I've got a todo list. Each row has a star icon that you can click, exactly like gmail. The difference here is that if you click a star it should sort to the top (higher priority), but also re-sort within the starred group by ascending alpha. Unstarred items sort below, also sorted by ascending alpha. Everything is working as expected except for the alpha sorting. Below is the sort function where I'm doing that. I've verified that everything works below except the //sort the arrays by alpha bit...
Sort fail:
function sortTasks(currList) {
var starredTasks = [];
var unstarredTasks = [];
//create arrays
$('li.task').each(function(){
if ($(this).children('img.star').attr('src') == "images/star_checked.gif") {
starredTasks.push($(this));
} else {
unstarredTasks.push($(this));
}
});
//sort the arrays by alpha
starredTasks.sort( function(a,b){ ($(a).children('p.task-name').text().toUpperCase() > $(b).children('p.task-name').text().toUpperCase()) ? 1 : -1;});
unstarredTasks.sort( function(a,b){ ($(a).children('p.task-name').text().toUpperCase() > $(b).children('p.task-name').text().toUpperCase()) ? 1 : -1;});
//draw rows starred first, unstarred second
$(currList).empty();
for (i=0; i < starredTasks.length; i++) {
$(currList).append(starredTasks[i]);
}
for (i=0; i < unstarredTasks.length; i++) {
$(currList).append(unstarredTasks[i]);
}
}
This array has been populated with the task rows in the order they were originally drawn. The data renders fine, but basically stays in the same order.
Example task row:
<div id="task-container" class="container">
<form name="enter-task" method="post" action="">
<input id="new-task" name="new-task" type="text" autofocus>
</form>
<h2 id="today">today</h2>
<ul id="today-list">
<li id="457" class="task">
<img class="star" src="images/star_checked.gif">
<p class="task-name" contenteditable>buy milk</p>
<p class="task-date"> - Wednesday</p>
</li>
</ul>
<h2 id="tomorrow">tomorrow</h2>
<ul id="tomorrow-list">
</ul>
<h2 id="future">future</h2>
<ul id="future-list">
</ul>
<h2 id="whenever">whenever</h2>
<ul id="whenever-list">
</ul>
</div>
Each item in the starredTasks array is an entire task row. I'm assuming that $(a) is the same level as $(li)?
and here's the function that triggers the sort:
$('body').on('click', 'img.star', function(){
var thisList = '#' + $(this).parent('li').parent('ul').attr('id');
if ($(this).attr('src') == 'images/star_checked.gif') {
$(this).attr('src', 'images/star_unchecked.gif');
} else {
$(this).attr('src', 'images/star_checked.gif');
}
sortTasks(thisList);
});
Also, I doubt it's worth mentioning, but the data is stored in mySQL and prepopulated via php.
I wasn't sure of a way to use .sort() directly on the $('li') without splitting it into separate arrays...
Anybody see my goof?
I don't see where you're adding the sorted list back into the DOM. If you're not, then that's the problem. Sorting an array of elements doesn't update the DOM at all.
Furthermore, your sorting is very expensive. It's better to map an array of objects that have the elements paired with the actual values to sort.
Finally, you appear to be using the same ID multiple times on a page. That's just wrong. it may work with jQuery's .children(selector) filter, but it's still wrong. You need to change that.
Here I map an array of objects that contain a text property holding the text to sort and a task property that holds the element.
I changed p#task-name to p.task-name, so you should change that to class="task-name" on the elements.
Then I do the sort using .localeCompare(), which returns a numeric value.
Finally, the .forEach() loop appends the elements to the DOM.
var data = starredTasks.map(function(t) {
return { task: t,
text: $(t).children('p.task-name').text().toUpperCase()
};
}).sort(function(obj_a, obj_b) {
obj_a.text.localeCompare(obj_b.text);
}).forEach(function(obj) {
original_container.append(obj.task);
});
This assumes starredTasks is an actual Array. If it's a jQuery object, then do starredTasks.toArray().map(func....
The original_container represents a jQuery object that is the direct parent of the task elements.
Related
I coded like this to remove duplicate values.
vue
<div class="col-md-6" style="float: left">
<ul class="list-group">
<li class="list-group-item"
:class="{ active: index1 == currentIndex1 }"
v-for="(member, index1) in uniqueMemName"
v-bind:value="member.mem_name"
:key="index1"
#click="setActiveMember(member, index1)"
>
<strong style="margin-bottom: 5px"> {{member.mem_name}} </strong>
</li>
</ul>
</div>
vue (script)
computed: {
uniqueMemName() {
return _.uniqBy(this.members, function(m) {
return m.mem_name;
});
}
},
I also installed lodash. But I get an error. Which part is wrong?
Please let me know if there is another method other than the one I wrote.
++) error console
console window
++) array information:
I have tables A and B. Table A imports only the mem_name column. Table B imports all columns.
Example ->
a.mem_name
b.col1
b.col2
mem1
10
20
mem1
30
40
mem2
50
60
I'm working on making duplicate mem_names into one at this time. Using lodash's unique features.
If you want to use lodash just for this, which sounds like the case, I suggest that there may be a better way without it, only using newer vanilla JS:
...
computed: {
uniqueMemName() {
return [...new Set(this.members.map(m => m.mem_name))]
}
}
Sets are always unique, so mapping and converting to a set and then back to array gives us a unique array.
This code doesn't work
var next = $("#orders").find(".next");
if (next.length == 1) {
var address = $(next[0]).find(".directionsAddress");
var destination = $(address[0]).text();
}
<div id="orders" class="ui-sortable">
<div id="companyAddress" class="noDisplay">101 Billerica Avenue, North Billerica, MA</div>
<div id="companyPhone" class="noDisplay">9788353181</div><div class="next"></div>
<div class="lat">42.616007</div>
<div class="lng">-71.31187</div>
<div id="section1611" class="sectionMargin borderRad">
<div class="directionsAddress noDisplay">92+Swan+Street+Lowell+MA</div>
It is suppose to find one div with a class of "next" that I know exists on the page, then within that one item of the result set array, there will be one div with a class name of directionsAddress.
The "next" array is coming back with a length of 1, so it looks like the problem is with my $(next[0]).find because the address array is coming back as 0 length and I am making a syntax error of some sort that I don't understand.
This should do what you want. You need to find the parent (or alternatively, the sibling of .next) then try to find the applicable .directionsAddress.
var next = $("#orders").find(".next");
if (next.length == 1) {
var destination = $(next).parent().find(".directionsAddress");
alert($(destination).text());
}
Working fiddle: https://jsfiddle.net/00fgpv6L/
I'm building an app using AngularJS and LocalStorage. I've run into a problem that it's a tad too complex for me.
I have a list of people, and the idea is to be able to add arrays of names. I choose X names, click add, creates an object in an array, it resets the list, and I can start over, choose X names, click add, etc.
Here's how I create the temporary array that then I push into LocalStorage:
HTML:
<form>
<div class="col-md-3" ng-repeat="staff in stafflist | orderBy: 'name'">
<button class="btn form-control" ng-show="!staff.chosen" ng-click="pushStaff(staff)">{{staff.name}}</button>
<button class="btn btn-primary form-control" ng-show="staff.chosen" ng-click="unpushStaff(staff)">{{staff.name}}</button>
</div>
<button class="btn ng-click="addRecord()">Add passangers</button>
</form>
JS:
$scope.paxlist = [];
$scope.pushStaff = function (staff) {
staff.chosen = true;
$scope.paxlist.push(staff);
console.log($scope.paxlist);
};
$scope.unpushStaff = function (staff) {
staff.chosen = false;
var index=$scope.paxlist.indexOf(staff)
$scope.paxlist.splice(index,1);
console.log($scope.paxlist);
}
My problem is that I can create objects into the array, but when I add an object, the selected items of the list of names won't reset, so they will be pre-selected when adding the next object.
At the same time, it will also stay linked to the last object added, so when I modify the selection, the last object will also get modified.
This also messes with the possibility of adding an editing capability for each object of the array.
I've created a Plnkr that illustrates the issue.
If you could shed some light on the issue, that would be brilliant.
In addRecord you need reset property chosen
$scope.addRecord = function () {
$scope.recordlist.push({ pax: angular.copy($scope.paxlist) });
jsonToRecordLocalStorage($scope.recordlist);
$scope.editItem = false;
$scope.paxlist = [];
$scope.stafflist.forEach(function (el) {
el.chosen = false;
});
};
Demo: http://plnkr.co/edit/vV8OuKiTKYkFyy7SrjOS?p=preview
I have a page with a very large table (several thousand rows).
The table shows a subset of data specified by certain filters. I need the table to update whenever one of the filters changes.
Basically, there are a few check boxes and a text box, whenever one of these changes I reload the table to display only those rows which fit the criteria specified by the user.
I'm doing this by clearing the table and reloading the rows that match the filters. This works but has proven to be very slow.
Here is my javascript code:
function reloadTable() {
var tablebody = document.getElementById("tablebody");
while(tablebody.hasChildNodes()) tablebody.removeChild(tablebody.firstChild);
filter = new FilterChecker();
for (var i=0;i<rows.length;i++) {
if (filter.isVisible(rows[i]))
addRowToTable(rows[i]);
}
}
Is there a way to make it faster?
Alright, sorry for the delay, but I got wrapped up in work. I came up with a nice set of logic that illustrates what you need.
FIDDLE
I created some simple html to illustrate the point. It contains two drop downs to mimic the filters and 8 data rows to mimic your data grid.
<div id="body">
<select id="filterA" class="filter" name="states">
<option value="filterACT">Connecticut</option>
<option value = "filterAMA">Mass</option>
</select>
<select id="filterB" class="filter" name="towns">
<option value="filterBBT">Big Town</option>
<option value = "filterBST">Small Town</option>
</select>
<div id="grid">
<div class="row filterACT filterBBT">BigTown CT 1</div>
<div class="row filterACT filterBBT">BigTown CT 2</div>
<div class="row filterACT filterBST">SmallTown CT 1</div>
<div class="row filterACT filterBST">SmallTown CT 2</div>
<div class="row filterAMA filterBBT">BigTown MA 1</div>
<div class="row filterAMA filterBBT">BigTown MA 2</div>
<div class="row filterAMA filterBST">SmallTown MA 1</div>
<div class="row filterAMA filterBST">SmallTown MA 2</div>
</div>
</div>
</br>
<hr/>
<div>LOG</div>
<hr/>
<div id="log"></div>
The log div is simply to show an output, which I think would be helpful. Each row is identified by class 'row' followed by another series of classes. These classes help determine what their filter data is. You would need to set this programmatically when building the grid. Additionally, these class names must match the filter option values. You can see that the first row has classes from the first option in filterA and from the first option in filterB.
Now, the javascript is a bit verbose, but you can refactor to your hearts content. Sometimes I find it easier when things are explicit when you are trying to understand them. Also, admittedly, I would do this with jQuery, so my pure Javascript isn't as sharp.
var elements = document.getElementsByClassName('filter');
writeToLog("Filter elements found: " + elements.length);
for(var e = 0;e < elements.length;e++)
{
elements[e].onchange =function() {
writeToLog('Filter event fired for id:'+this.id);
filterChange();
};
}
First I get all the elements with the filter class, this would be your filters. I then iterate over them and set their onchange event to call the filterChange() method. The writeToLog() method calls are just for output purposes.
function filterChange() {
var filterClasses = [];
for(var i = 0;i<elements.length;i++) {
writeToLog('Pushing ('+elements[i].value+') into filter class variable.');
filterClasses.push(elements[i].value);
}
In the first part of the function I get all the select filter option values and put them into an array.
writeToLog('Filter classes: ' + filterClasses);
var rows = document.getElementsByClassName('row')
writeToLog('Row count: ' + rows.length);
I then get all of the rows, in my grid and start to iterate over them:
for(var j = 0;j<rows.length;j++)
{
writeToLog('Checking row: ' + rows[j].className);
var rowIsHidden = false;
Once I have a row, in the loop, I iterate the filter classes in the array and see if this row's classes have it. If not, I set rowIsHidden to true, otherwise it stays false.
for(var k = 0;k<filterClasses.length;k++)
{
writeToLog('Checking for class: ' + filterClasses[k]);
if(rows[j].className.indexOf(filterClasses[k]) < 0)
{
writeToLog('Class not found, hide this row.');
rowIsHidden = true;
break;
}
}
Before the loop moves to the next row, I set the display style based on the rowIsHidden value.
writeToLog('Row is hidden: ' + rowIsHidden);
rows[j].style.display = rowIsHidden ? 'none' : 'block';
}
}
By all means, this can be cleaned up and certainly optimized, but I think the intent and logic is fairly clear. Hope this helps and feel free to question any of it :)
I have a div, #containerDiv, which contains elements related to users like first name, last name etc. in separate divs. I need to sort the contents of the container div based on the last name, first name etc. values.
On searching google the examples I got all are appending the sorted results and not changing the entire HTML being displayed. They are also not sorting by specific fields (first name, last name).
So please help me in sorting the entire content of #containerDiv based on specific fields and also displaying it.
The Page looks Like something as mentioned Below:
<div id="containerDiv">
<div id="lName_1">dsaf</div><div id="fName_1">grad</div>
<div id="lName_2">sdaf</div><div id="fName_2">radg</div>
<div id="lName_3">asdf</div><div id="fName_3">drag</div>
<div id="lName_4">fasd</div><div id="fName_4">gard</div>
<div id="lName_5">dasf</div><div id="fName_5">grda</div>
<div id="lName_6">asfd</div><div id="fName_6">drga</div>
</div>
On getting sorted by last name div values, the resulted structure of the container div should look like:
<div id="containerDiv">
<div id="lName_3">asdf</div><div id="fName_3">drag</div>
<div id="lName_6">asfd</div><div id="fName_6">drga</div>
<div id="lName_5">dasf</div><div id="fName_5">grda</div>
<div id="lName_1">dsaf</div><div id="fName_1">grad</div>
<div id="lName_4">fasd</div><div id="fName_4">gard</div>
<div id="lName_2">sdaf</div><div id="fName_2">radg</div>
</div>
Now I think you all can help me in a better way.
this is a sample example:
html:
<div id="containerDiv">
<div>2</div>
<div>3</div>
<div>1</div>
</div>
js
$(function() {
var container, divs;
divs = $("#containerDiv>div").clone();
container = $("#containerDiv");
divs.sort(function(divX, divY) {
return divX.innerHTML > divY.innerHTML;
});
container.empty();
divs.appendTo(container);
});
you may set your divs.sort function param depend on your goal.
jsFiddle.
and a jQuery Plugin is suitable
I suggest you read the div values so you get an array of objects (persons for example) or just names and perform a sort operation on that. Than...output the result to the initial div (overwriting the default values).
I have built a jQuery sort function in which you can affect the sort field.
(it rebuilds the html by moving the row to another location).
function sortTableJquery()
{
var tbl =$("#tbl tr");
var store = [];
var sortElementIndex = parseFloat($.data(document.body, "sortElement"));
for (var i = 0, len = $(tbl).length; i < len; i++)
{
var rowDom = $(tbl).eq(i);
var rowData = $.trim($("td",$(rowDom)).eq(sortElementIndex).text());
store.push([rowData, rowDom]);
}
store.sort(function (x, y)
{
if (x[0].toLowerCase() == y[0].toLowerCase()) return 0;
if (x[0].toLowerCase() < y[0].toLowerCase()) return -1 * parseFloat($.data(document.body, "sortDir"));
else return 1 * parseFloat($.data(document.body, "sortDir"));
});
for (var i = 0, len = store.length; i < len; i++)
{
$("#tbl").append(store[i][1]);
}
store = null;
}
Every time I need to sort lists I use ListJs.
It's well documented, has good performance even for large lists and it's very lightweight (7KB, despite being library agnostic).