Develop Reference

JSTree with Datatables

I have two columns on a page, with a checkbox jstree on the left and a table using datatables on the right. The table rows and tree are all loaded at startup.
I would like to show a row when the node is selected on the tree and hide the row when its unchecked and I'm using a class for this. I am having problems with looping though all the rows in a datatables and setting a class, so I can filter it. This is the code I'm using below, but its not working. I can't get any id for the table row.
table.rows().iterator( 'row', function ( context, index ) {
var tableNode = $(this.row(index).node());
tableNode.removeClass('VisibleRow').removeClass('HiddenRow').addClass('HiddenRow');
var id = tableNode.id;
var treeNode = data.instance.get_node(id);
if(treeNode != undefined){
var currentId = '#row-' + node.id;
var rowInTable = table.row(currentId).node();
$(rowInTable).removeClass("HiddenRow");
$(rowInTable).addClass("VisibleRow");
}
});
Let me know if there are better ways to do this.

I believe you can do it with the snippet below. The rows iteration is jQuery based, there is no DataTables-specific logic there.
Also check demo - Fiddle Demo
var $tableRows = $('#yourTableId').find('tr');
$('#yourTreeContainer').on('select_node.jstree', function(e, data) {
$tableRows.each(function() {
if (this.id === '#row-' + data.node.id) {
$(this).removeClass('HiddenRow');
} else {
$(this).addClass('HiddenRow');
}
});
});

I created same with some changes and it works fine, but even with hidden row I don't want datatable showing empty pages. Any advice, please?
this my code
$('#jstree')
.jstree({
core: {
data: treeData
},
checkbox: {
three_state : false, // to avoid that fact that checking a node also check others
whole_node : false, // to avoid checking the box just clicking the node
tie_selection : false // for checking without selecting and selecting without checking
},
"plugins" : ["checkbox","conditionalselect"]
})
.on("check_node.jstree uncheck_node.jstree", function(e, data) {
$tableRows.each(function(){
//$(this).addClass('HiddenRow'); //should not be there
if( this.id === data.node.id ) {
if(data.node.state.checked ){
//alert("removeClass");
$(this).removeClass('HiddenRow');
}else{
//alert("addClass");
$(this).addClass('HiddenRow');
};
}else{
}
})
})
This is the link http://jsfiddle.net/cf7tata9/56/#&togetherjs=jqPTfx3gpk

Hide buttons related to empty textareas (selecting issue)

I'm struggling with a jQuery selection: I have a table that contains these columns (more or less)
Name (input field)
Surname (input field)
Note (textarea)
Button (a button to submit the relative note)
I would like to hide all buttons whose textarea is empty (to avoid the submission). This is the table:
The DOM structure of the single row is quite simple (I think):
So, I would like to select something like "all buttons contained in a td that is a brother of a td that cointains an empty textarea"...anf anf...can I do that with a single jQuery selection or not? Thank you in advance.

Of course!
$("tr td textarea").each(function() {
if (this.value == "") {
$(this).closest("td").next("td").find("button").prop("disabled", true);
}
});

You could hide buttons onLoad with the next selector:
$('textarea:empty').parent().next('td').find('button').hide();
Or if you want to disable the buttons:
$('textarea:empty').parent().next('td').find('button').prop("disabled", true);
It would be useful to check if user has type something in the textarea while on the page, and enable or not the button:
$( $('textarea') ).blur(function() {
var button = $(this).parent().next('td').find('button');
if($(this).val() === ''){
button.prop("disabled", true);
}else{
button.prop("disabled", false);
}
});
You can check this fiddle with your table included:
http://jsfiddle.net/6B9XA/4/

try this
$('table textarea').change(function()
{
var thisval=$.trim($(this).html())
if(thisval=='')
{
$(this).parent().next().children('button').attr('disabled')
}
})

I think you should use it this way:
$("#yourtableid").find("textarea").each(function() {
if (this.value == "") {
$(this).closest("tr").find("button").prop("disabled", true);
}
});
"#yourtableid" this should be changed to your table id.
Selectors optimization for performance boost.

You can use filter() to get only the buttons who contains an empty textarea within that row
$('tr button').filter(function(){ // get all buttons
return $(this).closest('tr').find('textarea').val() == ''; // only return those that are empty
}).prop('disabled',true); // disable the buttons

Need help to display different fields with the help of bullets in HTML form

I am trying to mimic the HTML form present on this link: http://maati.tv/uploads/
I am making it to put on a company's Facebook page.
Now, the issue I am running into is that I am unable to display different fields depending upon the select radio button. I know it requires JavaScript. I've got the related script from this link: https://stackoverflow.com/a/14127709/1315163
$(".radioSelect").each(function () {
showSpecificFields(this);
});
$(".radioSelect").click(function () {
showSpecificFields(this);
});
function showSpecificFields(obj) {
if ($(obj).is(":checked")) {
var radioVal = $(obj).val();
$(".fieldsSpecific").each(function () {
if ($(this).attr('id') == radioVal) {
$(this).show();
} else {
$(this).hide();
}
});
}
}
Can anyone please help me with it? Rest of the code is in this jsFiddle: http://jsfiddle.net/DDJNc/2/
Thanks.

Your answer:
$(".radioSelect").each(function(){
showSpecificFields(this);
});
$(".radioSelect").click(function(){
showSpecificFields(this);
});
function showSpecificFields(obj){
if($(obj).is(":checked")){
var radioVal = $(obj).val();
$(".fieldsSpecific").not('.'+radioVal).each(function(){
$(this).hide();
});
$(".fieldsSpecific."+radioVal).each(function(){
$(this).show();
});
}
}
Check the HTML also
http://jsfiddle.net/DDJNc/4/
. (dot) css selector selects elements containing a given class. That class SHOULD BE present on your HTML for it to work!
Don't use the id attribute for that because you are trying to match a set of elements that belong to a class and not a single element.

How to select other checkbox when the last value is checked

Here an example of my checkbox list http://jsfiddle.net/YnM2f/
Let's say I check on G then A,B,C,D,E,F also automatic checked. How can i achieve my goals with jQuery?

First you need to get all the checkboxes based on which one is clicked. for this you need to get the parent nodes, siblings that are before it. Here is some code that will help you get there, but you'll need to work on it to make it work for you.
http://jsfiddle.net/urau8/
$("input:checkbox").on("click",function(){
if(this.checked)
$(this).parent().prevAll().each(function(){
$("input:checkbox",this).attr("checked",true);
});
});

This will check all checkboxes above a checkboxe that gets checked and uncheck all checkboxes above a checkbox that gets unchecked, given the checkbox layout that you've provided.
$('input:checkbox').click(function () {
var state = $(this).prop('checked');
var elements;
if (state) {
elements = $(this).parent().prevAll();
} else {
elements = $(this).parent().nextAll();
}
elements.each(function () {
$('input:checkbox', this).prop('checked',state);
});
});

$('input:checkbox').change(function(){
var $allParents = $(this).parent();
$allParents.prevAll().find('input').attr('checked', 'checked');
$allParents.nextAll().find('input').removeAttr('checked');
});
Try this

Well it's already been done five times, but this is what I did: http://jsfiddle.net/YnM2f/27/
$('input').click(function(){
if( $(this).is(':checked') ){
$(this).parent('p').prevAll().children('input').attr('checked',true)
}
})

Try something like this: http://jsfiddle.net/YnM2f/16/
It's a very specific solution (as in it will only work with "G"), but it should give you an idea for how to customize this code to meet your needs.
$('input:checkbox').filter(function(){
return (/ G/).test($(this).parent().text())
}).on('change', function() {
var gBox = $(this);
$('input:checkbox').prop('checked', $(gBox).prop('checked'));
});

jQuery check all not working on checkboxes

I'm writing some code that will allow the following:
1.) If a user checks a checkbox it will change the parent <tr> to have a class of selected (this can also be unchecked and remove the class)
2.) Any checkboxes that are already checked will have the class added on document load
3.) If a user checks the #checkall input then all inputs will become checked and add the class of selected (if checked again then it will unselect all and remove the class)
This is the code I have so far:
$("table input[name=choose]:checked").each(function()
{
$(this).closest("tr").addClass("selected");
});
$("table input[name=choose]").live("change", function()
{
$(this).closest("tr").toggleClass("selected");
});
if ($('#checkall:checked') == true)
{
$('#checkall').live("click", function()
{
$('table input[name=choose]').attr('checked', false);
$('table input[name=choose]').closest("tr").toggleClass("selected");
});
}
else
{
$('#checkall').live("click", function()
{
$('table input[name=choose]').attr('checked', true);
$('table input[name=choose]').closest("tr").toggleClass("selected");
});
}
The first two work fine but number 3 doesn't uncheck the checkboxes... Any ideas why? But the class part works fine??
Thanks

I guess it runs always into the else block (have you debugged this)?
Try writing this for checking if the checkbox is checked:
if ($('#checkall').attr('checked'))

Because if ($('#checkall:checked') == true) is always false..
either use
if ($('#checkall').is(':checked'))
or
if ( $('#checkall:checked').length )
Update after comment
Replace the entire third part (all the if/else) with
$('#checkall').live("change", function()
{
$('table input[name=choose]')
.attr('checked', this.checked)
.closest("tr")
.toggleClass("selected", this.checked);
});
demo at http://jsfiddle.net/gaby/KqwsZ/1/