I have an HTML table with a checkbox in each row.
I want to loop over the table and see if there are any checkboxes that are checked.
The following does not work:
$("#save").click( function() {
$('#mytable tr').each(function (i, row) {
var $actualrow = $(row);
checkbox = $actualrow.find('input:checked');
console.log($checkbox);
});
This prints in the console the following:
[prevObject: jQuery.fn.jQuery.init[1], context: tr, selector: "input:checked", constructor: function, init: function…]
per row regardless of whether any checkbox is checked.
Update
Same issue with:
$('#mytable tr').each(function (i, row) {
var $actualrow = $(row);
$checkbox = $actualrow.find(':checkbox:checked');
console.log($checkbox);
});
This question is related to
javascript
jquery
html
Use this instead:
$('#save').click(function () {
$('#mytable').find('input[type="checkbox"]:checked') //...
});
Let me explain you what the selector does:
input[type="checkbox"] means that this will match each <input /> with type attribute type equals to checkbox
After that: :checked will match all checked checkboxes.
You can loop over these checkboxes with:
$('#save').click(function () {
$('#mytable').find('input[type="checkbox"]:checked').each(function () {
//this is the current checkbox
});
});
Here is demo in JSFiddle.
And here is a demo which solves exactly your problem http://jsfiddle.net/DuE8K/1/.
$('#save').click(function () {
$('#mytable').find('tr').each(function () {
var row = $(this);
if (row.find('input[type="checkbox"]').is(':checked') &&
row.find('textarea').val().length <= 0) {
alert('You must fill the text area!');
}
});
});
use .filter(':has(:checkbox:checked)' ie:
$('#mytable tr').filter(':has(:checkbox:checked)').each(function() {
$('#out').append(this.id);
});
The following code snippet enables/disables a button depending on whether at least one checkbox on the page has been checked.
$('input[type=checkbox]').change(function () {
$('#test > tbody tr').each(function () {
if ($('input[type=checkbox]').is(':checked')) {
$('#btnexcellSelect').removeAttr('disabled');
} else {
$('#btnexcellSelect').attr('disabled', 'disabled');
}
if ($(this).is(':checked')){
console.log( $(this).attr('id'));
}else{
console.log($(this).attr('id'));
}
});
});
Here is demo in JSFiddle.
Source: Stackoverflow.com