Get Data from HTML Table with Jquery (Or other ways if possible) - javascript

I have a really big HTML Table with data formatted like this (a simplified version of my table):
https://pastebin.com/K5UB4cGB
The list is much bigger.
I need to know which Application runs on which Server(multiple).
I now need to somehow get all the data and store it (maybe in an array) so I can work with it.
(For example I need to compare certain applications and write a code to document it.)
I've already tried many methods I found on the web but I not sure im working in the right way.
My recent atempt is:
var data = Array();
$("table").each(function(i, v) {
data[i] = Array();
$(this).each(function(ii, vv) {
data[i][ii] = $(this).text();
});
})
document.write(data);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="table">
<tr>
<th>1</th>
<th>2</th>
<th>3</th>
</tr>
<tr>
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>
<div id="result" style="color: #f00"></div>
Outputs:
1 2 3 4 6 7 8 9 10
With this method I get one array:
1,2,3,4,5,6,7,8,9,10
But I cannot access the stored vaules because for example data[0] outputs all the values and not only one.
Sorry for the long text
Thanks for your help :)
Kind Regards,
Markus


You can try using nested for loops and get a nested array of data.
let data = [];
$("table tr").each(function() {
let row = [];
$(this).children("td").each(function() {
row.push($(this).text());
})
data.push(row);
})
console.log(data);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="table">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>


You need to iterate rows and within rows iterate cells
You can do this all with map()
var data = $('tr').map(function() {
return [$(this).children().map(function() {
return $(this).text().trim()
}).get()];
}).get();
console.log(JSON.stringify(data));
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="table">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>
<div id="result" style="color: #f00"></div>


use each to loop through td and get its text value
var val=[]
$('#table td').each(function(e){
val.push($(this).text())
})
console.log(val)
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<table id="table">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>


In the following I am using an each function to derive the data of the table and then pushing into an array list. I hope this code is helpful. This code is really small.
var arr = [];
$("th, td").each(function(){
arr.push($(this).text());
$("#result").text(arr);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="table">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>6</td>
<td>7</td>
</tr>
<tr>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>
<div id="result" style="color: #f00"></div>

Related

Update a table cell with a randomly generated number

I am very new to javascript. I have only been working with it for a week. I have been trying to update the html table column with a 0 value to a random number generated by javascript. This is what I have tried so far, with the function "plays", but it produces no output. What errors do I have and what am I missing from my code? Any help would be greatly appreciated.
<table class="content-table">
<tbody id="groupH" onload="plays()">
<tr>
<td>4</td>
<td>Poland</td>
<td>3</td>
<td>1</td>
<td id='updateDraw'>0</td>
<td>2</td>
<td>2</td>
<td>5</td>
<td>-3</td>
<td>3</td>
</tr>
</tbody>
</table>
<!-- Update points table as page refreshes-->
<script>
function plays(){
document.getElementById("updateDraw").innerHTML = Math.floor(Math.random()* 10);
}
</script>

You can check it
<table class="content-table">
<tbody id="groupH">
<tr>
<td>4</td>
<td>Poland</td>
<td>3</td>
<td>1</td>
<td id='updateDraw'>0</td>
<td>2</td>
<td>2</td>
<td>5</td>
<td>-3</td>
<td>3</td>
</tr>
</tbody>
</table>
<!-- Update points table as page refreshes-->
<script>
function plays(){
document.getElementById("updateDraw").innerHTML =
Math.floor(Math.random() * 10);
}
window.onload = function () {
plays();
}
</script>

There is no onload on a tbody element. This is raised when the window loads:
function plays() {
document.getElementById("updateDraw").innerHTML = Math.floor(Math.random() * 10);
}
window.addEventListener("load", plays);
<table class="content-table">
<tbody id="groupH">
<tr>
<td>4</td>
<td>Poland</td>
<td>3</td>
<td>1</td>
<td id='updateDraw'>0</td>
<td>2</td>
<td>2</td>
<td>5</td>
<td>-3</td>
<td>3</td>
</tr>
</tbody>
</table>

Another way is to attach the onload call to the <body> tag:
<body onload="plays()">
<table class="content-table">
<tbody id="groupH">
<tr>
<td>4</td>
<td>Poland</td>
<td>3</td>
<td>1</td>
<td id='updateDraw'>0</td>
<td>2</td>
<td>2</td>
<td>5</td>
<td>-3</td>
<td>3</td>
</tr>
</tbody>
</table>
<!-- Update points table as page refreshes-->
<script>
function plays() {
document.getElementById("updateDraw").innerHTML = Math.floor(Math.random() * 10);
}
</script>
</body>

How can I reference a table cell by its position?

I have a row in a table with the head of the row and 96 cells.
Each row is clickable by the following function
$("#table tr").click(function(){});
Now by getting value from 0 to 96, I need to get the td in the place X and do a colspan on it.
As in the form, I get value 40 I need to make the colspan on the 40th td in the clicked row.
How can I implement something like that in JavaScript or jQuery?
Thank's to Pete comment I've got how to get td to which change the attribute, the problem now is if I colspan the cell the table become deformed as on the screen

You can try something like this. You need to add colspan attribute first and then need to remove last cells as below:
$(document).ready(function(){
$("#tables tr").click(function() {
let position = 2;
let colspan = 2;
$(`td:eq(${position-1})`, this).prop('colspan', colspan);
$(`td:eq(${position+colspan})`, this).nextAll().remove();
});
});
Hope it helps you ;)

You could use the jQuery selector :eq() to get the position you want with the prop() method that will set the colspan attribute, like :
$("#table tr").click(function() {
let position = 5;
let colspan = 2;
$(`td:eq(${position-1})`, this).prop('colspan', colspan);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="table" border="1">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>

Select Html row and get selected data

I am trying to click on a html row and get all the elements but i can't figure it out,below are my HTML Land java script codes, Help!
<table id="example"width="100%" border="1" cellpadding="0" cellspacing="0">
<tr id="1"onmouseover="ChangeColor(this, true);" onmouseout="ChangeColor(this, false);" onclick="readvalues();">
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr id="2"onmouseover="ChangeColor(this, true);" onmouseout="ChangeColor(this, false);" onclick="readvalues();">
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr id="3"onmouseover="ChangeColor(this, true);" onmouseout="ChangeColor(this, false);" onclick="readvalues();">
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>
And my javascript codes
<script type="text/javascript">
function ChangeColor(tableRow, highLight) {
if (highLight) {
tableRow.style.backgroundColor = '#dcfac9';
} else {
tableRow.style.backgroundColor = 'white';
}
}
</script>

You can select all td of selected row and get the innerHTML of each td.
function ChangeColor(tableRow, highLight)
{
if (highLight)
{
tableRow.style.backgroundColor = '#dcfac9';
}
else
{
tableRow.style.backgroundColor = 'white';
}
}
function readvalues(tableRow){
var columns=tableRow.querySelectorAll("td");
for(var i=0;i<columns.length;i++)
console.log('Column '+i+': '+columns[i].innerHTML );
}
<table id="example"width="100%" border="1" cellpadding="0" cellspacing="0">
<tr id="1"onmouseover="ChangeColor(this, true);"
onmouseout="ChangeColor(this, false);"
onclick="readvalues(this);">
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr id="2"onmouseover="ChangeColor(this, true);"
onmouseout="ChangeColor(this, false);"
onclick="readvalues(this);">
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr id="3"onmouseover="ChangeColor(this, true);"
onmouseout="ChangeColor(this, false);"
onclick="readvalues(this);">
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>

You can do the same thing with pure CSS.
Below is an example, where I have used hover class for true
tr{
background: grey;
}
tr:hover{
background: white;
}
.hover:hover{
background:#dcfac9;
}
<table id="example"width="100%" border="1" cellpadding="0" cellspacing="0">
<tr id="1" class="hover"
onclick="readvalues();">
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr id="2"
onclick="readvalues();">
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr id="3" class="hover"
onclick="readvalues();">
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>

If you are using jQuery, you can try something like this. Even more, you can use css instead of changing row colour in javascript.
$('#example tr').click(function() {
var values = $(this).find('td').map(function() {
return $(this).text();
}).get();
console.log(values);
});
table tr:hover {
background-color: #dcfac9;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="example" width="100%" border="1" cellpadding="0" cellspacing="0">
<tr id="1">
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr id="2">
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr id="3">
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>

In case if you want to read current 'tr' or row element's data on click, you can try this using pure javascript:
<table id="example"width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</table>
<script language="javascript">
function readValues(evt){
var elem = evt.target.parentElement;
console.log(elem); //elem contains current tr element's data
}
var elem = document.querySelectorAll("#example tr");
for(var i=0;i<elem.length;i++){
bindMe(elem[i]);
}
function bindMe(elem){
elem.addEventListener("click", function(evt){
readValues(evt);
});
}
</script>
jsfiddle: https://jsfiddle.net/rxvjmvzh/

How to get all tr and td in a table that rows filtered by a attribute in jQuery

I have a table that include rows that any row has a attribute which called entity-state. I have get all td from rows that entity-state !== 'deleted'.
<table>
<tr entity-state="deleted">
<td>1</td>
<td>2</td>
</tr>
<tr entity-state="added">
<td>3</td>
<td>4</td>
</tr>
<tr entity-state="added">
<td>5</td>
<td>6</td>
</tr>
</table>
I want get all td values that are in rows that entity-state is added only.

You can use the attribute selector for this:
$('tr[entity-state="added"]');
// or
// $('tr:not([entity-state="deleted"])');
You should note that entity-state is a non-standard attribute and will mean your HTML is invalid. To solve this you should use a data-* attribute instead:
<tr data-entity-state="deleted">
<td>1</td>
<td>2</td>
</tr>
<tr data-entity-state="added">
<td>3</td>
<td>4</td>
</tr>
$('tr[data-entity-state="added"]');
It's also possible to achieve what you need using filter(), which is useful when using data-* attributes as changing their values through jQuery does not update the DOM.
var $enabledRows = $('tr').filter(function() {
return $(this).data('entity-state') == 'added';
// or:
// return $(this).data('entity-state') !== 'deleted';
});

You can use combination of attribute equals selector and :not() (or not()) selector
$('tr:not([entity-state="deleted"])')
or
$('tr').not('[entity-state="deleted"]')
$('tr:not([entity-state="deleted"])')
// or $('tr').not('[entity-state="deleted"]')
.css('color', 'red')
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr entity-state="deleted">
<td>1</td>
<td>2</td>
</tr>
<tr entity-state="added">
<td>3</td>
<td>4</td>
</tr>
<tr entity-state="added">
<td>5</td>
<td>6</td>
</tr>
</table>

You can use not selector with attribute selector,
$("tr:not([entity-state='deleted']) td").each(function() {
console.log($(this).text())
});

$('table tr[entity-state=added]').each(function(i,v){
var $td = $(this).find('td')
console.log($td.text())
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr entity-state="deleted">
<td>1</td>
<td>2</td>
</tr>
<tr entity-state="added">
<td>3</td>
<td>4</td>
</tr>
<tr entity-state="added">
<td>5</td>
<td>6</td>
</tr>
</table>
Use the attr selector for this

Filtering: How to hide/show (toggle) certain table rows on click?

Assuming this table (actually it could have more columns and rows):
<table id="vehicles">
<tr>
<th>Type</th>
<th>Color</th>
<th>Wheels</th>
</tr>
<tr>
<td>Car</td>
<td>Red</td>
<td>4</td>
</tr>
<tr>
<td>Motorcycle</td>
<td>Green</td>
<td>2</td>
</tr>
<tr>
<td>Bike</td>
<td>Blue</td>
<td>2</td>
</tr>
<tr>
<td>Car</td>
<td>Blue</td>
<td>4</td>
</tr>
<tr>
<td>Bike</td>
<td>Green</td>
<td>2</td>
</tr>
<tr>
<td>Motorcycle</td>
<td>Red</td>
<td>2</td>
</tr>
</table>
Now my goal is to be able to click on the table data (cells), for example "Car", and then show only the two cars. Another click on "Car" should show the hole table again. Or one click on "Red", and then only the red vehicles (red car and red motorcycle) should be shown. How can this be achieved using jQuery?

$(function () {
$( "td" ).on( "click", function() {
var type = $(this).text();
$('td:first-child').parent('tr:not(:contains('+type+'))').toggle();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="vehicles">
<tr>
<th>Type</th>
<th>Color</th>
<th>Wheels</th>
</tr>
<tr>
<td>Car</td>
<td>Red</td>
<td>4</td>
</tr>
<tr>
<td>Motorcycle</td>
<td>Green</td>
<td>2</td>
</tr>
<tr>
<td>Bike</td>
<td>Blue</td>
<td>2</td>
</tr>
<tr>
<td>Car</td>
<td>Blue</td>
<td>4</td>
</tr>
<tr>
<td>Bike</td>
<td>Green</td>
<td>2</td>
</tr>
<tr>
<td>Motorcycle</td>
<td>Red</td>
<td>2</td>
</tr>
</table>
Stores the text from current td, hides tr nodes which do not contain the text.

Here's a really really simple test that might help you get started.
$(function () {
$("#vehicles tr td").click(function () {
var desc = $(this).html();
$("#vehicles tr").css("background-color", "white");
$("#vehicles").find(":contains(" + desc + ")").closest("tr").css("background-color", "red");
});
});
This assigns a click event to every TD element, stores its value somewhere and then checks if said value exists in the table, highlighting the elements that are matched. Give it a spin, I think it'll set you off in the right direction.

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