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/
I have two inputs which I want to have the same input values when one is typed in. It kind of works but not all the time.
I will leave the code here:
$('#google-querynav').keypress(function() {
var text = $(this).val();
$('#google-querystat').attr('value', text);
})
$('#google-querystat').keypress(function() {
var text = $(this).val();
$('#google-querynav').attr('value', text);
})
Thanks for the help
You need to use change and keyup event to do this work. Also you can use val() method to change value of input instead of attr("value").
$('#google-querynav').on("change keyup", function() {
var text = $(this).val();
$('#google-querystat').val(text);
})
$('#google-querystat').on("change keyup",function() {
var text = $(this).val();
$('#google-querynav').val(text);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="google-querynav"/>
<input type="text" id="google-querystat"/>
You can use shorter code to do this
$('#google-querynav, #google-querystat').on("keyup change", function() {
var text = $(this).val();
$('#google-querynav, #google-querystat').val(text);
})
Test it in jsfiddle
Use keyup instead of keypress. And use val instead of attr
$('#google-querynav').on('keyup change', function() {
var text = $(this).val();
$('#google-querystat').val(text);
})
$('#google-querystat').on('keyup change', function() {
var text = $(this).val();
$('#google-querynav').val(text);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="google-querynav">
<input id="google-querystat">
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;
});
$('#button').prop('disabled', bool); // and apply the boolean here to enable
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='text' />
<input type='text' />
<input type='text' />
<input type='text' />
<input type='text' />
<input type='button' id='button' value='button' />
I have this line of HTML
<input type="text" name="addQty" size="1"
class="addQty" value="0"
onclick="$(this).val('')"
onblur="itmQtyChk($(this).val())" />
the itmQtyChk function does this:
function itmQtyChk( qty ) {
if( qty == "") {
$(this).val("0");
} else {
$(this).val(qty);
}
}
My problem is I want it to return the original value to the input text if they exit the field and don't change anything, but it is not working.
Thank you for any help.
this in itmQtyChk function is not referring to the input but to the window object.
Change the function to accept the input as parameter:
function itmQtyChk(input) {
if (input.val() == "") {
input.val("0");
}
// the else part is not needed
}
with the onblur event also:
onblur="itmQtyChk($(this))"
Check this fiddle, it has lots of room for improvement, but it can help you:
http://jsfiddle.net/eDuKr/1/
$(function(){
var cacheQty;
$('.addQty').click(function(){
cacheQty = $(this).val();
$(this).val('');
}).blur(function(){
if ($(this).val() === ''){
$(this).val(cacheQty);
}else{
cacheQty = $(this).val();
}
});
});
In jQuery, is there a simple way to test if any of a form's elements have changed?
Say I have a form and I have a button with the following click() event:
$('#mybutton').click(function() {
// Here is where is need to test
if(/* FORM has changed */) {
// Do something
}
});
How would I test if the form has changed since it was loaded?
You can do this:
$("form :input").change(function() {
$(this).closest('form').data('changed', true);
});
$('#mybutton').click(function() {
if($(this).closest('form').data('changed')) {
//do something
}
});
This rigs a change event handler to inputs in the form, if any of them change it uses .data() to set a changed value to true, then we just check for that value on the click, this assumes that #mybutton is inside the form (if not just replace $(this).closest('form') with $('#myForm')), but you could make it even more generic, like this:
$('.checkChangedbutton').click(function() {
if($(this).closest('form').data('changed')) {
//do something
}
});
References: Updated
According to jQuery this is a filter to select all form controls.
http://api.jquery.com/input-selector/
The :input selector basically selects all form controls.
If you want to check if the form data, as it is going to be sent to the server, have changed, you can serialize the form data on page load and compare it to the current form data:
$(function() {
var form_original_data = $("#myform").serialize();
$("#mybutton").click(function() {
if ($("#myform").serialize() != form_original_data) {
// Something changed
}
});
});
A real time and simple solution:
$('form').on('keyup change paste', 'input, select, textarea', function(){
console.log('Form changed!');
});
You can use multiple selectors to attach a callback to the change event for any form element.
$("input, select").change(function(){
// Something changed
});
EDIT
Since you mentioned you only need this for a click, you can simply modify my original code to this:
$("input, select").click(function(){
// A form element was clicked
});
EDIT #2
Ok, you can set a global that is set once something has been changed like this:
var FORM_HAS_CHANGED = false;
$('#mybutton').click(function() {
if (FORM_HAS_CHANGED) {
// The form has changed
}
});
$("input, select").change(function(){
FORM_HAS_CHANGED = true;
});
Looking at the updated question try something like
$('input, textarea, select').each(function(){
$(this).data("val", $(this).val());
});
$('#button').click(function() {
$('input, textarea, select').each(function(){
if($(this).data("val")!==$(this).val()) alert("Things Changed");
});
});
For the original question use something like
$('input').change(function() {
alert("Things have changed!");
});
$('form :input').change(function() {
// Something has changed
});
Here is an elegant solution.
There is hidden property for each input element on the form that you can use to determine whether or not the value was changed.
Each type of input has it's own property name. For example
for text/textarea it's defaultValue
for select it's defaultSelect
for checkbox/radio it's defaultChecked
Here is the example.
function bindFormChange($form) {
function touchButtons() {
var
changed_objects = [],
$observable_buttons = $form.find('input[type="submit"], button[type="submit"], button[data-object="reset-form"]');
changed_objects = $('input:text, input:checkbox, input:radio, textarea, select', $form).map(function () {
var
$input = $(this),
changed = false;
if ($input.is('input:text') || $input.is('textarea') ) {
changed = (($input).prop('defaultValue') != $input.val());
}
if (!changed && $input.is('select') ) {
changed = !$('option:selected', $input).prop('defaultSelected');
}
if (!changed && $input.is('input:checkbox') || $input.is('input:radio') ) {
changed = (($input).prop('defaultChecked') != $input.is(':checked'));
}
if (changed) {
return $input.attr('id');
}
}).toArray();
if (changed_objects.length) {
$observable_buttons.removeAttr('disabled')
} else {
$observable_buttons.attr('disabled', 'disabled');
}
};
touchButtons();
$('input, textarea, select', $form).each(function () {
var $input = $(this);
$input.on('keyup change', function () {
touchButtons();
});
});
};
Now just loop thru the forms on the page and you should see submit buttons disabled by default and they will be activated ONLY if you indeed will change some input value on the form.
$('form').each(function () {
bindFormChange($(this));
});
Implementation as a jQuery plugin is here https://github.com/kulbida/jmodifiable
var formStr = JSON.stringify($("#form").serializeArray());
...
function Submit(){
var newformStr = JSON.stringify($("#form").serializeArray());
if (formStr != newformStr){
...
formChangedfunct();
...
}
else {
...
formUnchangedfunct();
...
}
}
You need jQuery Form Observe plugin. That's what you are looking for.
Extending Udi's answer, this only checks on form submission, not on every input change.
$(document).ready( function () {
var form_data = $('#myform').serialize();
$('#myform').submit(function () {
if ( form_data == $(this).serialize() ) {
alert('no change');
} else {
alert('change');
}
});
});
$('form[name="your_form_name"] input, form[name="your_form_name"] select').click(function() {
$("#result").html($(this).val());
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h2>Form "your_form_name"</h2>
<form name="your_form_name">
<input type="text" name="one_a" id="one_a" value="AAAAAAAA" />
<input type="text" name="one_b" id="one_b" value="BBBBBBBB" />
<input type="text" name="one_c" id="one_c" value="CCCCCCCC" />
<select name="one_d">
<option value="111111">111111</option>
<option value="222222">222222</option>
<option value="333333">333333</option>
</select>
</form>
<hr/>
<h2>Form "your_other_form_name"</h2>
<form name="your_other_form_name">
<input type="text" name="two_a" id="two_a" value="DDDDDDDD" />
<input type="text" name="two_b" id="two_b" value="EEEEEEEE" />
<input type="text" name="two_c" id="two_c" value="FFFFFFFF" />
<input type="text" name="two_d" id="two_d" value="GGGGGGGG" />
<input type="text" name="two_e" id="two_f" value="HHHHHHHH" />
<input type="text" name="two_f" id="two_e" value="IIIIIIII" />
<select name="two_g">
<option value="444444">444444</option>
<option value="555555">555555</option>
<option value="666666">666666</option>
</select>
</form>
<h2>Result</h2>
<div id="result">
<h2>Click on a field..</h2>
</div>
In addition to above #JoeD's answer.
If you want to target fields in a particular form (assuming there are more than one forms) than just fields, you can use the following code:
$('form[name="your_form_name"] input, form[name="your_form_name"] select').click(function() {
// A form element was clicked
});
Try this:
<script>
var form_original_data = $("form").serialize();
var form_submit=false;
$('[type="submit"]').click(function() {
form_submit=true;
});
window.onbeforeunload = function() {
//console.log($("form").submit());
if ($("form").serialize() != form_original_data && form_submit==false) {
return "Do you really want to leave without saving?";
}
};
</script>
First, I'd add a hidden input to your form to track the state of the form. Then, I'd use this jQuery snippet to set the value of the hidden input when something on the form changes:
$("form")
.find("input")
.change(function(){
if ($("#hdnFormChanged").val() == "no")
{
$("#hdnFormChanged").val("yes");
}
});
When your button is clicked, you can check the state of your hidden input:
$("#Button").click(function(){
if($("#hdnFormChanged").val() == "yes")
{
// handler code here...
}
});