How do I create multiple inputs after a button is clicked (Javascript) - javascript

I am new to javascript and I'm trying to make a web app that tests users and also lets them make tests. I'm currently focusing on the making-tests part of the web app. When the user enters the name of the test and the number of questions they want in the test, they click the button and then a javascript function should be called that has a loop that repeats for the number that they entered. In the loop a 'question' and an 'answer' input should be created. Here is the html for this feature:
<h3>Enter the name of the test you want to make:</h3><br>
<input type="text" name="testname" id="testnameID">
<h3>Enter the number of questions you want the test to have:</h3><br>
<input type="text" name="numofquestions" id="numID">
<button type="button" onclick="createNewElement()">Let's make it!</button>
And this is the function 'createNewElement' in javascript:
function createNewElement() {
var testname = document.getElementById("testnameID").value;
var numquestions = document.getElementById("numID").value;
var numofquestions = parseInt(numquestions)
for ( var i = 0; i < numofquestions; i++ ) {
// This will loop the amount of times as the user input
var questioninput = document.createElement("input");
questioninput.type = 'text';
questioninput.id = 'question' + i;
var answerinput = document.createElement("input");
answerinput.type = 'text';
answerinput.id = 'answer' +i;
}
}
From what I've read online I think this should work but I must have made some errors in what I've written. Any advice on how to do this successfully would be really appreciated.

You need the Template literals method to append the question(your input fields to the DOM)
Also, you need some element in your HTML, that will have all the multiple input fields.
Example:
<div id="question-paper"></div>
The above div will be your container where you can append n -number of fields you want.
function createNewElement() {
var testname = document.getElementById("testnameID").value;
var numquestions = document.getElementById("numID").value;
var numofquestions = parseInt(numquestions)
var questionAnswerHTML = "";
for (var i = 0; i < numofquestions; i++) {
questionAnswerHTML += `
<label for="question${i}">
Question: ${i+1}
</label>
<br />
<input type="text"
id="question${i}"
placeholder="Type Question ${i+1} Here." />
<br /><br />
<label for="answer${i}">
Answer: ${i+1}
</label>
<br />
<input type="text"
id="answer${i}"
placeholder="Type Answer ${i+1} Here." />
<br /><br />
`;
}
document.getElementById("question-paper").innerHTML = questionAnswerHTML;
}
<h3>Enter the name of the test you want to make:</h3>
<input type="text" name="testname" id="testnameID">
<h3>Enter the number of questions you want the test to have:</h3>
<input type="text" name="numofquestions" id="numID"> <button type="button" onclick="createNewElement()">Let's make it!</button>
<hr>
<div id="question-paper"> </div>

Related

Launching a new window and filling form values using Javascript

I have been learning JavaScript and i am attempting to launch a new window on click after a user has placed info into a form fields and then placing that info into form fields in the newly launched window. I have read many posts and methods in Stackoverflow however i cant seem to get it to work properly.
Starting page HTML:
<form id="memCat" methed="get" class="member_catalogue">
<button type="submit" class="prodBtn" id="catOrder" onclick="openMemberOrder()"><img class="prodImg" src="../../../Images/bcpot002_thumb.jpg" name="Red Bowl"></button>
<div class="cat_block">
<label class="cat_label" for="cat_name">Product Name:</label>
<input class="cat_input" type="text" id="catID" value="bepot002" readonly>
</div>
<div class="cat_block">
<label class="cat_label" for="cat_description">Product Description:</label>
<input class="cat_input" type="text" id="catDesc" value="Ocre Red Pot" readonly>
</div>
<div class="cat_block">
<label class="cat_label" for="cat_price">Per unit price:$</label>
<input class="cat_input" type="number" id="catVal" value="10" readonly>
</div>
</form>
New page HTML:
<form id="memOrder" method="post">
<div>
<label for="pname">Product Name:</label>
<input type="text" id="orderID" readonly>
</div>
<div>
<label for="pdescription">Product Description:</label>
<input type="text" id="orderDesc" readonly>
</div>
<div>
<label for="quantity">Quantity ordered:</label>
<input type="number" class="quantOrder" id="orderOrder" value="1" min="1" max="10">
</div>
<div>
<label for="ind_price">Per unit price: $</label>
<input type="number" class="quantCount" id="orderVal" readonly>
</div>
<div>
<label for="tot_price">Total Price: $</label>
<input type="number" class="quantCount" id="orderTotal" readonly>
</div>
<div>
<button type="reset">Clear Order</button>
<button type="submit" id="orderCalc">Calculate Total</button>
<button type="submit" id="orderPlace">Place Order</button>
</div>
</form>
Script i have to date:
function openMemberOrder() {
document.getElementById("orderID").value = document.getElementById("catID").document.getElementsByTagName("value");
document.getElementById("orderDesc").value = document.getElementById("catDesc").document.getElementsByTagName("value");
document.getElementById("orderVal").value = document.getElementById("catVal").document.getElementsByTagName("value");
memberOrderWindow = window.open('Member_Orders/members_order.html','_blank','width=1000,height=1000');
};
script and other meta tags in head are correct as other code is working correctly.
So after much trial and error i have had success with this:
On the submission page:
1. I created a button on the page that will capture the input form data
2. i created the localstorage function in JS
3. I then placed the script tag at the bottom of the page before the closing body tag
HTML
<button type="submit" class="prodBtn" id="catOrder" onclick="openMemberOrder()"><img class="prodImg" src="../../../Images/bcpot002/bcpot002_thumb.jpg" name="Red Bowl"></button>
Javascript
var catID = document.getElementById("catID").value;
var catDesc = document.getElementById("catDesc").value;
var catVal = document.getElementById("catVal").value;
function openMemberOrder() {
var memberOrderWindow;
localStorage.setItem("catID", document.getElementById("catID").value);
localStorage.setItem("catDesc", document.getElementById("catDesc").value);
localStorage.setItem("catVal", document.getElementById("catVal").value);
memberOrderWindow = window.open('Member_Orders/members_order.html', '_blank', 'width=1240px,height=1050px,toolbar=no,scrollbars=no,resizable=no');
} ;
Script Tag
<script type="text/javascript" src="../../../JS/catOrder.js"></script>
I then created the new page with the following javascript in the header loading both an image grid as well as input element values:
var urlArray = [];
var urlStart = '<img src=\'../../../../Images/';
var urlMid = '_r';
var urlEnd = '.jpg\'>';
var ID = localStorage.getItem('catID');
for (var rowN=1; rowN<5; rowN++) {
for (var colN = 1; colN < 6; colN++){
urlArray.push(urlStart + ID + '/' + ID + urlMid + rowN + '_c' + colN + urlEnd)
}
}
window.onload = function urlLoad(){
document.getElementById('gridContainer').innerHTML = urlArray;
document.getElementById('orderID').setAttribute('value', localStorage.getItem('catID'));
document.getElementById('orderDesc').setAttribute('value', localStorage.getItem('catDesc'));
document.getElementById('orderVal').setAttribute('value', localStorage.getItem('catVal'));
};
I then created 2 buttons to calculate a total based on inputs and clearing values separately, the script for this was placed at the bottom of the page.
function total() {
var Quantity = document.getElementById('orderQuant').value;
var Value = document.getElementById('orderVal').value;
var Total = Quantity * Value;
document.getElementById('orderTotal').value = Total;
}
function clearForm() {
var i = 0;
var j = 0;
document.getElementById('orderQuant').value = i;
document.getElementById('orderTotal').value = j;
}

Writing single JS script for assigning ID's to output in HTML

I am creating a website that has a list of user inputs, however at a certain stage I want users to see a summarized page of all their inputs. If the input was not chosen it should not show as part of the summary (as in the script example below).
Here is my problem: there will be multiple user inputs and to write a JS script to achieve what I had done in an example script below will be lots of work and unfeasible. Is there a way the two JS scripts for the individual ID's can be combined into one as in the script below?
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<div>
<label>For the first test</label>
<input type="text" placeholder="Enter Number" name="clientinfo" id="test1" required>
</div>
<div>
<label>For the second test</label>
<input type="text" placeholder="Enter Number" name="clientinfo" id="test2" required>
</div>
<button id="myBtn">Test</button>
<div style="color:blue;">
<p id="result1"></p>
</div>
<div style="color:red">
<p id="result2"></p>
</div>
<script>
function getUserName() {
var test1 = document.getElementById('test1').value;
var result1 = document.getElementById('result1');
if (test1.length > 0) {
result1.textContent = 'Test1: ' + test1;
} else {
null;
}
}
var myBtn = document.getElementById('myBtn');
myBtn.addEventListener('click', getUserName, false);
</script>
<script>
function getUserName() {
var test2 = document.getElementById('test2').value;
var result2 = document.getElementById('result2');
if (test2.length > 0) {
result2.textContent = 'Test2: ' + test2;
} else {
null;
}
}
var myBtn = document.getElementById('myBtn');
myBtn.addEventListener('click', getUserName, false);
</script>
</body>
</html>
P.s. I would also like to know if a user were to press the test button with an input, remove the input and press the test button again, that the first input would be removed?
You can get all inputs and loop throw the result and create an dom element which will contain the value of the input
and each created element will be added to lets say a result element
See code snippet
function getUserName() {
var inputList = document.getElementsByTagName("INPUT");
var res = document.getElementById("result");
res.innerHTML = "";
var indx = 1;
for (i = 0; i < inputList.length; i++) {
if (inputList[i].value != "") {
var ele = document.createElement("p");
ele.innerHTML ="test " + indx + " : " + inputList[i].value
res.appendChild(ele);
indx++;
}
}
}
var myBtn = document.getElementById('myBtn');
myBtn.addEventListener('click', getUserName, false);
<div>
<label>For the first test</label>
<input type="text" placeholder="Enter Number" name="clientinfo" id="test1" required>
</div>
<div>
<label>For the second test</label>
<input type="text" placeholder="Enter Number" name="clientinfo" id="test2" required>
</div>
<button id="myBtn">Test</button>
<div id="result">
</div>

Array of html inputs

I have a html form, where user need to enter the name and address of their office. The number of offices are dynamic.
I want to add an Add More button, so that users can enter the details of any number of offices.
My question is, how can I create an array of inputs where new elements can be added and removed using JavaScript. Currently, I'm doing it using js clone method, but I want an array, so that input data can easily be validated and stored to database using Laravel.
What I'm currently doing..
This is my HTML form where users have to enter the address of their clinic or office. I've taken a hidden input field and increasing the value of that field whenever a new clinic is added, so that I can use loop for storing data.
<div class="inputs">
<label><strong>Address</strong></label>
<input type="text" class="hidden" value="1" id="clinicCount" />
<div id="addresscontainer">
<div id="address">
<div class="row" style="margin-top:15px">
<div class="col-md-6">
<label><strong>Clinic 1</strong></label>
</div>
<div class="col-md-6">
<button id="deleteclinic" type="button" class="close deleteclinic"
onclick="removeClinic(this)">×</button>
</div>
</div>
<textarea name="address1" placeholder="Enter Clinic Address" class="form-control"></textarea>
<label class="text-muted" style="margin-top:10px">Coordinates (Click on map to get coordinates)</label>
<div class="row">
<div class="col-md-6">
<input class="form-control" id="latitude" type="text" name="latitude1" placeholder="Latitude" />
</div>
<div class="col-md-6">
<input class="form-control" id="longitude" type="text" name="longitude1" placeholder="Longitude" />
</div>
</div>
</div>
</div>
</div>
<div class="text-right">
<button class="btn btn-success" id="addclinic">Add More</button>
</div>
And my js code..
function numberClinic(){
//alert('test');
var i=0;
$('#addresscontainer > #address').each(function () {
i++;
$(this).find("strong").html("Clinic " + i);
$(this).find("textarea").attr('name','name'+i);
$(this).find("#latitude").attr('name','latitude'+i);
$(this).find("#longitude").attr('name','longitude'+i);
});
}
$("#addclinic").click(function(e){
e.preventDefault();
$("#addresscontainer").append($("#address").clone());
numberClinic();
$("#addresscontainer").find("div#address:last").find("input[name=latitude]").val('');
$("#addresscontainer").find("div#address:last").find("input[name=longitude]").val('');
$("#clinicCount").val(parseInt($("#clinicCount").val())+1);
});
function removeClinic(address){
if($("#clinicCount").val()>1){
$(address).parent('div').parent('div').parent('div').remove();
$("#clinicCount").val(parseInt($("#clinicCount").val())-1);
}
numberClinic();
}
This way, I think I can store the data to the database but can't validate the data. I'm using the laravel framework.
One way you could do this is by using the position of the input in the parent as the index in the array, then saving the value in the array every time each input is changed. Then you can just add and remove inputs.
Sample code:
var offices = document.getElementById('offices');
var output = document.getElementById('output');
var data = [];
var i = 0;
document.getElementById('add').addEventListener('click', function() {
var input = document.createElement('input');
input.setAttribute('type', 'text');
input.setAttribute('placeholder', 'Office');
var button = document.createElement('button');
var index = i++;
input.addEventListener('keyup', function() {
for (var i = 0; i < offices.children.length; i++) {
var child = offices.children[i];
if (child === input) {
break;
}
}
// i is now the index in the array
data[i] = input.value;
renderText();
});
offices.appendChild(input);
});
document.getElementById('remove').addEventListener('click', function() {
var children = offices.children;
if (children.length === data.length) {
data = data.splice(0, data.length - 1);
}
offices.removeChild(children[children.length - 1]);
renderText();
});
function renderText() {
output.innerHTML = data.join(', ');
}
JSFiddle: https://jsfiddle.net/94sns39b/2/

jQuery add ID increment to .html() appending on input onchange and refresh onchange value

I apologize for the wordy title but I haven't found a solution to my problem yet. I am a newbie with jQuery and web development so any guidance would be appreciated.
I have a <input> that allows user to enter a value (number) of how many rows of a set of input fields they want populated. Here's my example:
<div id="form">
<input id="num" name="num" type="text" />
</div>
<p> </p>
<div id="form2">
<form action="" method="post" class="form_main">
<div class="data">
<div class="item">
<input id="name" name="name[]" type="text" placeholder="name" /><br/>
<input id="age" name="age[]" type="text" placeholder="age" /><br/>
<input id="city" name="city[]" type="text" placeholder="city" /><br/>
<hr />
</div>
</div>
<button type="submit" name="submit">Submit</button>
</form>
My jQuery:
<script>
var itemNum = 1;
$("#num").on("change", function() {
var count = this.value;
var item = $(".item").parent().html();
//item.attr('id', 'item' + itemNum);
for(var i = 2; i <= count; i++) {
itemNum++;
$(".data").append(item);
}
})
</script>
I'm having problems adding an ID item+itemNum increment to <div class="item">... item.attr() didn't work. It doesn't append once I added that line of code.
Also, how can I get it so that once a user enters a number that populates rows of input fields, that if they change that number it will populate that exact number instead of adding to the already populated rows? Sorry if this doesn't make any sense. Please help!
Here is a DEMO
var itemNum = 1;
$("#num").on("change", function() {
$('.data div').slice(1).remove(); //code for removing previously populated elements.
var count = this.value;
console.log(count);
var item;
//item.attr('id', 'item' + itemNum);
var i;
for(i = 1; i <= count; i++) {
console.log(i);
item = $("#item0").clone().attr('id','item'+itemNum);
//prevent duplicated ID's
item.children('input[name="name[]"]').attr('id','name'+itemNum);
item.children('input[name="age[]"]').attr('id','age'+itemNum);
item.children('input[name="city[]"]').attr('id','city'+itemNum);
itemNum++;
$(".data").append(item);
}
})
Use clone() instead of html()
Try
var itemNum = 1,
item = $(".data .item").parent().html();;
$("#num").on("change", function () {
var count = +this.value;
if (itemNum < count) {
while (itemNum < count) {
itemNum++;
$(item).attr('id', 'item' + itemNum).appendTo('.data')
}
} else {
itemNum = count < 1 ? 1 : count;
$('.data .item').slice(itemNum).remove();
}
})
Demo: Fiddle

How to Disable whole Div Contents without using JQuery

As I have Basic knowledge of JavaScript I want to do operation like following :
By using Two radio button giving two option for Payment :
By Cash
By Check
If user select the radio button of Cash the Cheque Button should also disable and the Div of Cheque in which the details like cheque no and bank name is should also disable.
And visa Versa
Is there a way to do that without using JQuery? (disable a div and get all content disabled also)
Thanks in Advance For Help.
Try this:
document.getElementById("myDivId").disabled = true;
To disable all elements inside the div, try this:
var allChildNodes = document.getElementById("myDivId").getElementsByTagName('*');
for(var i = 0; i < allChildNodes.length; i++)
{
allChildNodes[i].disabled = true;
}
This code will disable all elements within the given container.
var container = document.getElementById("cashContainer");
var inputs = document.getElementsByTagName("input").concat(document.getElementsByTagName("select"));
for (var i = 0; i < inputs.length; i++) {
inputs[i].disabled = true;
}
Applying the same code you can re-enable the other container.
You may try this
HTML
<input type="radio" name="cashcheck" value="cash" checked />Cash<br />
<div id="cash">
<form method="post">
<input type="text" name="cashTxt1" />
<input type="text" name="cashTxt2" />
</form>
</div>
<input type="radio" name="cashcheck" value="check" />Check<br />
<div id="check">
<form method="post">
<input type="text" name="checkTxt1" disabled />
<input type="text" name="checkTxt2" disabled />
</form>
</div>
JS
window.onload=function(){
var radios = document.getElementsByName('cashcheck');
radios[0].onchange=toggle;
radios[1].onchange=toggle;
};
function toggle()
{
if(this.checked)
{
var div = document.getElementById(this.value),
inputs = div.getElementsByTagName('form')[0].getElementsByTagName('*');
for( var i=0; i<inputs.length; i++)
{
inputs[i].removeAttribute('disabled');
}
var op = this.value == 'cash' ? 'check' : 'cash',
divOp = document.getElementById(op),
divOpInputs = divOp.getElementsByTagName('form')[0].getElementsByTagName('*');
for( var i=0; i<divOpInputs.length; i++)
{
divOpInputs[i].setAttribute('disabled');
}
}
}
DEMO.
<fieldset disabled="true">
<div>
<input type="text" />
</div>
<br>
<div>
<input type="text" />
</div>
<br>
<div>
<input type="text" />
</div>
<br>
</fieldset>

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