I've got a form on my site using 6 input fields. The site visitor simply enters a 6 digit code into these 6 boxes. The thing is that they'll get the 6 digit code and it would be ideal to allow them to simply copy the 6 digit code we send them into these input fields by simply putting pasting into the first input field and having the remaining 5 digits go into the remaining 5 input fields. It would just make it much easier than having to manually enter each digit into each input field.
Here's the code we're currently using, but it can easily be changed to accomplish what is described above:
<input type="text" maxlength="1" class="def-txt-input" name="chars[1]">
<input type="text" maxlength="1" class="def-txt-input" name="chars[2]">
<input type="text" maxlength="1" class="def-txt-input" name="chars[3]">
<input type="text" maxlength="1" class="def-txt-input" name="chars[4]">
<input type="text" maxlength="1" class="def-txt-input" name="chars[5]">
<input type="text" maxlength="1" class="def-txt-input" name="chars[6]">
I saw a posting similar to this here: Pasting of serialnumber over multiple textfields
But it doesn't have the solution I'm looking for. Ideally this could be pulled off using jQuery or plain JavaScript.
Edit
I didn't like the timer solution I used in the paste event and the complexity of just using the input or paste event.
After looking at this for a while I added a solution which uses a hybrid between the 2.
The code seems to do all that is required now.
The Script:
var $inputs = $(".def-txt-input");
var intRegex = /^\d+$/;
// Prevents user from manually entering non-digits.
$inputs.on("input.fromManual", function(){
if(!intRegex.test($(this).val())){
$(this).val("");
}
});
// Prevents pasting non-digits and if value is 6 characters long will parse each character into an individual box.
$inputs.on("paste", function() {
var $this = $(this);
var originalValue = $this.val();
$this.val("");
$this.one("input.fromPaste", function(){
$currentInputBox = $(this);
var pastedValue = $currentInputBox.val();
if (pastedValue.length == 6 && intRegex.test(pastedValue)) {
pasteValues(pastedValue);
}
else {
$this.val(originalValue);
}
$inputs.attr("maxlength", 1);
});
$inputs.attr("maxlength", 6);
});
// Parses the individual digits into the individual boxes.
function pasteValues(element) {
var values = element.split("");
$(values).each(function(index) {
var $inputBox = $('.def-txt-input[name="chars[' + (index + 1) + ']"]');
$inputBox.val(values[index])
});
};
See DEMO
Here is an example of a jquery plugin that does the same thing as the original answer only generalized.
I went to great lengths to modify the original answer ( http://jsfiddle.net/D7jVR/ ) to a jquery plugin and the source code is here: https://github.com/relipse/jquery-pastehopacross/blob/master/jquery.pastehopacross.js
An example of this on jsfiddle is here:
http://jsfiddle.net/D7jVR/111/
The source as of 4-Apr-2013 is below:
/**
* PasteHopAcross jquery plugin
* Paste across multiple inputs plugin,
* inspired by http://jsfiddle.net/D7jVR/
*/
(function ($) {
jQuery.fn.pastehopacross = function(opts){
if (!opts){ opts = {} }
if (!opts.regexRemove){
opts.regexRemove = false;
}
if (!opts.inputs){
opts.inputs = [];
}
if (opts.inputs.length == 0){
//return
return $(this);
}
if (!opts.first_maxlength){
opts.first_maxlength = $(this).attr('maxlength');
if (!opts.first_maxlength){
return $(this);
}
}
$(this).on('paste', function(){
//remove maxlength attribute
$(this).removeAttr('maxlength');
$(this).one("input.fromPaste", function(){
var $firstBox = $(this);
var pastedValue = $(this).val();
if (opts.regexRemove){
pastedValue = pastedValue.replace(opts.regexRemove, "");
}
var str_pv = pastedValue;
$(opts.inputs).each(function(){
var pv = str_pv.split('');
var maxlength;
if ($firstBox.get(0) == this){
maxlength = opts.first_maxlength;
}else{
maxlength = $(this).attr('maxlength');
}
if (maxlength == undefined){
//paste them all!
maxlength = pv.length;
}
//clear the value
$(this).val('');
var nwval = '';
for (var i = 0; i < maxlength; ++i){
if (typeof(pv[i]) != 'undefined'){
nwval += pv[i];
}
}
$(this).val(nwval);
//remove everything from earlier
str_pv = str_pv.substring(maxlength);
});
//restore maxlength attribute
$(this).attr('maxlength', opts.first_maxlength);
});
});
return $(this);
}
})(jQuery);
This shouldn't be too difficult ... add a handler for the paste event on the first input, and then process per the requirement.
Edit
Actually this is much trickier than I thought, because it seems there's no way to get what text was pasted. You might have to kind of hack this functionality in, using something like this (semi-working)... (see the JSFiddle).
$(document).on("input", "input[name^=chars]", function(e) {
// get the text entered
var text = $(this).val();
// if 6 characters were entered, place one in each of the input textboxes
if (text.length == 6) {
for (i=1 ; i<=text.length ; i++) {
$("input[name^=chars]").eq(i-1).val(text[i-1]);
}
}
// otherwise, make sure a maximum of 1 character can be entered
else if (text.length > 1) {
$(this).val(text[0]);
}
});
HTML
<input id="input-1" maxlength="1" type="number" />
<input id="input-2" maxlength="1" type="number" />
<input id="input-3" maxlength="1" type="number" />
<input id="input-4" maxlength="1" type="number" />
jQuery
$("input").bind("paste", function(e){
var pastedData = e.originalEvent.clipboardData.getData('text');
var num_array = [];
num_array = pastedData.toString(10).replace(/\D/g, '0').split('').map(Number); // creates array of numbers
for(var a = 0; a < 4; a++) { // Since I have 4 input boxes to fill in
var pos = a+1;
event.preventDefault();
$('#input-'+pos).val(num_array[a]);
}
});
You're going to have to right some custom code. You may have to remove the maxlength property and use javascript to enforce the limit of one number per input.
As dbasemane suggests, you can listen for a paste event. You can listen to keyup events too to allow the user to type out numbers without having to switch to the next input.
Here is one possible solution:
function handleCharacter(event) {
var $input = $(this),
index = getIndex($input),
digit = $input.val().slice(0,1),
rest = $input.val().slice(1),
$next;
if (rest.length > 0) {
$input.val(digit); // trim input value to just one character
$next = $('.def-txt-input[name="chars['+ (index + 1) +']"]');
if ($next.length > 0) {
$next.val(rest); // push the rest of the value into the next input
$next.focus();
handleCharacter.call($next, event); // run the same code on the next input
}
}
}
function handleBackspace(event) {
var $input = $(this),
index = getIndex($input),
$prev;
// if the user pressed backspace and the input is empty
if (event.which === 8 && !$(this).val()) {
$prev = $('.def-txt-input[name="chars['+ (index - 1) +']"]');
$prev.focus();
}
}
function getIndex($input) {
return parseInt($input.attr('name').split(/[\[\]]/)[1], 10);
}
$('.def-txt-input')
.on('keyup paste', handleCharacter)
.on('keydown', handleBackspace);
I have this code set up on jsfiddle, so you can take a look at how it runs: http://jsfiddle.net/hallettj/Kcyna/
Related
I need to validate text area as following code,
my code as follows, here I need set maximum length as 10 and, if user trying to enter more than 10 need to prevent and if it is backspace or delete need to allow for deleting purpose. and also need to show remaining character count in a paragraph. But this code not working well. Its not preventing text input after 10.
<textarea id="txtxasa" class="message-content" onkeyup="Validate(event,this)"></textarea>
<p id="MsgContentRemainingLimit" class="message-character-limit">10 characters remaining</p>
function Validate(e,vald) {
var code;
var txtLength = vald.value.length;
var remainingContent = 10 - txtLength;
$('#MsgContentRemainingLimit').text(remainingContent);
console.log(vald.value.length)
if (!e) var e = window.event;
if (e.keyCode) code = e.keyCode;
else if (e.which) code = e.which;
if (txtLength >=10 && (code != 8 || code != 46))
return false;
}
Have you tried adding maxlength="10" to the textarea. I've done it and it works for me.
In Javascript you can try like this
let element = document.getElementById('input-name');
let countElem = document.getElementById('counter').innerHTML;
element.addEventListener('input', function() {
let inputvalue = this.value;
let maxLength = 10;
//disable the input if reached the limit
if (inputvalue.length > maxLength) {
console.log('maximum character limit reached');
this.disabled = true;
}
//count the numbers
let count = parseInt(countElem, 10);
document.getElementById('counter').innerHTML = count - inputvalue.length;
if (inputvalue.length > count) {
document.getElementById('counter').innerHTML = 0;
}
});
<p>
<input placeholder="First Name" id="input-name" name="input">
</p>
<p>remaining characters:</p><span id="counter" style="font-size:25px; font-weight:600;">10</span><br>
In Html5 you can also use the <input maxlength='10'> to limit characters only as a frontend validation. onkeyup in your code will not work if the user copy text and right click and paste them.
I have an input where the user can enter initials. The input has a max length of 3.
I have the following js
personaliseShirt.plInitials = function () {
console.log('pressed');
var inputPL = $('.max-length_3');
$(inputPL).on('keyup', function () {
var max = 3;
console.log(inputPL.val.length);
if (inputPL.val.length > max) {
inputPL.val = inputPL.value.substring(0, max);
}
})
}
My issue is that the first input field seems to stop the user from entering more than 3 characters but if the user has multiple, then after the first input the rest allow for more than 3 :/
HTML for input field
<input onkeyup="this.value = this.value.toUpperCase();" pattern="[A-Za-z]+" maxlength="3" type="text" class="form-control input-block-level defaultY? max-length_3" max="3" value="" placeholder="Enter Player Initials" name="player_2_9_6" id="player_2_9_6">
Any help or suggestions would be great
Thanks in advance!
Your variable inputPL is a JQuery array with multiple elements in it. In your keyup handler, you check for the length of this array, which won't work. Use this instead:
personaliseShirt.plInitials = function () {
console.log('pressed');
var inputPL = $('.max-length_3');
$(inputPL).on('keyup', function () {
var max = 3;
var $thisElem = $(this);
console.log($thisElem.val.length);
if ($thisElem.val.length > max) {
$thisElem.val = $thisElem.value.substring(0, max);
}
})
}
Also please check, if your mix-up of val and value is intended, or if you need to use val() instead.
It's working on firefox and chrome. You can use this function for repeated use.
$('input.testinput').on('keyup', function() {
limitText(this, 3)
});
function limitText(field, maxChar){
var ref = $(field),
val = ref.val();
if ( val.length >= maxChar ){
ref.val(function() {
console.log(val.substr(0, maxChar))
return val.substr(0, maxChar);
});
}
}
Demo
I need to place a limit for the number of commas entered in the text area
I tried these links but it dint help
Limit the number of commas in a TextBox
The comma in the textBox
Iam using php. Is it possible to implement php or javascript here.
You should wait for DOMContentLoaded event, and afterwards bind the textarea with a callback for the "input" event:
const MAX_COMMAS = 3;
document.addEventListener("DOMContentLoaded", function(event) {
let textarea = document.getElementById('textbox');
textarea.addEventListener("input", function(event) {
let matchCommas = this.value.match(/,/g);
if (Array.isArray(matchCommas) && matchCommas.length > MAX_COMMAS) {
this.value = this.value.substring(0, this.value.length - 1); // remove the last comma
alert("MAX COMMAS EXCEEDED!");
}
});
});
<textarea id="textbox" cols="40" rows="4"></textarea>
HTML:
<textarea id="textarea" rows="20"></textarea>
JavaScript:
var textarea = document.getElementById('textarea');
var maxCommas = 5;
var filterCommas = function(event) {
var textCommas = this.value.match(/[,]/g);
if(textCommas.length >= maxCommas && event.key === ',') {
event.preventDefault();
return false;
}
}
textarea.onkeydown = filterCommas;
textarea.onkeypress = filterCommas;
textarea.onchange = filterCommas;`
https://jsfiddle.net/xL04qb8c/2/
Hi have a form with a few fields. Amongst them:
<div>
<label for="phoneNumber" class="label">Phone Number</label>
<input name="phoneNumber" type="text" id="phoneNumber" size="13" style="float:left;margin-right:10px;">
</div>
<div>
<input type="checkbox" name="activePN" id="activePN" checked >
<label for="activePN">Active</label>
</div>
The, when the form is submited, I want to validate the input and write next to each field for whichever field didn't validate. Like this:
$('#submit').click(function () {
var proceed = true;
var strippedPN = $('#phoneNumber').val().replace(/[^\d\.]/g, '').toString(); //strips non-digits from the string
if (strippedPN.length !== 10) {
$('#phoneNumber').text('<p>Phone number has to be 10 digits long.</p>')
proceed = false;
}
...
...
...
});
I was hopping that adding those <p> </p> tags would do it. But they don't...
Note: I also tried with html() instead of text() and with activePN instead of phoneNumber.
Use .after().
$('#phoneNumber').after('<p>Phone number has to be 10 digits long.</p>')
It might be wise to add a class to your p tag too, so you can remove them when the number is edited to be correct.
Try:
$('#submit').click(function(){
var proceed = true;
var strippedPN = $('#phoneNumber').val().replace(/[^\d\.]/g, ''); //strips non-digits from the string - already a String
if(strippedPN.length !== 10){
$('#phoneNumber').after('<p>Phone number has to be 10 digits long.</p>')
proceed = false;
}
}
Its best to use jqueryvalidation plugin.
But in some scenario may be you need to show validation message using custom code, then below may help.
Code
var errorSeen = false;
$('#txtname').keyup(function (e) {
var validInput = false; // TODO set your validation here
if (!validInput) {
var errorMessageVisible = $(".validationMessage").is(":visible");
if (errorSeen === false && errorMessageVisible === false) {
$('#txtname').style.borderColor = "red";
$('#txtname').after("<span class='validationMessage' style='color:red;'>
Name is required.</span>");
errorSeen = true;
}
}
else {
$('#txtname').style.borderColor = "";
var errorMessageVisible = $(".validationMessage").is(":visible");
if (errorMessageVisible)
$(".validationMessage").remove();
errorSeen = false;
}
});
I have this function which i am using to compare two input fields. If the user enters the same number in both the text field. On submit there will be an error. Now i would like to know if there is a way to allow same number but not higher than or lower the value of the previous text box by 1. For example if user enters 5 in previous text box, the user can only input either 4, 5 or 6 in the other input field.Please give me some suggestions.
<script type="text/javascript">
function Validate(objForm) {
var arrNames=new Array("text1", "text2");
var arrValues=new Array();
for (var i=0; i<arrNames.length; i++) {
var curValue = objForm.elements[arrNames[i]].value;
if (arrValues[curValue + 2]) {
alert("can't have duplicate!");
return false;
}
arrValues[curValue] = arrNames[i];
}
return true;
}
</script>
<form onsubmit="return Validate(this);">
<input type="text" name="text1" /><input type="text" name="text2" /><button type="submit">Submit</button>
</form>
A tidy way to do it which is easy to read:
var firstInput = document.getElementById("first").value;
var secondInput = document.getElementById("second").value;
if (firstInput === secondInput) {
// do something here if inputs are same
} else if (firstInput > secondInput) {
// do something if the first input is greater than the second
} else {
// do something if the first input is less than the second
}
This allows you to use the values again after comparison as variables (firstInput), (secondInput).
Here's a suggestion/hint
if (Math.abs(v1 - v2) <= 1) {
alert("can't have duplicate!");
return false;
}
And here's the jsfiddle link, if you want to see the answer
Give them both IDs.
Then use the
if(document.getElementById("first").value == document.getElementById("second").value){
//they are the same, do stuff for the same
}else if(document.getElementById("first").value >= document.getElementById("second").value
//first is more than second
}
and so on.