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An event listener is only created for the last element in forEach loop

I have a firebase database and I want to get all the chats and add an HTML element to all of them. Each div has a password input and a button. I made a forEach() loop but it only makes an event listener for the last one. I'm not very experienced so it is probably a simple problem. This is my code:
get(ref(db, "chats")).then((snapshot)=>{
snapshot.forEach((child)=>{
var html = "";
var childName = child.val().chatname;
var childPassword = child.val().chatpassword;
console.log(childName);
html += `
<li>
<div class="chat-login-container">
<h3>`+childName+`</h3>
<input id="`+childName+`-input" type="password" placeholder="Enter Chat Password">
<button id="`+childName+`-button" class="login">Enter</button>
</div>
</li>
`;
messages.innerHTML += html;
var button = document.getElementById(childName+"-button");
var passwordInput = document.getElementById(childName+"-input");
button.addEventListener("click", ()=>{
get(ref(db, "chats/"+childName)).then((snapshot) =>{
if(passwordInput==childPassword){
chat = childName;
console.log("Logging in to "+childName);
messages.innerHTML = "";
start();
}else{
window.alert("Incorrect password, please try again");
}
}).catch((error)=>{
console.log(error);
});
});
});
}).catch((error)=>{
console.log(error);
});

Because, you are capturing the button by ID. It will capture the last ID recorded.
Instead use querySelector.
Try below, which is not a proper code, you need to tweak based on error messages.
get(ref(db, "chats")).then((snapshot) => {
snapshot.forEach((child) => {
var html = "";
var childName = child.val().chatname;
var childPassword = child.val().chatpassword;
console.log(childName);
html += `
<li>
<div class="chat-login-container">
<h3>`+ childName + `</h3>
<input type="hidden" class="childname" value="`+ childname + `">
<input type="hidden" class="childPassword" value="`+ childPassword + `">
<input id="`+ childName + `-input" class="password" type="password" placeholder="Enter Chat Password">
<button id="`+ childName + `-button" class="login">Enter</button>
</div>
</li>
`;
messages.innerHTML += html;
});
const chatLoginContainers = document.querySelectorAll('.chat-login-container');
chatLoginContainers.forEach((element) => {
const loginBtn = element.querySelector('.login');
loginBtn.addEventListener('click', (event) => {
const childNameEle = event.target.closest('li').querySelector('.childname');
const childPasswordEle = event.target.closest('li').querySelector('.childPassword');
const passwordEle = event.target.closest('li').querySelector('.password');
const childNameVal = childNameEle.value;
const childPasswordVal = childPasswordEle.value;
const passwordVal = passwordEle.value;
get(ref(db, "chats/" + childNameVal)).then((snapshot) => {
if (passwordVal == childPasswordVal) {
chat = childNameVal;
console.log("Logging in to " + childNameVal);
messages.innerHTML = "";
start();
} else {
window.alert("Incorrect password, please try again");
}
}).catch((error) => {
console.log(error);
});
})
});
}).catch((error) => {
console.log(error);
});

Having issues with validation of input field

I'm trying to validate an input field. When i try to submit without filling in something, it gives me the error i made: please start your question with: will i ever. So i'm trying to check wether the text that the user types into the field, starts with: will i ever.
However, when i type a single (or more) random character(s), it just submits the form. I want it to check if the input starts with those fixed tree words, otherwise, no submission.
{
const handleSubmitForm = e => {
const $form = e.currentTarget;
if (!$form.checkValidity()) {
e.preventDefault();
const field = $form.querySelector('.question_field');
showValidationInfo(field);
//$form.querySelector('.error').innerHTML = 'Some errors occured';
} else {
console.log('Form is valid => submit form');
}
};
const showValidationInfo = field => {
console.log(field);
let message;
if (field.validity.valueMissing) {
message = 'Please fill in a question starting with: Will i ever';
}
if (field.validity.typeMismatch) {
message = 'Type not right';
}
if (field.validity.rangeOverflow) {
const max = field.getAttribute('max');
message = 'Too big, max ${max}';
}
if (field.validity.rangeUnderflow) {
const min = field.getAttribute('min');
message = 'Too small, min ${min}';
}
if (field.validity.tooShort) {
const min = field.getAttribute('minlength');
message = 'Too short, minimum length is ${min}';
}
if (field.validity.tooLong) {
const max = field.getAttribute('maxlength');
message = 'Too long, maximum length is ${max}';
}
if (!field.value.toLowerCase().startsWith("will i ever")) {
message = 'Start your question with: Will i ever';
}
if (message) {
field.parentElement.querySelector('.error').textContent =
message;
field.parentElement.querySelector('.error').style.color = "red";
}
};
const handeInputField = e => {
const $field = e.currentTarget;
if ($field.checkValidity()) {
$field.parentElement.querySelector('.error').textContent = '';
if ($field.form.checkValidity()) {
$field.form.querySelector('.error').innerHTML = '';
}
}
};
const handeBlurField = e => {
const $field = e.currentTarget;
showValidationInfo($field);
};
const addValidationListeners = fields => {
fields.forEach($field => {
$field.addEventListener('input', handeInputField);
$field.addEventListener('blur', handeBlurField);
});
};
const init = () => {
const $form = document.querySelector('form');
$form.noValidate = true;
$form.addEventListener('submit', handleSubmitForm);
const fields = $form.querySelectorAll('.input');
addValidationListeners(fields);
};
init();
}
<div class="name_wrapper">
<form autocomplete="off" class="form_question" action="answer.html">
<label class="name question" for="name">Ask me a question</label>
<div class="question_wrapper">
<p class="error">Start your question with: Will i ever...</p>
<input class="field question_field" type="text" name="question" placeholder="Will i ever..." value="" required>
</div>
<input id="button" class="answr-btn btn-question" type="submit" value="answer it!">
<input autocomplete="false" name="hidden" type="text" style="display:none;">
</form>
</div>

This line makes no sense:
const fields = $form.querySelectorAll('.input');
There are no HTML elements with class="input" in your form.
Did you mean $form.querySelectorAll('input')?

The problem is how you are handling the validation, the key is in this line if (!$form.checkValidity()) { this will not check if your string starts with Will i ever you have to do it manually before the if, here you have an alternative solution:
{
const handleSubmitForm = e => {
const $form = e.currentTarget;
const field = $form.querySelector('.question_field');
//here we validate the form manually
const message = showValidationInfo(field);
//if a message is found we show the error on the DOM, if is undefined we have no errors and we can submit the form
if (message) {
e.preventDefault();
$form.querySelector('.error').innerHTML = message;
$form.querySelector('.error').style.color = "red";
} else {
console.log('Form is valid => submit form');
}
};
const showValidationInfo = field => {
if (field.validity.valueMissing) {
return 'Please fill in a question starting with: Will i ever';
}
if (field.validity.typeMismatch) {
return 'Type not right';
}
if (field.validity.rangeOverflow) {
const max = field.getAttribute('max');
return 'Too big, max ${max}';
}
if (field.validity.rangeUnderflow) {
const min = field.getAttribute('min');
return 'Too small, min ${min}';
}
if (field.validity.tooShort) {
const min = field.getAttribute('minlength');
return 'Too short, minimum length is ${min}';
}
if (field.validity.tooLong) {
const max = field.getAttribute('maxlength');
return 'Too long, maximum length is ${max}';
}
if (!field.value.toLowerCase().startsWith("will i ever")) {
return 'Start your question with: Will i ever';
}
return undefined;
};
const handeInputField = e => {
const $field = e.currentTarget;
if ($field.checkValidity()) {
$field.parentElement.querySelector('.error').textContent = '';
if ($field.form.checkValidity()) {
$field.form.querySelector('.error').innerHTML = '';
}
}
};
const handeBlurField = e => {
const $field = e.currentTarget;
showValidationInfo($field);
};
const addValidationListeners = fields => {
fields.forEach($field => {
$field.addEventListener('input', handeInputField);
$field.addEventListener('blur', handeBlurField);
});
};
const init = () => {
const $form = document.querySelector('form');
$form.noValidate = true;
$form.addEventListener('submit', handleSubmitForm);
const fields = $form.querySelectorAll('.input');
addValidationListeners(fields);
};
init();
}
<div class="name_wrapper">
<form autocomplete="off" class="form_question" action="answer.html">
<label class="name question" for="name">Ask me a question</label>
<div class="question_wrapper">
<p class="error">Start your question with: Will i ever...</p>
<input class="field question_field" type="text" name="question" placeholder="Will i ever..." value="" required>
</div>
<input id="button" class="answr-btn btn-question" type="submit" value="answer it!">
<input autocomplete="false" name="hidden" type="text" style="display:none;">
</form>

You have uncommented backtick at occured `;

Element text not changing when passing selected textContent and new value to an update function

I'm creating a CRUD page where the user can add, delete and edit text, but I have an issue in updating the text after I select it for edit.
In editText function when I click the edit button the text that was added will pop up inside the input field. When I click on the update button (triggering the updateText function), I can see the text in console log but the corresponding html is not updated.
HTML
<div class="main">
<form>
<input type="text" placeholder="search">
</form>
<ul></ul>
<div>
<input class="add-text" type="text" placeholder="Add Text">
<button id="add">Add</button>
<button id="update">update</button>
</div>
</div>
Javascript
const inputsearch = document.querySelector('form input');
const addInputBtn = document.querySelector('#add');
const update = document.querySelector('#update');
addInputBtn.addEventListener('click', addtext);
function addtext(){
let li = document.createElement('li');
let inputadd = document.querySelector('.add-text');
let addedtext = inputadd.value;
let h1Tag = '<h1 id="text">'+addedtext+'</h1>';
let tags = h1Tag + '<button id="delete">Delete</button><button id="edit">Edit</button>';
if(addedtext == ''){
alert('please add some text');
return;
}else{
li.innerHTML = tags;
document.querySelector('ul').appendChild(li);
}
li.querySelectorAll('#delete')[0].addEventListener('click', deleteText);
li.querySelectorAll('#edit')[0].addEventListener('click', editText);
getlist(li, h1Tag);
inputadd.value = '';
}
function deleteText(e) {
e.target.parentNode.remove();
document.querySelector('.add-text').value = '';
}
function editText(e) {
let currentText = e.target.parentNode.firstChild.textContent;
let currentValue = document.querySelector('.add-text');
currentValue.value = currentText;
getupdate(currentText, currentValue);
}
function getupdate(currentText, currentValue) {
update.addEventListener('click', updateText);
function updateText() {
currentText = currentValue.value
console.log(currentText = currentValue.value);
}
}
function getlist(li, h1Tag) {
inputsearch.addEventListener('keyup', serchText);
function serchText(e) {
let typetext = e.target.value.toLowerCase();
if(h1Tag.toLowerCase().indexOf(typetext) != -1){
li.style.display = 'block';
}else{
li.style.display = 'none';
}
}
}

To solve the issue without changing your overall approach, your edit button click needs to get the corresponding element (not just its textContent) and pass it to your getupdate() function to be updated when your update button is clicked. Relatively minor changes to your current functions:
function editText(e) {
const currentText = e.target.parentNode.firstChild;
const currentValue = document.querySelector('.add-text');
currentValue.value = currentText.textContent;
getupdate(currentText, currentValue);
}
function getupdate(currentText, currentValue) {
update.addEventListener('click', updateText);
function updateText() {
currentText.textContent = currentValue.value;
}
}
There are some other issues with your code, particularly the creation of multiple elements with the same id (which is malformed and will likely become problematic as you add additional features). Following is a snippet that addresses that issue as well as simplifying some of your functions and fixing the search.
const search = document.querySelector('form input');
const input = document.querySelector('.add-text');
const container = document.querySelector('ul');
let items = null;
let currentItem = null;
const searchItems = (event) => {
if (items) {
const s = event.currentTarget.value.toLowerCase();
for (const item of items) {
if (item.firstChild.textContent.toLowerCase().indexOf(s) !== -1) {
item.style.display = 'block';
} else {
item.style.display = 'none';
}
}
}
};
const deleteItem = (event) => {
currentItem = null;
event.currentTarget.parentNode.remove();
};
const editItem = (event) => {
currentItem = event.currentTarget.parentNode.firstChild;
input.value = currentItem.textContent;
};
const updateItem = () => {
if (currentItem) {
currentItem.textContent = input.value;
}
};
const addItem = () => {
let val = input.value
if (val) {
const li = document.createElement('li');
let inner = '<h1 class="text">' + val + '</h1>';
inner += '<button class="delete">Delete</button>';
inner += '<button class="edit">Edit</button>';
li.innerHTML = inner;
container.appendChild(li);
val = '';
currentItem = li.firstChild;
items = document.querySelectorAll('li');
for (let del of document.querySelectorAll('.delete')) {
del.addEventListener('click', deleteItem);
}
for (let edit of document.querySelectorAll('.edit')) {
edit.addEventListener('click', editItem);
}
} else {
alert('please add some text');
return;
}
};
search.addEventListener('keyup', searchItems);
document.querySelector('#add').addEventListener('click', addItem);
document.querySelector('#update').addEventListener('click', updateItem);
<div class="main">
<form>
<input type="text" placeholder="Search">
</form>
<ul></ul>
<div>
<input class="add-text" type="text" placeholder="Add Text">
<button id="add">Add</button>
<button id="update">Update</button>
</div>
</div>

Removing trailing letter from textarea JS Function

I have created a SPA Translator App using the Yandex API. I have just finished the logic and the functionality to my app, I am stuck though on how to remove the trailing letter in my output text-area when a user removes all the text from the input text-area.
How would one write a function to clear the output text-area back to ('') blank string after the user has removed all the input text. A link to my live site is here (https://translex-app-shanemuir.c9users.io/dist/index.html).
Here I have a HTML form:
<div class="container myForm text-center">
<div class="row row-center">
<div class="col-sm-12">
<form class="form-inline well justify-content-center">
<textarea id="inputText" class="form-control" placeholder="Enter a Word..."></textarea>
<select class="form-control" id="selectLang">
<option selected>Choose Language...</option>
</select>
</form>
</div>
</div>
<div class="row">
<div class="col-sm-12">
<h2 class="translation-header">Translation</h2>
<form class="form-inline well justify-content-center">
<textarea readonly class="form-control" placeholder="Translation" id="translation"></textarea>
</form>
</div>
</div>
</div>
Here I have some JS:
let searchInput = document.querySelector('#inputText');
let select = document.querySelector('#selectLang');
let textArea = document.querySelector('#translation');
let selectedLang = 'es';
function getLanguages(){
axios.get('https://translate.yandex.net/api/v1.5/tr.json/getLangs?key=trnsl.1.1.20180914T205319Z.b0ffef87e97badd3.e78787ec8a392b9772f8b8f56933b1d86463d330&ui=en')
.then((response) => {
let languages = response.data.langs;
let languageCode = {
name:'',
code:''
};
for(language in languages) {
languageCode.name = languages[language];
languageCode.code = language;
let option = document.createElement('option');
option.innerHTML = languageCode.name;
option.value = languageCode.code;
select.appendChild(option);
}
})
.catch((err) => {
console.log(err);
});
}
function translateText(textArg){
let searchText;
if(textArg == ''){
searchText = document.querySelector('#inputText').value;
}
else{
searchText = textArg;
}
if(searchText != ''){
axios.get('https://translate.yandex.net/api/v1.5/tr.json/translate?key=trnsl.1.1.20180914T205319Z.b0ffef87e97badd3.e78787ec8a392b9772f8b8f56933b1d86463d330&lang=' + selectedLang + '&text=' + searchText)
.then((response) => {
let translateInput = document.querySelector('#translation');
translateInput.value = response.data.text[0];
})
.catch((err) => {
console.log(err);
});
}
}
searchInput.addEventListener('keyup',() => {
translateText('');
});
select.addEventListener('change',() => {
selectedLang = select.options[select.selectedIndex].value;
translateText('');
});
getLanguages();

Add an else clause to the if, to empty the textarea.
if(searchText != ''){
axios.get('https://translate.yandex.net/api/v1.5/tr.json/translate?key=trnsl.1.1.20180914T205319Z.b0ffef87e97badd3.e78787ec8a392b9772f8b8f56933b1d86463d330&lang=' + selectedLang + '&text=' + searchText)
.then((response) => {
let translateInput = document.querySelector('#translation');
translateInput.value = response.data.text[0];
})
.catch((err) => {
console.log(err);
});
} else {
document.querySelector('#translation').value = '';
}

Validation with jquery and datalist

I have an similar problem like this post: Validation with datalist
However the answer of FelDev is in JavaScript I need it in jquery .
I am new to jquery therefore it would be of great help if some can help.
In the following the answer of FelDev:
let btn = document.getElementById("btnSend");
let form = document.getElementById("zeForm");
let input = document.getElementById("zeInput");
let msg = document.getElementById("msg");
let allowedValues = ["atown", "btown", "ctown"]; // same values as the options in your datalist
btn.onclick = function() {
let allGood = false;
allowedValues.forEach(function(elm) {
if(elm === input.value) {
allGood = true;
return;
}
})
if(allGood) {
msg.innerHTML = "Success!!";
msg.style.color = "green";
//form.submit();
} else {
msg.innerHTML = "This value is not accepted";
msg.style.color = "red";
}
msg.style.display = "inline";
}
#msg {
display: none;
}
#btnSend {
display: block;
margin-top:1rem;
}
<form id="zeForm">
<input id="zeInput" type="text" list="typ" name="name" placeholder="gtown" >
<datalist id="typ">
<!-- notice the absence of a <select> here... -->
<option value="atown">atown</option>
<option value="btown">btown</option>
<option value="ctown">ctown</option>
</datalist>
</input>
<p id="msg"></p>
<button id="btnSend" type="button">send</button>
</form>

So do you need a translation?
So the jquery of this js is :
let btn = $("#btnSend");
let form = $("#zeForm");
let input = $("#zeInput");
let msg = $("#msg");
let allowedValues = ["atown", "btown", "ctown"]; // same values as the options in your datalist
btn.on('click' , function() {
let allGood = false;
allowedValues.each(function(index, element) {
if (element === input.value) {
allGood = true;
return;
}
})
if (allGood) {
msg.text("Success!!");
msg.attr('style',"color:green");
//form.submit();
} else {
msg.text("This value is not accepted";
msg.attr('style',"color:red");
}
msg.attr('style',"display:inline");
});