Develop Reference

How to iterate over a table cells using jQuery?

I am new to jQuery and I am trying to learn it. I want to iterate over a 9 * 9 grid alerting the values of the input boxes(total 81), row wise, column wise and grid 3 * 3 wise.
Here is what I have tried:
$("#checkBox").change(function () {
if (this.checked) {
$('table tr').each(function () {
alert($(this).td.input.val());
});
$('table tr').each(function () {
alert($(this).td.input.val());
});
} else {
alert("Check Box is unchecked. AutoCheck is disabled.");
}
});
Only else alert is working. Any comment or guidance is appreciated.

This part $(this).td.input.val() of your code will raise error since jquery object does not contains a property called td.
Try,
//The following snippet would alert the text inside of each td
$('table tr td').each(function () {
alert($(this).text());
});
//The following snippet would alert the value of each input each td
$('table tr td input').each(function () {
alert($(this).val());
});
If you want to iterate row wise then try,
$('table tr').each(function () {
$(this).find('td').each(function(){
$(this).find(':input').each(function(){
alert($(this).val());
});
});
});

table is breaking when doing item searching using jquery

i've wrote a jquery for searching datas within a table, the code is working but the table is altered. how to keep the entire row where ever the search key is matching
can anyone please tell me some solution for this
this is my jquery code
$('#resultSearch').bind('keyup', function() {
var s = new RegExp(this.value);
$('#ricGridTable td').each(function() {
if(s.test(this.innerHTML)) $(this).show();
else $(this).hide();
});
});

.hide() is breaking the table because it is setting the td to display:none;.
Instead use the visibility:hidden css attribute, and reveal again with visibility:visible.
This is done in jQuery using the .css() method $(this).css('visibility', 'hidden');
$('#resultSearch').bind('keyup', function() {
var s = new RegExp(this.value);
$('#ricGridTable td').each(function() {
if(s.test(this.innerHTML)) $(this).css('visibility', 'visible'); // Show
else $(this).css('visibility', 'hidden'); // Hide
});
});
However #HB Kautil has pointed out that you should be hiding the row tr and not the cell (td). In this case .hide() will do the job.
$(this).parents('tr').hide();

Try this,
$('#resultSearch').bind('keyup', function() {
var s = new RegExp(this.value);
$('#ricGridTable td').each(function() {
if(s.test(this.innerHTML)) $(this).parents('tr').show();
else $(this).parents('tr').hide();
});
});

How to simplify this Jquery solution?

This is my Jquery at the moment:
$("button").click(function() {
var counter = 1
$("tr td:nth-child(2)").text(counter);
click ++;
});
Instead of using;
$"(tr td:nth-child(2)").text(counter);
I would like to use .slice() in order to avoid having to do this:
$("tr td:nth-child(2)").text(counter);
$("tr td:nth-child(4)").text(counter);
$("tr td:nth-child(6)").text(counter);
$("tr td:nth-child(8)").text(counter);
Alternatively if there is a better solution I would appreciate that too. Thanks.

Try the jQuery :even selector:
$('tr td:even').text(counter);
If you want to start from index 2(and not 0), use:
$('tr td:even:not(:first)').text(counter);
DEMO

Just iterate over the elements.
$("tr td").each(function (index, element) {
if (index % 2 === 0) { // if you want to check for evens
element.text(index);
}
})

Only select one row at a time using jquery

I am using mouseover(), mouseout() and click() to highlight rows on mouseover and add a highlight class on click:
//Mouseover any row by adding class=mouseRow
$(".mouseRow tr").mouseover(function() {
$(this).addClass("ui-state-active");
});
$(".mouseRow tr").mouseout(function() {
$(this).removeClass("ui-state-active");
});
$('.mouseRow tr').click(function(event) {
$(this).toggleClass('selectRow');
});
The above code will allow a user to 'highlight' (i.e add class selectRow) to as many rows as they want. What is the best way, using jQuery, to limit the number of rows they can select to just one (so that if they click one row, then click another it will remove the 'selectRow' class from the previously selected row)?

You could remove the selectRow class from all of the tr elements except the clicked one whenever you click on one, and then toggle it on the clicked one:
$('.mouseRow tr').click(function(event) {
$('.mouseRow tr').not(this).removeClass('selectRow');
$(this).toggleClass('selectRow');
});
Here's a working example.

Use this script at end of your html,meant after </body> tag
<script>
$("tr").hover(function()
{
$(this).addClass("hover");
}, function()
{
$(this).removeClass("hover");
});
$('tr').click(function(event) {
$('tr').not(this).removeClass('click');
$(this).toggleClass('click');
});
</script>
This is css that highlight your row:
.click{
background:#FF9900;
color: white
}
.hover{
background:blue;
color: white
}
here is the link of working example
Working example
Hope this will help

While I first tried the toggleClass/removeClass-way with a '.clicked'-Class in CSS, it turned out to lag a bit. So, I did this instead which works better/faster:
$(document).on('click', '.DTA', function (event) {
$('.DTA').not(this).css('backgroundColor', "#FFF");
$(this).css('backgroundColor', "#FAA");
});
Here is the fiddle: https://jsfiddle.net/MonteCrypto/mxdqe97u/27/

$('.mouseRow tr').click(function(event) {
if (!$(this).hasClass('selectRow')){
$('.selectRow').removeClass('selectRow');
$(this).addClass('selectRow');
} else {
$('.selectRow').removeClass('selectRow');
}
});
Should do the trick. Note this still allows your toggle, if you don't want that just remove the if(){ and } else { ... } parts leaving:
$('.selectRow').removeClass('selectRow');
$(this).addClass('selectRow');

Using jquery-ui .selectable function with tbody id='selectable':
$(function() {
$("#selectable").selectable({
filter: "tr", //only allows table rows to be selected
tolerance: "fit", //makes it difficult to select rows by dragging
selected : function(event, ui) {
var rowid = "#"+ui.selected.id; //gets the selected row id
//unselects previously selected row(s)
$('tr').not(rowid).removeClass('ui-selected');
}
});
});
Each of my table rows, which were created dynamically have an id of 'task'+i

You could try this:
$('.mouseRow tr').click(function(event) {
$('.mouseRow tr').each(function(index) {
$(this).removeClass('selectRow');
});
$(this).toggleClass('selectRow');
});
You could also use the .find() method and wrap logic to check if any elements have this class first before removing all.

jquery - limiting toggleClass to 2 elements

<script type="text/javascript">
$(document).ready(function () {
$('#mytable td').click(function () {
$(this).toggleClass('newclass');
});
});
</script>
This function changes the class of the selected column in my table. It works fine.
However it should not allow more than 2 columns being selected at once (by selected I mean the column having the new class toggled - newclass). So it simply should not react if other columns are clicked.
How would I do this? I could count how many columns currently use newclass and if it's 2 then cancel the function. I'm not sure how to count them or if this is the best way to do it.

here's one way to ensure no more than 2
jsfiddle
$('#mytable td').click(function() {
var $this = $(this);
// toggle 'on' if
// 1. it doesn't already have the class and
// 2. and there are less than two set to .newclass
// toggle 'off' if
// 1. it already has the class and
// 2. and there are less than two set to .newclass
$this.toggleClass('newclass',
!$this.hasClass('newclass') &&
$('#mytable .newclass').length < 2);
})

The size() method shows you how many other elements match that selector, so you can test against that before applying toggleClass():
<script type="text/javascript">
$(document).ready(function () {
$('#mytable td').click(function () {
if ($("#mytable td.newclass").size() < 2)
{
$(this).toggleClass('newclass');
}
});
});
</script>

Try using the length property like this:
<script type="text/javascript">
$(document).ready(function () {
$('#mytable td').click(function () {
if ($('#mytable td.newclass').length < 2)){
$(this).toggleClass('newclass');
}
});
});
</script>
Hope this helps!

<script type="text/javascript">
$(document).ready(function () {
$('#mytable td').click(function () {
if(!$(this).hasClass('newClass')){
if($("td.newClass").size() < 2){
$(this).toggleClass('newclass');
}
}
else {
$(this).toggleClass('newclass');
}
});
});
</script>