I have a collapsible table, where the rows can be expanded to show more information. I am trying to write a script that can dynamically add new rows to the table as the result of an API call. When I insert the rows directly inside the HTML script, there is no problem, however when i render these rows dynamically using JQuery JS, the table loses it's collapsibility and stays permanently extended. here is the JSFiddle that visualizes this problem: https://jsfiddle.net/cgsLueyr/16/
I believe that the problem lies with the following function, but I have no Idea how to remedy this.
(function ($) {
$(function () {
$('.table-expandable').each(function () {
var table = $(this);
table.children('thead').children('tr').append('<th></th>');
table.children('tbody').children('tr').filter(':odd').hide();
table.children('tbody').children('tr').filter(':even').click(function () {
var element = $(this);
element.next('tr').toggle('slow');
element.find(".table-expandable-arrow").toggleClass("up");
});
table.children('tbody').children('tr').filter(':even').each(function () {
var element = $(this);
element.append('<td><div class="table-expandable-arrow"></div></td>');
});
});
});
})(jQuery);
Notice how the table rows that render BEFORE the "startup()" function runs have collapsibility, while the table rows that are added as a result of "startup()" do not share the collapsibility.
I have a table that gets populated with data after a search. I would like to run a script to hide some of the columns after the table is loaded.
I know of ngAfterViewInit() but don't want to use that because the script needs to run after the search button has been clicked and data populated, not after the page load
I have the function where the code to hide columns after the data is supposed to be loaded but when I step through in the browser debugger, the function is getting hit before there's actual data displayed in the table which is why it's not working
//not working
this.customerService.getCustomers(query).toPromise().then(data => {
this.customers = data;
this.hideColumns();
});
hideColumns() {
$('.addressOld').hide()
}
Where can I call this function instead?
You can do what you need this way (and don't need to use jQuery to only hide/show elements, use Angular and pure html properties):
.html
<button (click)="doSearch()">search</button>
<div [hidden]="customers"></div>
.ts
class YourComponent {
customers = null;
doSearch() {
const query = 'something';
this.customerService.getCustomers(query).toPromise().then(data => {
this.customers = data;
});
}
}
Use the [hidden] property from html element to hide it, as explained here.
I have a working setup for data-tables and x-editable that allows a user to edit data inline in a table that gets loaded from the database. Once the page loads my code below fires and makes all the editable options editable, except it only seems to work for the first page of results. When you click next, change the number of results or do a search, any items that were not on the first page don't get made editable. I am assuming this is because data-tables hides the data that is not on the current page removing it from the document flow. How can I make sure all my data in the table is editable?
$(document).ready(function () {
$.fn.editable.defaults.mode = 'inline';
$('.LocatorID').editable();
$('.Title').editable();
$('.Latitude').editable();
$('.Longitude').editable();
$('.Website').editable();
$('.Address').editable();
$('.City').editable();
$('.State').editable();
$('.Zip').editable();
$('.Country').editable();
$('.Phone').editable();
});
First, move your x-editable setup into its own function:
function setupXedit() {
$.fn.editable.defaults.mode = 'inline';
$('.LocatorID').editable();
$('.Title').editable();
...
}
Then set so that you call the function on every draw:
$('#example').dataTable({
"fnDrawCallback": function( oSettings ) {
setupXedit();
}
});
Do like this: one $('.edit').editable(); inside Datatable fnDrawCallback and one outside .Datatable function
var table = $('#tbldivdsthietlap').DataTable({
"fnDrawCallback": function( oSettings ) {
$('.edit').editable();
}
});
$('.edit').editable();
So I have 2 html pages. 1 that functions as container and 1 that functions as content.
When I load the content page with a table I'm able to use drag and drop.
But when I go to my container page and load the content page into a div with ajax, the drag and drop stops working. All other javascript functionalities inside the content page still work. How can I bind the jquery dnd plugin to the table loaded with ajax?
I'm using drag & drop with this as tutorial http://isocra.com/2008/02/table-drag-and-drop-jquery-plugin/
my code looks like this:
$(window).load(function()
{ if(temp == 0)
{
DP("eerste keer")
load_table();
temp = 1;
}
} );
function load_table()
{
DP('load_table');
$.ajax({
//async: false,
type: "POST",
url: "/diagnose_hoofdpagina/table_diagnose/" + DosierID, // <== loads requested page
success: function (data) {
$("#diagnoses_zelf").html(''); //<== clears current content of div
$("#diagnoses_zelf").append(data).trigger('create'); // <== appends requested page
},
error: function(){
alert('error');
}
}).done(function() {
update_table();
initialize_table(); // <== calls jquery plug in
});
return false;
}
function initialize_table()
{
var tableid = $('#diagnoses_zelf table').attr('id'); //< this finds the correct table thanks to Fábio Batista => this option worked, rest didn't
alert(tableid);
$(tableid).tableDnD({
onDrop: function(table, row) {
alert(table + " " + row);
},
onDragStart: function(table,row){
var tette = $(row).index;
alert(tette);
},
dragHandle: ".dragHandle"
});
}
How is this possible and what can I do about it?
Can anyone help me with this please.
Very short:
I want access to the ID of the table I load into my container page with ajax and use the jquery drag and drop plug in on it.
EDIT
Findings:
Somehow my table in the container page got renamed to pSqlaTable instead of the id I gave to it in the controller page which is.
<table id="tableDiagnose" class="table table-hover">
Thats why the code couldn't find the table annymore Got fixed by this code thanks to Fábio Batista:
$('#diagnoses_zelf table').tableDnD( ... );
, but how can I use the dnd plugin now ?
It finds the table now, but I'm still not able to bind the dnd plugin to it, Am I able to bind a jquery plug in to ajax loaded tables ?
EDIT
//drag & drop http://isocra.com/2008/02/table-drag-and-drop-jquery-plugin/
function initialize_table()
{
var tableid = $('#diagnoses_zelf table').attr('id');
alert(tableid);
$('#' + tableid).tableDnD({
onDrop: function(table, row) {
alert(table + " " + row);
},
onDragStart: function(table,row){
alert('issemer?');
},
dragHandle: ".dragHandle"
});
}
This is the code i'm still stuck with. tableid is correct but the initialisation of the jquery isn't. I can't drag the drows in the table. Is my syntax wrong ?
EDIT
Could it be that I can't bind the jquery to the table because I dynamicaly generate the table on the other page with ZPT (or javascript) ?
The issue with plugins.
You're mixing lots of external libraries and code. This results in possible mis-matches between versions, and a lot of black boxes in your code.
As a developer, this should make you feel very uneasy. Having code you do not fully understand in your code base can get really frustrating really fast.
The alternative.
Often, these sort of plugins provide functionality we, as JavaScript developers can accomplish just as easily without them. This development process, in simple enough scenarios, lets us create code we understand and have an easier time maintaining. Not only do we learn from this process, but we also create smaller bits of specific code. Community driven solutions are very good in general, but it's important to remember they're not a silver bullet. Often you're stuck using a not-so-active project which has a bug for your specific case and you have to dig through a large, unfamiliar code base.
Your code
So what does this drag and drop plugin do?
Well, I'd break it down as the following:
Listens to the mousedown event on table rows
When such an event fires, start moving the table row to match the mouse position
When mouseup occurs, detect that, and finalize the position.
Let us see how we can do something similar.
Let's assume the table's HTML is something like:
<table>
<tbody>
<tr>
<td> Hello 1</td>
</tr><tr>
<td> Hello 2</td>
</tr>
</tbody>
</table>
Here is a fiddle with the table with some basic styling applied
Next, we'll listen to the selection events. We'll add an event to the table rows for selection and to the document to when the mouse is up. jQuery has event listeners for such events. Since we want these events to stick even after AJAX, we'll use .on which lets us use delegated events. .on means that even if we add content to the table later, it won't matter.
var selected; // currently selected row
$(document).on("mousedown","#MySpecialTable tr",function(){
$("#textDiv").text(this.textContent);
selected = this;
});
$(document).on("mouseup",function(){
$("#textDiv").text("Left "+selected.textContent);
selected = null;
});
Here is a working fiddle of such code.
Now, we'll want to actually change the drag&drop to work when, that is, update the current position to the one reflecting the mouse position. We can listen to mousemove events, and detect the element we're currently on. Something like
$(document).on("mousemove",function(e){
$("#textDiv").text($(e.target).html());
});
You can see a working fiddle here
That's nice, but we want to actually change the element position. So we'll need to change the table structure to allow that. We can remove the element, and append it at the correct position. We'll check if we have a selected element, and if we do, we can track it compared to the current element in the mousemove event. We can for starters detect if we should drag with something like:
$(document).on("mousemove",function(e){
if(selected !=null){// got an element selected
if($("#MySpecialTable").has(e.target).length > 0){ //in the table
$("#mousePos").text("DRAGGING");
}
}else{
$("#mousePos").text("NOT SELECTED");
}
});
(Fiddle)
Now, we'll add actual selection, we'll replace the elements when the target is not our element and we're in the table. Our full code should be something like:
var selected;
$(document).on("mousedown","#MySpecialTable tr",function(e){
e.preventDefault();//stop the text selection;
$("#textDiv").text(this.textContent);
selected = $(this);
selected.find("td").css("background-color","#999");
});
$(document).on("mouseup",function(){
$("#textDiv").text("Left "+selected.text());
selected.find("td").css("background-color","");
selected = null;
});
$(document).on("mousemove",function(e){
if(selected !=null){// got an element selected
if($("#MySpecialTable").has(e.target).length > 0){ //in the table
var el = $(e.target).closest("tr");//the tr element we're on
el.before(selected);// replace the elements
}
}else{
$("#mousePos").text("NOT SELECTED");
}
});
$("#MySpecialTable").on('selectstart', false);//Don't let the user select the table
(Fiddle)
Now, so far we only have a few lines of code, which is nice since we know exactly what's going on and didn't need to use lots of lines of external code we don't fully understand.
But will it AJAX?
Let's load the data into the table with AJAX and see! We'll simulate an AJAX response using a setTimeout which would allow us to simulate an asynchronous request. We'll use
setTimeout(function(){
$("#MySpecialTable").html("<tr><td> Hello 1</td></tr><tr><td> Hello 2</td></tr><tr><td> Hello 3</td></tr><tr><td> Hello 4</td></tr><tr><td> Hello 5</td></tr><tr><td> Hello 6</td></tr>");
},1000);
This means, update the HTML of #MySpecialTable after one second. Let's see if it works shall we?
So why does it work? well, we used delegated events which means we don't care if the elements we're loading are in the screen right now or not. We had the insight to do this since we built our code ourselves and knew what our final goal was. The only thing left to do is clean the code a little.
We'll wrap our code in the following, to prevent $ from being an issue in non-conflict mode (that is, $ is already taken in the page:
(function($){
})(jQuery);
Next we'll add a binding for our table event:
$.GertVDragTable = function(elementSelector){ // rest of code.
Eventually, our code might look something like this.
Using it, would be a simple $.GertVDragTable("#MySpecialTable"); alternatively, we can put it on $.fn and allow every function to call it. Which is a matter of taste.
No copy-pasta please :) I'd appreciate it if you stop on every stage and think why the next step was taken.
You don't need to use the ID as a selector, you can use any expression that can find your table.
If there's only one table on the resulting $.ajax call, you can search for "a table inside the container", using the container ID, which won't change:
$('#diagnoses_zelf table').tableDnD( ... );
If there's more than one table, use a different kind of selector, instead of the ID. A CSS class works fine:
$('table.table-diagnose').tableDnD( ... );
So does a data- attribute:
$("table[data-diagnose]").tableDnD( ... );
Try adding a title to your table, like so:
<table id = "tableDiagnose" class = "table table-hover" title = "table-content">
Then use the jQuery attribute selector to find this table instead of finding it by id.
$('table[title="table-content"]').tableDnD({
// the rest of your code
If your id is changing you should not use an ID then:
<table class="tableDiagnose table table-hover">
Plugin
function initialize_table()
{
$('.tableDiagnose.table').tableDnD({
onDrop: function(table, row) {
alert(table + " " + row);
},
dragHandle: ".dragHandle"
});
DP('nee');
}
EDIT: ajax is asynchronous :
function load_table()
{
DP('load_table');
$.ajax({
//async: false,
type: "POST",
url: "/diagnose_hoofdpagina/table_diagnose/" + DosierID, // <== loads requested page
success: function (data) {
$("#diagnoses_zelf").html(''); //<== clears current content of div
$("#diagnoses_zelf").append(data).trigger('create'); // <== appends requested page
update_table();
initialize_table(); // <== calls jquery plug in
},
error: function(){
alert('error');
}
});
//removed .done as you already have a success option in ajax
return false;
}
EDIT: found your bug........
you retrieve the table id then select it in $(tableid) but you missed the #
function initialize_table()
{
/*
var tableid = $('#diagnoses_zelf table').attr('id'); //< this finds the correct table thanks to Fábio Batista => this option worked, rest didn't
alert(tableid);
// but you really should limit the use of variables when you don't need them*/
//$('#'+tableid).tableDnD({
//like this directly
$('#diagnoses_zelf table').tableDnD({
onDrop: function(table, row) {
alert(table + " " + row);
},
onDragStart: function(table,row){
var tette = $(row).index;
//alert(tette);
},
dragHandle: ".dragHandle"
});
}
See the demo here
EDIT
Do you include the script file in the container page or in the content page? I guess you might want to try to load it when calling the dnd plugin with getScript:
...
$.getScript('pathTotableDnDlib').done(function(){
$(tableid).tableDnD({
onDrop: function(table, row) {
alert(table + " " + row);
},
onDragStart: function(table,row){
var tette = $(row).index;
alert(tette);
},
dragHandle: ".dragHandle"
});});
...
more on getscript: here
#BenjaminGruenbaum Hi thx a lot for the tutorial, i modified a bit the code to block the drag n'drop on table headers and to improve the drag fluidity tracking the mouse direction.
var old_y = 0;
(function ($) {
$.GertVDragTable = function (tableName) {
var selected;
$(document).on("mousedown", tableName+" tr",function (e) {
e.preventDefault(); //stop the text selection;
if (($(this).find('th').length)== 0){ //prevent dragging on tr containing th
selected = $(this);
selected.find("td").css("background-color", "black");
selected.find("td").css("color", "white");
}
});
$(document).on("mouseup", function () {
selected.find("td").css("background-color", "");
selected.find("td").css("color", "");
selected = null;
});
$(document).on("mousemove", function (e) {
if (selected != null ) { // got an element selected
if ($(tableName).has(e.target).length > 0) { //in the table
var el = $(e.target).closest("tr"); //the tr element we're on
if (el.find('th').length==0){ //prevent dropping on headers row
if (e.pageY > old_y){ //**
el.after(selected);}else{ //**-->more fluid dragging based on mouse direction
el.before(selected); //**
}
}
}
old_y = e.pageY;
}
});
$(tableName).on('selectstart', false); //Don't let the user select the table
}
})(jQuery);
here's the fiddle http://jsfiddle.net/59rdq/
I hope it will be useful for someone.
Im building a small application and I have some click events binded to some span tags that trigger AJAX requests to a PHP file which queries a MySQL database and spits out the results to populate the targeted area.
However, sometimes i will be clicking the buttons and I have conditionals in place to stop multiple clicking to prevent duplicate content being added numerous times.
I click on a button and firebug tells me that the ajax request had actioned more than once, sometimes it will multiply - so it will start by doing it 2 times or another time it will carry our the request 8 times on one click and obviously flood my content area with duplicate data.
Any ideas?
EDIT
Code for a button is as follows:
<span class="btn"><b>Material</b></span>
This would be enabled by
$('.btn').bind('click', matOption);
and this would be controlled by something like this
var matOption = function() {
$(this).addClass('active');
// remove colours if change of mind on materials
if($('#selectedColour').val() >= 1) {
$('.colour').slideUp(500).children().remove();
$('#selectedColour').val('');
$('.matColOpt .btn').html('<b>Material Colour</b>').removeClass('active').css('opacity', 0.55);
$('.btn').eq(2).unbind('click', colOption); // add click to colour
$('#stage h1 span').eq(2).fadeOut(500);
$('.paperOpt .btn').css('opacity', 0.55).unbind('click', selectPaper);
}
// ajax req for available materials
var cid = $('#selectedColour').val();
var target = $('#notebookOpts .matOpt ul');
$.ajax({
type: "GET",
url: ajaxFile+"?method=getMaterials",
beforeSend: function() {if($('.mats').children('li').size() >= 1) { return false; }},
success: function(data) {
target.append(data).slideDown(500);
$('.mats li').bind('click', matSelect);
},
error: function() {alert('An unexpected error has occurred! Please try again.');}
});
};
You're probably binding your matOption function more than once.
if(!window.matOptionBound){
$('.btn').bind('click', matOption);
window.matOptionBound = true;
}
If you have a code that binds an event handler to a DOM element repeatedly then that event handler does gets executed repeatedly on the event. so if your code such
$("span").click(myHandlerFunction)
gets executed thrice, then you have just told jQuery to fire myHandlerFunction thrice on every click of span. It would be good to make sure there is no such condition goign on in your code. If that is not true then please post your code so that I can help further.
PS: The safest way to do this will be as
$("span").unbind("click",myHandlerFunction).bind("click",myHandlerFunction)