Here is my code at the moment
solution () {
let input = document.getElementById("number").value;
if (input.length > 0) {
const numbers = /[0-9]/g;
let newInput = input.match(numbers).join("");
let shuffled = newInput
console.log(typeof newInput)
alert(shuffled)
} else {
console.log("Error please try again");
}
}
Currently, as the user enters their input the code returns the numbers within their input.
I did look into permutation but I still new to coding and struggling to fix my code
I need to add formatting to my inputBox suited for currency, it should look like this: £000,000.000.
This what my script currently looks like:
var elDeliveryPrice = document.getElementById('deliveryPrice');
var elOrderValue = document.getElementById('orderValue');
var formatter = new Intl.NumberFormat('gb-GB', { style: 'currency', currency: 'GBP' });
elOrderValue.addEventListener('keyup', _ => {
let curVal = elOrderValue.value;
let curValFloat = parseFloat(curVal);
if (isNaN(curValFloat)) {
elDeliveryPrice.innerHTML = '';
return;
}
elDeliveryPrice.innerHTML = formatter.format((curValFloat * 0.025) + 4);
});
Here's what the elements look like. Check out what it looks like on the live site. This script currently shows the inputted number value on keyup with an added formula to show a price that's relative to the input value on a separate div block, with currency formatting only on the output. How would I modify this code to add formatting to the inputBox whilst a user is typing? Thanks.
I'm not an UX expert, but from my experiences I can tell you you shouldn't do it as long as the cursor is inside the textfield. Formatting the input while the user is still typing creates a lot of frustration and "weird" behaviour for the user (jumping cursor, suddenly special characters appear, etc.). Maybe it's fine to format it back and forth when the input gains and looses focus.
However, to do it regardless what people think about your page and it's usability: Assign the formatted text to the value property of the input:
var elDeliveryPrice = document.getElementById('deliveryPrice');
var elOrderValue = document.getElementById('orderValue');
var formatter = new Intl.NumberFormat('gb-GB', { style: 'currency', currency: 'GBP' });
elOrderValue.addEventListener('keyup', _ => {
let curVal = elOrderValue.value;
let curValFloat = parseFloat(curVal);
if (isNaN(curValFloat)) {
elDeliveryPrice.innerHTML = '';
return;
}
elOrderValue.value = formatter.format((curValFloat * 0.025) + 4); // <-- this line
});
Be warned: It will most certainly result in bugs/strange behaviour/whatever.
I have a text field with type='text' and I am trying to format the text with commas. Example: 500000000 would become 500,000,000.
I have the following code:
function addComma(values) {
values.value = values.value.replace(",", "").replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
if (document.getElementById("values"))
payment = parseInt(document.getElementById("values").value);
<label1>Rent</label1> <input id="values" type="text" onkeyup="addComma(this);">
However, it's printing 5,000,0,0,0,000 and the formatting is off for some reason. I also tried .toLocaleString(), but that doesn't seem to work either. What am I doing wrong here?
I was referred to a few other posts on Stack Overflow, but nothing seems to work out.
function addComma(values) {
const v = values.value && new Number(values.value.replace(/,/g,''));
values.value = v.toLocaleString();
}
if (document.getElementById("values"))
payment = parseInt(document.getElementById("values").value);
<label1>Rent</label1> <input id="values" type="text" onkeyup="addComma(this);">
You can do this by converting the number to a string, then manually iterating over each character and find places where a comma is needed.
function formatNumber(number) {
var str = number.toString();
var offset = str.length % 3;
var newStr = '';
for (var i = 0; i < str.length; i++) {
if (i > 0 && i % 3 === offset) {
newStr += ',';
}
newStr += str[i];
}
console.log(str, '=>', newStr);
}
formatNumber(5);
formatNumber(50);
formatNumber(500);
formatNumber(5000);
formatNumber(50000);
formatNumber(500000);
formatNumber(5000000);
I'd recommend using a change event rather than a keyup event as change will only update the value when the input is no longer the focus. If you use keyup the code will try and reinterpret the new string you add back to the input as a number and throw an error.
Here's the code using toLocaleString (just press tab after adding the number as if to move to the next input box):
const values = document.querySelector('#values');
values.addEventListener('change', handleChange, false);
function handleChange(e) {
const value = Number(e.target.value);
const formatted = value.toLocaleString();
values.value = formatted;
}
<input id="values" type="text">
The other answers posted before this one using the input field are ok to show how it works, but they are bugged as soon as you enter a new number when it has formatted to a string using toLocaleString(). For that reason I added the toNumber() function to be complete. In the example below I preform the following steps:
When user fills in a number in the input field and leaves the input field: Call toString(e) and make from the entered number a formatted string.
If the user again selects the input field, call toNumber(e) and format it back to a number.
This makes sure you won't get NaN when reselecting or will become completely unusable.
The NaN property represents "Not-a-Number" value. This property indicates that a value is not a legal number.
It is still possible to add text in it, this will result in NaN as text cannot be formatted to a number. This could be filtered out in the toString(e) when necessary. I did this in the example below by adding if (formatted !== 'NaN') {} Only when it's not NaN it will set the value to the new formatted number. Else it won't do anything. Please note: a number with dots is a string in this case so wont work either.
const values = document.querySelector('#values');
values.addEventListener('click', toNumber, false);
values.addEventListener('focusout', toString, false);
function toNumber(e) {
const value = e.target.value;
const unformatted = value.replace(/\D/g,'');
values.value = unformatted;
}
function toString(e) {
const value = Number(e.target.value);
const formatted = value.toLocaleString();
if (formatted !== 'NaN') {
values.value = formatted;
}
}
<input id="values" type="text">
To fix that, you can also remove my addition and add a filter before the toString(e) does it's thing and filter the dots, text etc. so only the numbers remain.
Is there anything wrong with the jQuery/JS below? I have an input field aAmt which on change calls below. ${dAmt} = "10000" from DB. It basically converts the number to $ format(eg.. 23 to $23.00) and focuses the value to the input field. Issue is the if loop (if(aAmt >= a_amount)...) fails.
Even if the condition fails it goes to if loops and shows the div which should not happen. I don't see any error in developers console.
$('#aAmt').change(function() {
var aAmt = $("#aAmt").val();
var a_amount = "${dAmt}";
curFormat(aAmt);
if(aAmt >= a_amount)
{
$("#dsDiv").show();
}else{
$("#dsDiv").hide();
}
});
function curFormat(aAmt)
{
var nAmt = Number(aAmt.replace(/[^0-9\.]+/g,""));
var fAmt = '$' + nAmt.toFixed(2).replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");
document.getElementById("aAmt").value = fAmt;
}
Have you tried to convert a_amount to an int, to be sure to compare two integers together:
var a_amount = parseInt("${dAmt}");
We're displaying five input fields to user. He can type some information in them. After that, we need to find out if his input is correct. For that purpose we use an array of possible correct values.
Like:
var input = document.getElementById("input").value;
input = input.toLowerCase();
inputPos = possibleInputs.indexOf(input);
inputPosArray.push(inputPos);
The code for analysis looks like that for now:
function arrayLookup() {
var inputCorrect = true;
inputPosArray.forEach(function(item, i, inputPosArray) {
if (inputPosArray[i] == -1) {
wrongInput = cardRPos.indexOf(cardRPos[i]) + 1;
wrongInputsArray.push(wrongInput);
inputCorrect = false;
} else {
null;
}
});
if (inputCorrect == false) {
alert("Wrong input! Check field " + wrongInputsArray);
} else {
nextStep();
}}
For now it correctly finds out if input is wrong and alerts user.
The problem is in "wrongInputsArray" - it doesn't display output correctly. E.g. if user has typed wrong information in 2nd field, it will print out "2".
But if he has made mistakes in 2nd and 5th field, he gets "Wrong input! Check field 2,2" alert.
Please show me what am I doing wrong.
Kindly yours,
Richard
You are using this code to insert the wrong asnwers:
wrongInput = cardRPos.indexOf(cardRPos[i]) + 1;
If two questions has the same answer, indexOf will return always the first match. Try just using this:
wrongInput = i + 1;