I am programming a web application which accepts barcodes from a barcode reader in an input field. The user can enter as many barcodes that s/he wants to (i.e. there is no reason for a predefined limit). I have come up with a brute force method which creates a predefined number of hidden input fields and then reveals the next one in sequence as each barcode is entered. Here is the code to do this:
<form id="barcode1" name="barcode" method="Post" action="#">
<div class="container">
<label for="S1">Barcode 1   </label>
<input id="S1" class="bcode" type="text" name="S1" onchange="packFunction()" autofocus/>
<label for="S2" hidden = "hidden">Barcode 2   </label>
<input id="S2" class="bcode" type="text" hidden = "hidden" name="S2" onchange="packFunction()" />
<label for="S3" hidden = "hidden">Barcode 3   </label>
<input id="S3" class="bcode" type="text" hidden = "hidden" name="S3" onchange="packFunction()" />
<label for="S4" hidden = "hidden">Barcode 4   </label>
<input id="S4" class="bcode" type="text" hidden = "hidden" name="S4" onchange="packFunction()" />
<label for="S5" hidden = "hidden">Barcode 5   </label>
<input id="S5" class="bcode" type="text" hidden = "hidden" name="S5" onchange="packFunction()" />
</div>
<div class="submit">
<p><input type="submit" name="Submit" value="Submit"></p>
</div>
</form>
<script>
$(function() {
$('#barcode1').find('.bcode').keypress(function(e){
// to prevent 'enter' from submitting the form
if ( e.which == 13 )
{
$(this).next('label').removeAttr('hidden')
$(this).next('label').next('.bcode').removeAttr('hidden').focus();
return false;
}
});
});
</script>
This seems to be an inelegant solution. It would seem to be better to create a new input field after each barcode has been entered. I have tried creating new input elements in the DOM using jQuery, and I can get the new input element to show. But it uses the onchange event, which detects changes in the original input field. How do I transfer focus and detect onchange in the newly created input field? Here is the code that I have played with to test out the idea:
<div>
<input type="text" id="barcode" class="original"/>
</div>
<div id="display">
<div>Placeholder text</div>
</div>
<script src="./Scripts/jquery-2.2.0.min.js"></script>
$(function () {
$('#barcode').on('change', function () {
$('#display').append('<input id='bcode' class='bcode' type='text' name='S1' autofocus/>')
});
});
</script>
Once I have these barcodes, I pack them into array which I then post them to a server-side script to run a mySQL query to retrieve data based on the barcodes, and then post that back to the client. So part of what I have to achieve is that each barcode that is entered into the different input fields need to be pushed into an array.
Is there an elegant way to accomplish the creation of input fields dynamically and then detecting changes in those to create yet more input fields?
The dynamic update you have tried out is all right. If you must push it into an array on submit you have to prevent default of form submit, serialize the form and then make an ajax request.
Heres an example:
$('form').on('submit',function(e){
e.preventDefault();
var formData = $(this).serializeArray();//check documentation https://api.jquery.com/serializeArray/ for more details
$.ajax({
type:'post',
url:<your url>//or you could do $('form').attr('action')
data:formData,
success:function(){}//etc
})
});
If you do not display the barcodes in the html you can skip the input fields and store the read barcodes in an array[]. Not everything that happens in javascript has to be displayed in the website (View) . i do not know what code you use to scan the barcode but you do not need the input-elements at all.
See the example on this site https://coderwall.com/p/s0i_xg/using-barcode-scanner-with-jquery
instead of console.log() the data from the barcode scanner can simply be saved in an array[] and be send from there.
If you want to create elements dynamcially see this thread: dynamically create element using jquery
The following code adds the p-element with the label "Hej" to the div "#contentl1"
`$("<p />", { text: "Hej" }).appendTo("#contentl1");`
UPDATE: I added some simple CSS to make each input field display on its own line.
Here's one strategy:
Listen for the enter/return key on the input box.
When the enter/return key is pressed (presumably after entering a barcode), create a new input box.
Stop listening for the enter key on the original input and start listening for it on the new input.
When a "submit all" button is pressed (or when tab is used to shift the focus from the most recent input to the "submit all" button and enter is pressed), then collect all the input values in an array.
$(function() {
var finishBarcode = function(evt) {
if (evt.which === 13) {
$(evt.target).off("keyup");
$("<input class='barcode' type='text'/>")
.appendTo("#barcodes")
.focus()
.on("keyup", finishBarcode);
}
};
var submitBarcodes = function(evt) {
var barcodesArr = $(".barcode").map(function() {
return $(this).val();
}).get();
$("#display").text("Entered Barcodes: " + barcodesArr);
};
var $focusedInput = $('.barcode').on("keyup", finishBarcode).focus();
var $button = $('#submitAll').on("click", submitBarcodes);
});
input.barcode {
display: block;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
<li>Type barcode into input box</li>
<li>To enter barcode and allow new entry, press Return</li>
<li>To submit all barcodes, either press tab and then return or click Submit button</li>
</ul>
<div id="barcodes"><input type="text" class="barcode" /></div>
<div><button id="submitAll">Submit all barcodes</button></div>
<div id="display">Placeholder text</div>
Related
I'm building a simple tagging system for an text input field, here's what it looks like.
At the moment, the next tag is being added before the input field, but I'd like it to appear within the input field, so that if the users hits backsapce, it will delete the tag. If that makes sense. I'm not sure how to get the span to appear inside of the input field, here's the code:
<div id="formWrapper" class="ui-widget">
<form id="searchForm" action="#">
<fieldset>
<legend>Test search form</legend>
<span>Search</span>
<div id="searchBoxDiv" class="ui-helper-clearfix">
<button type="button" id="savedSearchButton">Test</button>
<input id="searchBox" type="text" autocomplete="false">
</div>
</fieldset>
</form>
</div>
function addSearchTerm(e, ui) {
var searchTerm = ui.item.value;
var span = $("<span>").text(searchTerm);
var a = $("<a>").addClass("remove").addClass("testclass").attr({
href: "javascript:",
title: "Remove " + searchTerm
}).text("x").appendTo(span);
span.insertBefore("#searchBox");
}
I've tried various combinations of insert, append but I don't seem to be able to get anything inside of the input, except text. I'm guessing I'll have to do something where the input field is within another , but I'm really not sure how.
Thanks
I am using jQuery Mobile and am attempting to use HTML5 form field validation to perform inline form field validation. I am doing this because I really like the way that the browser reports issues in the bubble and I don't think it is very user friendly to wait until someone has completed filling out a form and then tell them what is wrong. Here is my HTML:
<form id="frmMain" action="#">
<input type="checkbox" data-enhance="false" value="1" id="cbxFB" />
<label for="cbxFB">
<span class="formsubtext">Check this box to use Facebook information to help fill out this registration. Once registered you will be able to use the Facebook login button.</span>
</label>
<label for="tbEmail">*Email</label><input type="email" id="tbEmail" required autofocus placeholder="example#address.com" />
<label for="tbPassword">*Password</label><input type="password" id="tbPassword" required />
<div class="formsubtext" style="margin-top:1px; padding-top:0px; margin-bottom:10px">Minimum of 6 characters, one capital character, and one lower case character.</div>
<label for="tbPasswordConfirm">*Password Confirm</label><input type="password" id="tbPasswordConfirm" required />
<label for="tbPin">*Account Pin</label><input type="password" pattern="[0-9]{4}" id="tbPin" required placeholder="####" />
<div class="formsubtext" style="margin-top:1px; padding-top:0px; margin-bottom:10px">A four digit number that you will remember. This value will be needed to perform sensitive tasks within the application.</div>
<label for="tbFName">*First Name</label><input type="text" id="tbFName" required />
<label for="tbLName">*Last Name</label><input type="text" id="tbLName" required />
<label for="tbPhone">Phone Number</label><input type="tel" id="tbPhone" pattern="\d{3}[\-]\d{3}[\-]\d{4}" placeholder="###-###-####" style="margin-bottom:1px; padding-bottom:0px;" />
<div class="formsubtext" style="margin-top:1px; padding-top:0px; margin-bottom:20px;">Used at your option when you schedule an appointment with a service provider</div>
<div style="display:none;"><label for="tbfbID">Facebook ID</label><input type="text" id="tbfbID" /></div>
<input type="submit" id="btnMainNext" data-icon="arrow-r" data-iconpos="right" value="Next" data-theme="c" class="ui-btn-c ui-btn ui-corner-all" />
</form>
For the confirm password form field I have the following event defined:
$("#tbPasswordConfirm").on("change", function (event) {
var password = $("#tbPassword").val();
var passwordconfirm = $("#tbPasswordConfirm").val();
if (password != passwordconfirm) {
$("#tbPasswordConfirm")[0].setCustomValidity("The value entered does not match the previous password entered.");
$("#btnMainNext").click();
}
else {
$("#tbPasswordConfirm")[0].setCustomValidity("");
}
$(this).focus().select();
})
My problem is that when the user enters something into the field and moves to the next field the HTML form validation shows the error message for the next field (which is required). I want it to show the message for the field they just left. How do I stop the focus from moving to the next field so that the bubble message that shows up is from the field they just entered the data into? As you can see I have tried setting the focus but that does not work. Any help would be greatly appreciated.
You can stop focus from moving to the next field but you can't trigger native validation UI or error message unless you click submit button.
To stop focus from moving next field, after you set the custom validity on the field, you can use:
$('#tbPasswordConfirm').blur(function(event) {
event.target.checkValidity();
}).bind('invalid', function(event) {
setTimeout(function() { $(event.target).focus();}, 50);
});
The blur() function will check the validity on blur and if it would be invalid, the corresponding function in bind() would set the focus back to that element.
Solved it
Fiddle
$(function() {
$("#tbPasswordConfirm").on("input", function(event) {
var thisField = $("#tbPasswordConfirm")[0],
theForm = $("#frmMain")[0],
password = $("#tbPassword").val(),
passwordconfirm = $(this).val(),
custom = password === passwordconfirm ? "" : "The value entered does not match the previous password entered.";
thisField.setCustomValidity(custom);
if (!theForm.checkValidity()) theForm.reportValidity();
});
});
You can use html tabindex attr to manipulate which element will get the focus when you click tab character. See docs to how to use it.
For example, if you make your password confirm input as tabindex="5", you can add tabindex="6" to the <label for="tbPin"> element to prevent next input from focusing right after.
I'm trying to add/remove items dynamically but I can't take the values of all the elements of the array.
Basically I have this form
<form action="" method="post">
<div class="input_fields_wrap">
<div>
<label> <span>Team name </span>
<input type="text" class="input-field" name="teams[]"> </label>
</div>
</div>
<span id="num_teams"></span> <label><span> </span>
<input type="submit" value="Add Team" class="add_field_button" name="add_field_button">
<input type="submit" name="next" value="Next" />
</label>
</form>
It just shows an input box where I'd have to insert the team name and two buttons ; one to go to the next page, and the other one to add a new text field using jquery.
Here it is the jquery script
<script type="text/javascript">
$(document).ready(function() {
var wrapper = $(".input_fields_wrap"); //Fields wrapper
var add_button = $(".add_field_button"); //Add button ID
var x = 1; //initlal text box count
$(add_button).click(function(e){ //on add input button click
e.preventDefault();
var max_fields = $('#n_teams').val(); //maximum input boxes allowed
if(x < max_fields){ //max input box allowed
x++; //text box increment
$(wrapper).append('<div><label><span>Team Name </span><input type="text" class="input-field" name="teams[]"> Delete</label></div>'); // add input box
$("#num_teams").html('Number of Teams: '+x);
}
});
$(wrapper).on("click",".remove_field", function(e){ //user click on remove text
e.preventDefault(); $(this).parent('label').remove(); x--;
$("#num_teams").html('Number of Teams: '+x);
})
});
</script>
The script above works perfectly: it adds and removes textfields.
The problem that I have now is that I can't take the values of the array 'teams[]' .
in a
if(isset($_POST['next']))
even if I try to take the values manually like
echo $_POST["teams"][0]; and
echo $_POST["teams"][1]; ect...
It just takes the first value (i.e. the one I don't add using jquery). It doesn't 'see' the jquery text fields added.
Of course my final aim is to insert 'teams[]' in a mysql table, but for now I noticed that I can't either take the values.
Where am I wrong ?
EDIT - SOLVED
It was a very stupid error I made in the html code. Actually there was a <div> before of the <form> that caused all the troubles. After a very accurate analysis , trying every single piece of code alone, I finally got that I just had to move the <form> above two <div> to make the code work.
I do apologize to everyone, silly me!
Instead of using name="teams[]" use name="teams" and on server side use:
$_POST['teams']
which should give you the comma separated list.
var wrapper = $(".input_fields_wrap").first();
I have a form that may only be one page or may be two pages depending on whether it is a single individual or two people applying. What I am doing right now is enabling a link that allows the user to get to the next group of form elements for their co-applicant via an onchange event that shows the link that will slideToggle the first users inputs and show the inputs for the additional users. It's a pretty lengthy form so I cut it down to a few elements so I could fiddle it out:
Das Fiddle is here
<form method="POST" id="refiLoanForm" action="mailto:i#i.com">
<!--START PRIMARY APPLICANT -->
<div id="primary-applicant">
<label>
Application Type
<select name="applicationType" id="applicationType" class="wider" required>
<option value="individual">Individual</option>
<option value="joint">Joint</option>
</select>
</label>
<br>
<label for="loan-amount" id="loan-amount-label">Requested Finance Amount
<input type="text" id="loan-amount" name="loanAmount" required/></label>
<br>
<label for="remaining-term">Current Loan Remaining Term
<input type="text" id="remaining-term" name="remainingTerm" max="3" size="3" required class="override"/>
</label>
<br>
CONTINUE TO CO-APPLICANT
</div>
<!--END PRIMARY APPLICANT -->
<!--START CO_APPLICANT -->
<div id="co-applicant" style="display: none">
Back to Primary Applicant
<br>
<label for="co-first-name">First Name
<input type="text" id="co-first-name" name="coApplicantGivenName" maxlength="32" required/>
</label>
<br>
<label for="co-last-name">Last Name
<input type="text" id="co-last-name" name="coApplicantFamilyName" maxlength="32" required/>
</label>
</div>
JS:
$('#refiLoanForm').validate({
onkeyup: false,
ignore: ":disabled",
submitHandler: function (form) { // for demo
alert('valid form');
return false;
}
});
$("#singleSubmitBtnLoan").bind('click', function () {
$('#refiLoanForm').valid();
});
//Handle the content being shown
$("#singleSubmitBtnLink2").on('click', function () {
$("#primary-applicant").slideToggle("slow");
$("#co-applicant").slideToggle("slow");
});
$("#backToPrimary").on('click', function () {
$("#primary-applicant").slideToggle("slow");
$("#co-applicant").slideToggle("slow");
});
$('#applicationType').on('change', function() {
if ($(this).val() === 'joint') {
$('.primaryApplicantSwitch').slideToggle("slow");
$('.jointApplicantSwitch').slideToggle("slow");
} else {
$('.primaryApplicantSwitch').slideToggle("slow");
$('.jointApplicantSwitch').slideToggle("slow");
}
});
So in theory, the user can enter the fields and hit submit and the form is either valid or throws some errors. Or, the user can add a co-applicant, and validate the form on the link click before toggling to the next group of inputs.
Any ideas on how I would bind all of this to the one button and get it to play nice with jquery.validate?
You cannot dynamically "toggle" the rules of input fields.
However, you can use the .rules() method to dynamically add/change/remove rules, which essentially mimics the behavior of a toggle.
Also, since you're talking about fields that are hidden, you'll need to disable the option that makes validation ignore all hidden fields.
ignore: []
I have a text input area attached to a radio button in an HTML form as shown here:
<fieldset class="w100">
<div class="rowElem align-left">
<input type="radio" id="plan_height" name="plan_height" value="standard6'2"" checked >
<label>Standard 6'2"</label>
</div>
<div class="rowElem align-left">
<input type="radio" id="other_text" name="plan_height" value="Other height" onclick="document.getElementById('other_height').focus();" >
<input type="text" id="other_height" name="plan_height" value="Enter custom height" onFocus="if(this.value=='Enter custom height') this.value='';" onBlur="if(this.value=='') this.value='Enter custom height';">
<label for="other_text">Other</label>
</div>
</fieldset>
If the user selects the second radio option for "Other," I would like the text box to automatically be in focus for them to enter a value. Also, if the user clicks on the text box to enter a value, I would like the radio button for this to automatically be selected for them.
I've tried using onBlur or onChange or onKeyup on the form element, but can't seem to get it working.
Have you tried the onclick event: onclick="document.getElementById('other_height').focus();"
Check this out http://jsfiddle.net/tzj6Z/7/
For cross browser support you'll have to add broswer detection like this
if(navigator.userAgent.indexOf('Firefox')>=0) { // Firefox
focus_event = 'focus';
} else if (navigator.userAgent.indexOf('Safari')) { // Opera, Safari/Chrome
focus_event = 'DOMFocusIn';
} else { // IE
focus_event = 'onfocusin';
}