Develop Reference

Is there way to parse tr returned by 'this'?

Each row of my table has a button at the end of the row, which has an addEventListener like this,
button.addEventListener ("click", function() {
deleteSummary(this);
});
function deleteSummary(oButton)
{
console.log(oButton.parentNode.parentNode.innerHTML)
}
the console.log shows like this,
<td>966</td><td>TypeA</td><td>1234</td><td>10,000</td><td>9,861</td><td>139</td><td>2021-01-02</td><td>3</td><td>7</td><td>8</td><td>7</td><td>89</td><td>9</td><td>8</td><td>7</td><td>1</td><td><button>delete</button></td>
But I have no idea how to parse(?) it.
I always found answers you use document.getElementById() when googling.
Thanks

You should not aim to parse HTML. You have access to the DOM, so stick with that. You already found the tr element successfully, and then you can for instance use its cells property to get access to all the td elements, and you could map that list of cells to their text content. That way you get a standard array with all the cell texts of that particular row.
let buttons = document.querySelectorAll("td>button");
for (let button of buttons) {
// Your code:
button.addEventListener ("click", function() {
deleteSummary(this);
});
}
function deleteSummary(oButton) {
let tr = oButton.parentNode.parentNode;
let data = Array.from(tr.cells, cell => cell.textContent);
data.pop(); // Optional: get rid of the column with the delete button
console.log(data);
}
<table>
<tr>
<td>966</td>
<td>TypeA</td>
<td>1234</td>
<td>10,000</td>
<td>2021-01-02</td>
<td><button>delete</button></td>
</tr>
<tr>
<td>123</td>
<td>TypeB</td>
<td>9988</td>
<td>29,999</td>
<td>2020-09-20</td>
<td><button>delete</button></td>
</tr>
</table>

JavaScript modify CSS for multiple divs

I have a function tied to an anchor and on click, it modifies the display of a div from display none to block.
In that div i have another anchor which i want to use to hide the parent div.
See mock-up below:
Click
This modifies the AllSources div display to block:
<div id="EssentialSourcesTab"></div>
<div id="AllSourcesTab">
<a href="#" class="inline_link AllSourcesLink" id="showBottom" onclick = "hideText(); return false;">
</div>
I managed to get the first function to work, that modifies the CSS for the AllSourcesTab to display block and hides the EssentialSourcesTab, however, I cannot get the other anchor(showBottom) to work. Basically, I want to use to hide the AllSourcesTab and display the EssentialSourcesTab
function showText() {
document.getElementById("AllSourcesTab").style.display = "block";
document.getElementById("EssentialSourcesTab").style.display = "none";
}
document.getElementById("BtNews").click = showText;
function hideText() {
document.getElementById("AllSourcesTab").style.display = "none";
document.getElementById("EssentialSourcesTab").style.display = "block";
}
document.getElementById("showBottom").click = hideText;

Same button for 2 tables selection jquery

i have a page and i got 2 tables in that page. I want to pass the value from rows to one .php page but with the same button. My code is this:
JS code:
var flag;
function highlight(e) {
if (selected[0]){
selected[0].className = '';
flag='1';
}
else if (selected2[0]){
selected2[0].className = '';
flag='0';
}
e.target.parentNode.className = 'selected';
alert(flag);
}
var table = document.getElementById('data-table'),
selected = table.getElementsByClassName('selected');
var table2 = document.getElementById('data-table-aux'),
selected2 = table2.getElementsByClassName('selected');
table.onclick = highlight;
table2.onclick=highlight;
$("#tst").click(function(){
if(flag=='1'){
var value =$(".selected td:first").html();
value = value || "Nenhuma coluna selecionada";
window.open("info_detalhada.php? data2="+value,'_blank','toolbar=0,location=no,menubar=0,height=550,width=650,lef t=200, top=300'); }
else if(flag=='0'){
var value =$(".selected td:first").html();
value = value || "Nenhuma coluna selecionada";
window.open("info_detalhada2.php? data2="+value,'_blank','toolbar=0,location=no,menubar=0,height=550,width=650,lef t=200, top=300');
}
});
HTML CODE
creating 2 tables
<table style="float: left" id="data-table"></table>
<table style="float: left" id="data-table-aux"></table>
(Dynamic tables )
button:
<input type="button" id="tst" value="Detailed information" />
The problem is that first time i select a row the variable flag will have the old value and not the new value from click.
For example, first time i click a row flag = undefined , second time got the value of the table selected (0 or 1) , if i click on other row the flag wont change and will got the old value (or 0 or 1).
Any tips ?
Thanks
edited: i didnt put the html in first place because i dont think it's an html solution, I dont have a fiddle created because i'm using dynamic table's but i will try to make a fiddle with my example and i will put here when it's done ;)
Fiddle : https://jsfiddle.net/gwg639Lf/9/

Let me suggest a more generic approach
First of all wrap your tables in a div
<div class="data-tables">
<table style="float: left" id="data-table"></table>
<table style="float: left" id="data-table-aux"></table>
</div>
Then delegate the click event handlers
$('.data-tables').delegate('table', 'click', function(event) {
$this = $(this)
$this.addClass('active').removeClass('inactive')
$this.siblings().addClass('inactive').removeClass('active')
});
This function does the following:
Add class active and remove inactive (if exists) to the selected item/table
Remove the class active and add class inactive from all adjacent tables
In this way you will only have one active table at the time
Then declare your button handler
$("#tst").click(function(){
var value = $('.active').html()
// Use the value as you want
})
This code will work no matter how many tables you add to the div

You're setting the class name of the element after the condition statement. Hence, the first time, your flag variable is undefined.
Try putting it in the beginning of the highlight function.
function highlight(e) {
e.target.parentNode.className = 'selected';
if (selected[0]){
selected[0].className = '';
flag='1';
}
else if (selected2[0]){
selected2[0].className = '';
flag='0';
}
alert(flag);
}
JsFiddle: https://jsfiddle.net/gwg639Lf/10/
Edit:
Add it before and after the condition. Adding it before the condition gives you the class name to initialize the flag variable. Adding it after gives the formatting bar.
JsFiddle: https://jsfiddle.net/gwg639Lf/13/

Ok, after some tests on Kostas Pelelis functions, i found a solution that is valid for my problem.
here is the code of JS:
var flag;
$("#data-table tr").click(function(){
$("#data-table-aux tr").addClass('selected').siblings().removeClass('selected');
$(this).addClass('selected').siblings().removeClass('selected');
flag='1';
});
$("#data-table-aux tr").click(function(){
$("#data-table tr").addClass('selected').siblings().removeClass('selected');
$(this).addClass('selected').siblings().removeClass('selected');
flag='0';
});
$('#tst').on('click', function(e){
if (flag=='1')
alert($("#data-table tr.selected td:first").html());
else if (flag=='0')
alert($("#data-table-aux tr.selected td:first").html());
});
Here is the fiddle --> fiddle
Thank you all for the help ;)

Change colour of td in dynamic table generated in php

I'm creating a PHP script that will dynamically generate tr and td elements for a table. When the user clicks in a specific cell in the first column, an AJAX function executes to display additional content. This is working as it should, however, I'm having trouble with what should be simple styling. When the user clicks on a given cell, I want that row to change colour (works) until they click on another cell (doesn't work).
Since my PHP file is rather large, I'm only posting the relevant parts.
<?php
$myFiles = showMyAttrs();
foreach($myFiles as $myFile) {
echo("<tr class = 'gradeC' onClick = 'changeColour(this)' onchange = 'restoreColour(this)' >");
echo("<td onClick = 'sendCell(this)' ><img src = $msEx /></td>");
echo("<td>$myFile</td>");
echo("</tr>");
}
I've also tried using onblur instead of onchange but that gave the same result.
The Javascript functions:
function changeColour(z) {
z.style.backgroundColor = "#FFFFFF";
}
function restoreColour(y) {
y.style.backgroundColor = "#00FF00";
}
Before I also tried:
function changeColour(z) {
document.getElementsByTagName("tr").style.backgroundColor = "#00FF00";
z.style.backgroundColor = "#FFFFFF";
<!-- document.getElementsByTagName("td").style.backgroundColor = "#00FF00"; -->
}
function changeColour(z) {
z.style.backgroundColor = "#FFFFFF";
document.getElementsByTagName("tr").style.backgroundColor = "#00FF00";
}
$('tr').click(function() {
$('tr').css('backgroundColor', '#0F0');
$(this).css('backgroundColor', '#FFF');
});
With each of them (except the last), the colour does change to white, however, when the user clicks on any other row, the previous row doesn't return to green. I don't mind if this works with Javascript or JQuery, as long as it is compatible across browsers. Even a fancy CSS trick I'm fine with using.

You're on the right track. I think adding/removing a class would be a good way to go. You could try this:
jQuery
$('tr').on('click', function() {
$('tr').children('td').removeClass('active');
$(this).children('td').addClass('active');
});
CSS
.active { background-color: yellow; }
See jsFiddle

Try using a css class to assign the background color:
$('.gradeC td').on('click',function(e){
if(!$(this).closest('tr').hasClass('green')){
$(this).closest('tr').addClass('green');
}else{
$(this).closest('tr').removeClass('green');
}
});
See demo here

Javascript/Jquery: Cannot target Sibling Node in Table

I have a function that hides/shows a table by clicking on it's header which is contained in a <thead> tag. When clicked the table hides and all that is left is the header, which, by clicking again, can un-hide the table.
I have multiple tables and would like to only have to use on function, instead of writing one for each table. To do this I am trying to pass the arguments (this,this.lastSibling). For some reason this.lastSibling is not targeting any object. I've tried every way of navigating the node tree I can think of, but I cannot target the tbody.
My Javascript/Jquery
function ToggleTable(trigger,target){
$(trigger).click(function(){
$(target).toggle();
ToggleTable(trigger,target)
});
}
My HTML
<table class="format2" >
<thead onmouseover="ToggleTable(this,this.lastSibling)">
<!--Title-->
</thead>
<tbody>
<!--Cells with information in here-->
</tbody>
<!--Note No TFooter Tag-->
</table>
<--Other tables similar to the one above-->
Thanks in advance!

I have a function that hides/shows a table by clicking on it's header which is contained in a <thead> tag. When clicked the table hides and all that is left is the header, which, by clicking again, can un-hide the table.
I'm lost in your current code. But If you want to toggle the visibility of the tbody (or the last child element in your <table> tag you could try this.
function ready() {
$('table > thead')
.each(function(e){
$(this).siblings(':last').hide();
})
.click(function(e) {
$(this).siblings(':last').toggle();
});
}
$(ready);
Live sample: http://bl.ocks.org/3078240

If you would like to try a solution that utilizes core JavaScript instead of jQuery shims, this might work for you. It's a function I quickly wrote that returns the last sibling that is an HTML element (e.g. not a text node) although you should be able to easily modify it to accept any node in the DOM:
function getLastSibling(el) {
var siblings, x, sib;
siblings = el.parentNode.children;
x = siblings.length;
while ((sib = siblings[x - 1]) && x >= 0) {
console.log(sib);
console.log(sib.nodeType);
if (sib.nodeType != 1 || sib.tagName == 'SCRIPT') {
x--;
} else {
return sib;
}
}
return null;
}

Assuming all your tables will have the class format2 .
Try this:
$("table.format2 > thead").click(function(){
$(this).next("tbody").toggle();
});
JSFiddle: http://jsfiddle.net/KcY4X/