I have a button to create input tags. When user click submit button I want to find inputs with duplicate values and change border to red.
I'm not using jquery validate plugin
html code:
<form>
<table>
<tr>
<td><input type="text" name="text[]" id="1"> <button class="add">add</button></td>
</tr>
</table>
<input type="submit" id="submit" value="check">
</form>
jQuery code:
// add input
var i = 2;
$('.add').click(function(e){
e.preventDefault();
$('table').append("<tr><td><input type="text" name="text[]" id="'+i+'"> <button class="add"></td></tr>");
i++;
});
$('#submit').click(function(){
// I do not know how to write ...
});
Here is what you want
$('#submit').click(function () {
var valid = true;
$.each($('input[type="text"]'), function (index1, item1) {
$.each($('input[type="text"]').not(this), function (index2, item2) {
if ($(item1).val() == $(item2).val()) {
$(item1).css("border-color", "red");
valid = false;
}
});
});
return valid;
});
If somebody is after this, with a lot of inputs, and is concerned with efficiency, this yields the same result (duplicates besides the first occurrence are marked):
$('#submit').click(function(){
var values = []; //list of different values
$('table input:text').each(
function() {
if (values.indexOf(this.value) >= 0) { //if this value is already in the list, marks
$(this).css("border-color", "red");
} else {
$(this).css("border-color", ""); //clears since last check
values.push(this.value); //insert new value in the list
}
}
);
});
fiddle:
https://jsfiddle.net/4s82L4vg/
Related
I have a DOM in which I want to prevent users from entering duplicate entries in html text input.
The above DOM is not in user's control. It is coming through php.
At this moment, I am focussing only on name="code[]".
This is what I have tried:
$(function(){
$('input[name^="code"]').change(function() {
var $current = $(this);
$('input[name^="code"]').each(function() {
if ($(this).val() == $current.val())
{
alert('Duplicate code Found!');
}
});
});
});
Problem Statement:
I am wondering what changes I should make in javascript code above so that when a duplicate code is entered, alert message "Duplicate code Found" should come up.
you need to add an eventlistener to each item, not an eventlistener for all. Then count inputs with same value, if there's more than 1, it's a duplicate.
Also ignore not-filled inputs.
Check following snippet:
$('input[name*="code"]').each(function() {
$(this).change(function(){
let value = $(this).val();
let count = 0;
$('input[name*="code"]').each(function() {
if ($(this).val() != '' && $(this).val() == value) {
count++;
if (count > 1) alert('duplicate');
}
});
});
$(this).addClass('e');
});
$('#createInput').on('click', function(){
let newInput = document.createElement("input");
newInput.name = 'code[]';
newInput.type = 'text';
newInput.className = 'whatever';
$('#inputGroup').append(newInput);
// repeat the eventlistener again:
$('input[name*="code"]:not(.e').each(function() {
$(this).change(function(){
let value = $(this).val();
let count = 0;
$('input[name*="code"]').each(function() {
if ($(this).val() != '' && $(this).val() == value) {
count++;
if (count > 1) alert('duplicate');
}
});
});
$(this).addClass('e');
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="inputGroup">
<input name="code-1" type="text" class="whatever">
<input name="code-2" type="text" class="whatever2">
<input name="code-3" type="text" class="whatever3">
</div>
<input type="button" id="createInput" value="Add input">
Edit:
now works with dynamically created elements. The class 'e' works as flag to not insert 2 event listeners to the same node element, otherwise they will run in cascade, provoking unwanted behaviour.
You can use something like this, that converts the jQuery object to an Array to map the values and find duplicates. I added an option to add a style to the duplicated inputs, so the user knows which ones are duplicated.
function checkDuplicates(){
var codes = $('input[name^="code"]').toArray().map(function(element){
return element.value;
})
var duplicates = codes.some(function(element, index, self){
return element && codes.indexOf(element) !== index;
});
return duplicates;
}
function flagDuplicates(){
var inputs = $('input[name^="code"]').toArray();
var codes = inputs.map(function(element){
return element.value;
});
var duplicates = 0;
codes.forEach(function(element, index){
var duplicate = element && codes.indexOf(element) !== index;
if(duplicate){
inputs[index].style.backgroundColor = "red";
inputs[codes.indexOf(element)].style.backgroundColor = "red";
duplicates++
}
});
return duplicates;
}
$('input[name^="code"]').on("change", function(){
//var duplicates = checkDuplicates(); // use this if you only need to show if there are duplicates, but not highlight which ones
var duplicates = flagDuplicates(); // use this to flag duplicates
if(duplicates){
alert(duplicates+" duplicate code(s)");
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input name="code-1" type="text">
<input name="code-2" type="text">
<input name="code-3" type="text">
I have a form that has multiple text inputs, I don't want to add id to each one as they are generated from server side code - number of fields may differ etc. I just want to be able to disable the submit button until there is text entered into each text input.
I have gotten this far, but only disables button until text entered in to one text input field - I want it to stay disabled until text entered in to all text inputs.
<script>
$(function () {
$('#button').attr('disabled', true);
$('input:text').keyup(function () {
$('#button').prop('disabled', this.value == "" ? true : false);
})
});
</script>
I have also tried $('input:text').each().keyup(function (){ - but does not make button clickable?
$('#button').attr('disabled', true);
$('input:text').keyup(function () {
var disable = false;
$('input:text').each(function(){
if($(this).val()==""){
disable = true;
}
});
$('#button').prop('disabled', disable);
});
Demo
The callback function for keyup now checks only that specific input field's value (this.value). Instead, this needs to loop through all input fields that need to be filled, and only when all have text do you change the the .prop value.
$('input:text').keyup(function () {
$('#button').prop('disabled', allFieldsAreFilled());
});
function allFieldsAreFilled() {
var allFilled = true;
// check all input text fields
$("#yourForm input:text"]).each(function () {
// if one of them is emptyish allFilled is no longer true
if ($(this).val() == "") {
allFilled = false;
}
});
return allFilled;
}
Try this:
$(function() {
var bool = true, flag = false;
$('#button').prop('disabled', bool); // use prop to disable the button
$(document).keyup(function() { // listen the keyup on the document or you can change to form in case if you have or you can try the closest div which contains the text inputs
$('input:text').each(function() { // loop through each text inputs
bool = $.trim(this.value) === "" ? true : false; // update the var bool with boolean values
if(bool)
return flag;
});
$('#button').prop('disabled', bool); // and apply the boolean here to enable
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='text' />
<input type='text' />
<input type='text' />
<input type='text' />
<input type='text' />
<input type='button' id='button' value='button' />
I want to let my two textboxes be checked before those get submitted.
like
if textbox1 >= textbox2 submit
else show errorlabel and dont submit.
How can i do this?
Provide your onclick handler's implementation to extract the value of the two text boxes, then parse them as an int.
function submitForm() {
var first = parseInt(document.getElementById("first"), 0);
var second = parseInt(document.getElementById("second"), 0);
if(first >= second) {
// ...
return true;
} else {
var hiddenTextBox = document.getElementById("error");
hiddenTextBox.style.visibility = "visible";
return false;
}
}
This assumes you have two elements with id="first" and id="second" respectively, and a hidden element with id="error"
Try it like,
$('#submitId').on('click',function(){
if $('#textbox1').val() < $('#textbox2').val()){
$('#erroLabel').show(); // showing error label
return false; // to prevent submitting form
}
});
You can make function in javascript,
<script type="text/javascript">
function checkValues()
{
var searchtext1 = document.getElementById("textbox1").value;
if(searchtext1=='')
{
alert('Enter any character');
return false;
}
var searchtext2 = document.getElementById("textbox2").value;
if(searchtext2=='')
{
alert('Enter any character');
return false;
}
}
</script>
and then in html form
<form method='GET' onSubmit="return checkValues();">
<input type="text" id= "textbox1" name="textbox1" class='textbox' >
<input type="text" id= "textbox2" name="textbox2" class='textbox' >
<input type="submit" id='submit' value="Search" class ='button' >
</form>
I have some input texts like this :
<input type="text" value="5" maxlength="12" id="qty" class="input-text qty" name="qty2050" tabindex="1">
and
<input type="text" value="0" maxlength="12" id="qty" class="input-text qty" name="qty2042" tabindex="1">
And I want to check with jquery the values of each input, to execute a function if there is a quantity different from 0 in one input.
EDIT
How can I do that on page before unlod?
Thanks for help.
try in this way-
$(window).unload(function() {
$('.input-text qty').each(function (){
var val = parseInt($(this).val(),10);
// you can use math.floor if your input value is float-
//var val = Math.floor($(this).val());
if(val !== 0)
alert(val);
});
});
$('.input-text').change( function() {
if($(this.val() != "0")){ //
action here
}
});
You shouldn't have two same IDs on a page.
Quite simple should be:
$('input.input-text.qty').each(function(){
if ($(this).val() !== '0') {
alert('Gotcha!');
return false; //quit loop since we're ok with 1 occurance
}
});
Use change(): http://api.jquery.com/change/
Example: To add a validity test to all text input elements:
$("input[type='text']").change( function() {
// check input ($(this).val()) for validity here
});
var checkInput = function() {
if(this.value !== '0') {
// do something
}
}
$(window).bind('unload', checkInput);
$('input[type=text]').change(checkInput);
I hope this helps.
If you really want this on the unload event then something like this will work (its untested), otherwise bind to whatever event you want:
$(window).unload( function() {
$('.input-text qty').each(function (){
if( $(this).val() !== '0' ) {
alert("there is a 0");
return false;//breaks out of the each loop, if this line present will only get one alert even if both fields contain 0
}
});
});
I am using a default value script (jquery.defaultvalue.js) to add default text to various input fields on a form:
<script type='text/javascript'>
jQuery(function($) {
$("#name, #email, #organisation, #position").defaultvalue("Name", "Email", "Organisation", "Position");
});
</script>
The form looks like this:
<form method="post" name="booking" action="bookingengine.php">
<p><input type="text" name="name[]" id="name">
<input type="text" name="email[]" id="email">
<input type="text" name="organisation[]" id="organisation">
<input type="text" name="position[]" id="position">
<span class="remove">Remove</span></p>
<p><span class="add">Add person</span><br /><br /><input type="submit" name="submit" id="submit" value="Submit" class="submit-button" /></p>
</form>
I am also using a script so that users can dynamically add (clone) rows to the form:
<script>
$(document).ready(function() {
$(".add").click(function() {
var x = $("form > p:first-child").clone(true).insertBefore("form > p:last-child");
x.find('input').each(function() { this.value = ''; });
return false;
});
$(".remove").click(function() {
$(this).parent().remove();
});
});
</script>
So, when the page loads there is one row with the default values. The user would then start adding information to the inputs. I am wondering if there is a way of having the default values show up in subsequent rows that are added as well.
You can see the form in action here.
Thanks,
Nick
Just call .defaultValue this once the new row is created. The below assumes the format of the columns is precticable/remains the same.
$(".add").click(function() {
var x = $("form > p:first-child");
x.clone(true).insertBefore("form > p:last-child");
x.find('input:not(:submit)').defaultvalue("Name", "Email", "Organisation", "Position");
return false;
});
You should remove ids from the input fields because once these are cloned, the ids, classes, everything about the elements are cloned. So you'll basically end up with multiple elements in the DOM with the same id -- not good.
A better "set defaults"
Personally I would remove the "set defaults plugin" if it's used purely on the site for this purpose. It can easily be re-created with the below and this is more efficient because it doesn't care about ordering of input elements.
var defaults = {
'name[]': 'Name',
'email[]': 'Email',
'organisation[]': 'Organisation',
'position[]': 'Position'
};
var setDefaults = function(inputElements)
{
$(inputElements).each(function() {
var d = defaults[this.name];
if (d && d.length)
{
this.value = d;
$(this).data('isDefault', true);
}
});
};
Then you can simply do (once page is loaded):
setDefaults(jQuery('form[name=booking] input'));
And once a row is added:
$(".add").click(function() {
var x = $("form > p:first-child");
x.clone(true).insertBefore("form > p:last-child");
setDefaults(x.find('input')); // <-- let the magic begin
return false;
});
For the toggling of default values you can simply delegate events and with the help of setDefault
// Toggles
$('form[name=booking]').delegate('input', {
'focus': function() {
if ($(this).data('isDefault'))
$(this).val('').removeData('isDefault');
},
'blur': function() {
if (!this.value.length) setDefaults(this);
}
});
Fiddle: http://jsfiddle.net/garreh/zEmhS/3/ (shows correct toggling of default values)
Okey, first of all; ids must be unique so change your ids to classes if you intend to have more then one of them.
and then in your add function before your "return false":
var
inputs = x.getElementsByTagName('input'),
defaults = ["Name", "Email", "Organisation", "Position"];
for(var i in inputs){
if(typeof inputs[i] == 'object'){
$(inputs[i]).defaultvalue(defaults[i]);
}
}