Develop Reference

Javascript/Jquery: Number nested list

I have a nested list:
<ul>
<li id="1">first</li>
<li id="2">second</li>
<ul>
<li id="2-1">second nested first element</li>
<li id="2-2">second nested secondelement</li>
<li id="2-3">second nested thirdelement</li>
<ul>
<li id="2-3-1">Other</li>
</ul>
</ul>
<li id="3"i>third</li>
<li id="4">fourth</li>
</ul>
Each element has an id that indicates the position within the list. How do I generate it automatically?
Thank you.
UPDATE:
html is generated by Apache velocity without ID. I'm trying to create a method for updating the id if you move elements with jquery sortable. The structure of the id must be "1" for the first item "1-1" for the first element of the first "li". I tried using index () but I can't generate the id in the form that I need

It's not clear what you exactly want to do here, but here's an example of generating dynamic li's with dynamic id's:
HTML:
<ul id="autoGenerated">
</ul>
JS:
for(var i = 1; i < 3 ;i++){
$("#autoGenerated").append("<li id=2-" + i + ">Testing " + i + "</li>")
}
$('#autoGenerated li').click(function(){
alert($(this).attr("id"));
})
Fiddle.

jquery sortable javascript DOM

I have a nested set of objects I would like to sort. The first example, directly below, is my prototype / test. It works nicely. The outer groups sort, and the inner groups sort. the inner groups are locked inside - cant be moved outside. Just exactly like i want...
<div id="example5">
<ul class="table">
<li class="group" style="width:300px;">Group 1
<ul style="padding:0px;">
<li class="field">Group 2</li>
<li class="field">Group 3</li>
</ul>
</li>
<li class="group">Group 2</li>
<li class="group">Group 3</li>
<li class="group">Group 4</li>
</ul>
</div>
And
$("#example5 ul").sortable({
});
This is the same structure I am trying to impart in my program. Everything seems the same to me, just with some added complexity. Clearly, I am breaking it somehow. The outer groups sort, while the inner ones do not.
I think its important to note that in the previous example, the script and html are in the same file. In the second example, below, the html is dynamically created with createElement() function
<div id="logtable">
<ul id="ultable" class="table ui-sortable">
<li id="" class="groupcontainer" style="width:auto; margin:2px;">
<ul>
<li class="fieldcontainer">
<div class="fieldname"></div>
<div class="fieldgroup"></div>
<div class="fieldname"></div>
<div class="fieldname"></div>
<div class="fieldname"></div>
</li>
</ul>
</li>
<li id="a" class="groupcontainer" style="margin: 2px;"></li>
<li class="groupcontainer" style="margin: 2px;"></li>
</ul>
</div>
Javascript:
$(function() {
var fieldstart;
var fieldend;
$("#logtable ul").sortable({
start: function(event, ui) {
fieldstart = ui.item.index();
},
update: function(event, ui) {
fieldend = ui.item.index();
var fieldcount = jsonstring.tracelog.fields.length;
var fieldobjects = jsonstring.tracelog.fields;
var placed = false;
jsonstring.tracelog.fields.move(fieldstart, fieldend);
writejson();
}
});
});
Following up, this site... http://www.trace-log.com/sortworks.php is copied from the "inspect element" output. it works exactly like i want. http://www.trace-log.com is the site i generated it from. basically, add a value to the field name, it will generate a new field. entering a value in the first text box will initiate the "grouping" of fields. cant understand why this isn't working.
so as it stands, it works if i statically recreate the page, but doesnt work correctly on the dynamically created page. could it be somehow with the way the sortable function is being called?

In the second example the field container is an li and the field names are div tags. The first example you had the field container as an ul tag and the fields as li. I think this might be your issue.
see fiddle here http://jsfiddle.net/4Mk4K/3/

You can try adding a custom class to the elements you want to be sortable and then use that class in the items option of sortable.
Demo:http://jsfiddle.net/lotusgodkk/GCu2D/161/
HTML:
<div id="logtable">
<ul id="ultable" class="table ui-sortable">
<li id="" class="groupcontainer item" style="width:auto; margin:2px;">Z
<ul>
<li class="fieldcontainer">
<div class="fieldname item">A</div>
<div class="fieldgroup item">B</div>
<div class="fieldname item">C</div>
<div class="fieldname item">D</div>
<div class="fieldname item">E</div>
</li>
</ul>
</li>
<li id="a" class="groupcontainer item" style="margin: 2px;">F</li>
<li class="groupcontainer item" style="margin: 2px;">G</li>
</ul>
</div>
JS:
$(function () {
var fieldstart;
var fieldend;
$("#logtable ul").sortable({
items: '.item',//Custom class of items which needs to be sorted.
start: function (event, ui) {
fieldstart = ui.item.index();
},
});
});

After much fiddling and fussing, relocating the sortable function into the function that creates the DOM objects solved the problem. I think the way it was originally structured, some DOM objects were created AFTER the sortable function - and sortable didn't know they existed.
So yes, there was something else structurally wrong with my code. Thanks everyone for the help.

How to rearrange list?

Im trying to rearrange a list. I've got for example a list with categories:
<ul class="category">
<li class="cat1 active">cat1</li>
<li class="cat2 active">cat2</li>
<li class="cat3">cat3</li>
<li class="cat4">cat4</li>
</ul>
and a list with subjects
<ul class="subjects">
<li class="sub1">sub1</li>
<li class="sub2">sub2</li>
<li class="sub3">sub3</li>
<li class="sub4">sub4</li>
<li class="sub5">sub5</li>
<li class="sub6">sub7</li>
<li class="sub7">sub7</li>
<li class="sub8">sub8</li>
</ul>
What I want to do is when a certain category has the class active, some subjects will go to the top of the list. for example like this:
<ul class="subjects">
<li class="sub3">sub3</li>
<li class="sub5">sub5</li>
<li class="sub8">sub8</li>
<li class="sub1">sub1</li>
<li class="sub2">sub2</li>
<li class="sub4">sub4</li>
<li class="sub6">sub6</li>
<li class="sub7">sub7</li>
</ul>
I can do this with this code:
if($('li.cat1').hasClass('active')){
$('.sub3, .sub5, .sub8').insertBefore($('.subjects li:first-child'));
}
But then the real problem starts when multiple categories is active. I have done it like so:
if($('li.cat1').hasClass('active')){
$('.sub3, .sub5, .sub8').insertBefore($('.subjects li:first-child'));
}
if($('li.cat2').hasClass('active')){
$('.sub3, .sub4, .sub7').insertBefore($('.subjects li:first-child'));
}
The result is this:
<ul class="subjects">
<li class="sub4">sub4</li>
<li class="sub7">sub7</li>
<li class="sub3">sub3</li>
<li class="sub5">sub5</li>
<li class="sub8">sub8</li>
<li class="sub1">sub1</li>
<li class="sub2">sub2</li>
<li class="sub6">sub6</li>
</ul>
the order is now 4,7,3,5,8. Those are the numbers that have been selected but how do I rearrange them into: 3,4,5,7,8,1,2,6? Could someone help me with this? Here is the JsFiddle http://jsfiddle.net/NTPd4/2/

You could do 2 things to make it ALL good. First, make an sort method to suit your needs (i went by alpha of inner html, pik your poison). Second, make a variable for a jQuery object you can simply add elements too.
Next, use the variable in your if statements to gather the elements you want. Then before inserting, sort them!
Example
function sortAlpha(a,b){
return a.innerHTML.toLowerCase() > b.innerHTML.toLowerCase() ? 1 : -1;
};
var activeSubjects = $();
if ($('li.cat1').hasClass('active')) {
activeSubjects = activeSubjects.add($('.sub5, .sub3, .sub8'))
}
if ($('li.cat2').hasClass('active')) {
activeSubjects = activeSubjects.add($('.sub3, .sub4, .sub7'))
}
activeSubjects.sort(sortAlpha).insertBefore($('.subjects li:first-child'));
I think the .add will sort them automigikally, but keep in mind, you could also use the sort function straightforward, like:
$('.sub5, .sub3, .sub8').sort(sortAlpha);
Also, for your current setup (where all text is same except for number) you could use a sort function like:
function sortNum(a,b) {
return parseInt($(a).text().substring(3)) - parseInt($(b).text().substring(3));
}
However, the sortAlpha will probably better suite your needs in the long run. As I mentioned before, you can arrange your sort function how you like.

If you want all five elements in their original order, you need to move them at the same time. Use .add() to combine them:
$('.sub3, .sub5, .sub8').add('.sub3, .sub4, .sub7').prependTo($('.subjects'));
Or, integrating it into your code:
var $selector = $();
if ($('li.cat1').hasClass('active')) {
$selector = $selector.add('.sub3, .sub5, .sub8');
}
if ($('li.cat2').hasClass('active')) {
$selector = $selector.add('.sub3, .sub4, .sub7');
}
$selector.prependTo('.subjects');
http://jsfiddle.net/mblase75/GYfpv/

What's the best way to "transfer" directives from and to, using AngularJs

I have a widget that has the following structure (it's a "plan selector" resume):
<div>
<ul>
<li resume="to" ng-repeat="item in items"></li>
</ul>
<div class="total"></div>
<ul>
<li resume="from" ng-repeat="item in items"></li>
</ul>
</div>
my directive is the following:
plans.directive('resume', function() {
return {
restrict: 'A',
template: '<h3>{{step.name}}</h3><div>{{val}}</div>',
link: function($scope, element, attrs, controller) {}
};
});
Notes:
plans is an angular.module('Plans')
items is some data that is loaded via AJAX, and each item has a selected attribute
they share the same controller as the items that will be selected, that is PlansCtrl
What I want:
When the user finishes selecting the items (setting each "selected"), it will only show in the "to" when it's selected, and it will only show in the "from" when it's not selected. I don't want to hard code anything because everything is mounted using AJAX.

Assuming I'm understanding you right, it's probably better to use the filter filter like so:
http://jsfiddle.net/qbGeG/
<div ng-app ng-controller="x">
<b>selected</b>
<ul>
<li ng-repeat="item in items | filter:{selected:true}" ng-click="item.selected = !item.selected">{{item.name}}</li>
</ul>
<div class="total"></div>
<b>unselected</b>
<ul>
<li ng-repeat="item in items | filter:{selected:!true}" ng-click="item.selected = !item.selected">{{item.name}}</li>
</ul>
</div>
If you need the functionality as a directive, then it would be better to replace the entire li element with something like: <selectableList source="items" /> where your directive just uses filter and ngClick like I did above.

Dynatree.js how to get node selected in html using dyna.js

Im working on html form and I have used dynatree for select and multi-select as per requirement of the project. What I need to do is to make a edit form where user gets all the fields filled from database. Which means i need to show a user a dynatree with already selected fields. Here is my example code :
<span id="action" name="action">
<ul>
<li id="DisruptiveAction" class="folder expanded">DisruptiveAction (5)
<ul>
<li id="allow" title="optional">allow
<li id="deny" title="optional">deny
<li id="pass" title="optional" class="selected" >pass
<li id="block" title="optional">block
<li id="redirect" title="optional">redirect
</ul>
</ul>
</span>
Java script :
$("#action").dynatree({
classNames: {
container: "action-container",
checkbox: "dynatree-radio"
},
selectMode: 3,
onSelect: function(select, node) {
var selKeys = $.map(node.tree.getSelectedNodes(), function(node){
return node.data.key;
});
$("#selectedAction").val(selKeys.join(","));
var selRootNodes = node.tree.getSelectedNodes(true);
var selRootKeys = $.map(selRootNodes, function(node){
return node.data.key;
});
}
});
In above mentioned html even though Im using class = "selected" with an li element but its still not showing it as selected on UI. Thanks in advance.

Dynatree creates its own elements when initializing, and throughout the lifetime of the tree. Therefore, the li elements that you are adding are not the li elements of the tree.
Take a look at this documentation, under the section "Node Options". You'll see that you can add a class like so:
<div id="tree">
<ul>
<li id="DisruptiveAction" class="folder expanded">DisruptiveAction (5)
<ul>
<li id="allow" title="optional">allow
<li id="deny" title="optional">deny
<li id="pass" title="optional" data="addClass: 'dynatree-selected'" >pass
<li id="block" title="optional">block
<li id="redirect" title="optional">redirect
</ul>
That is generic code for adding a class. There might a more specific way of specifying that an element is selected, as it is a core dynatree concept, rather than a user-defined class.