php