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How to make expandable table cells hidden by default using jQuery/JavaScript, and click-able outside of a label?

I have this short piece of code that allows for sections of a table to be collapsed (they are like collapsible headers). This is neat, but I'm trying to make for the inverse to happen upon loading the page -- to be collapsed by default on load, but expandable when clicked. How would I go about doing this?
My present code, shown below, also features sections that only collapse when the words in the section are clicked, not when the section itself (outside of the words) are clicked. This is because I used labels to make the collapsible. Is there a way to make the entire row expandable/collapsible?
table {
width: 100%;
}
table,
tr,
th,
td {
border: 1px solid black;
border-collapse: collapse;
font-family: Arial;
}
[data-toggle="toggle"] {
display: none;
}
<table>
<thead>
<tr>
<th>Name</th>
<th>Number</th>
</tr>
</thead>
<tbody>
<tbody class="labels">
<tr>
<td colspan="2">
<label for="section">Click me!</label>
<input type="checkbox" id="section" data-toggle="toggle">
</td>
</tr>
</tbody>
<tbody class="hide">
<tr>
<td>Jack</td>
<td>100</td>
</tr>
<tr>
<td>Jill</td>
<td>300</td>
</tr>
</tbody>
</table>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(document).ready(function() {
$('[data-toggle="toggle"]').change(function() {
$(this).parents().next('.hide').toggle();
});
});
</script>

I'm trying to make for the inverse to happen upon loading the page --
to be collapsed by default on load, but expandable when clicked. How
would I go about doing this?
Simply add a line in your jquery above your toggle function and call on your .hide class selector and use .hide(); Then when you click it the toggle function fires.
also features sections that only collapse when the words in the
section are clicked, not when the section itself (outside of the
words) are clicked. This is because I used labels to make the
collapsible. Is there a way to make the entire row
expandable/collapsible?
Yes... Make your label display as block in your CSS file...
label {
display: block;
}
$(document).ready(function() {
$('.hide').hide();
$('[data-toggle="toggle"]').change(function() {
$(this).parents().next('.hide').toggle();
});
});
table {
width: 100%;
}
table,
tr,
th,
td {
border: 1px solid black;
border-collapse: collapse;
font-family: Arial;
}
[data-toggle="toggle"] {
display: none;
}
label {
display: block;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<thead>
<tr>
<th>Name</th>
<th>Number</th>
</tr>
</thead>
<tbody>
<tbody class="labels">
<tr>
<td colspan="2">
<label for="section">Click me!</label>
<input type="checkbox" id="section" data-toggle="toggle">
</td>
</tr>
</tbody>
<tbody class="hide">
<tr>
<td>Jack</td>
<td>100</td>
</tr>
<tr>
<td>Jill</td>
<td>300</td>
</tr>
</tbody>
</table>

Several things going on here...
You were hiding your checkbox, which I don't think was your intent.
Check this example, where I fixed some things: https://jsfiddle.net/za73qf65/
Fixes include:
changing the name of your "hide" class to "hidable"
defaulting that "hidable" class to be display:none
unhiding your checkbox
changing your change() event handler to a click() (optional)
attaching your event handler to a button with an ID (you can vary that)
Point is, with my changes, your example works. You might want to tweak it for a more specific need.

Is there a way to hide a data cell based on a specific value using just HTML/CSS?

For example I have this code:
<table>
<caption>Test</caption>
<tr>
<th>Values</th>
<td>$100</td>
</tr>
<tr>
<th>Initial value</th>
<td class="results"></td>
</tr>
</table>
Is there a way to hide the cells that are equal to $0 using HTML/CSS only?
Let's say instead of $0 I have a variable called fee that can be a variety of values: $0, $20, $100, etc.
For example:
<script>
var fees = ["$0", "$20", "$100"];
document.querySelector('.results').innerHTML = fees[1];
</script>
Is there a way to check what value it is and if it is found to be $0 can I then hide it?
My CSS is:
table{
border-width: 1px;
border-style: solid;
border-collapse: separate;
width: 400px;
}
#test{
empty-cells: show;
margin-bottom: 20px;
}
tr, th, td{
border-width:1px;
border-style: solid;
}
.results {
display: none; // I want this to only display none when fees = $0
}

TL;DR: It's possible. Look for the last solution in my answer, or check this blog:
Conditional formatting with pure css
I am assuming you do not want to hide the cell, but only its value. Hiding a cell does not make sense in a table since it would potentially change the layout, also any cell borders etc would also be hidden - probably not what you want.
Now CSS does not have any selectors based on element text content. But it does support attribute value selectors. So, you could change your code to be:
<table>
<caption>Test</caption>
<tr>
<th>Values</th>
<td><input value="$100"/></td>
</tr>
<tr>
<th>Initial value</th>
<td><input value="$0"/></td>
</tr>
</table>
And use a rule like
input[value="$0"] {
display: none;
}
You could even make the inputs not behave like inputs by adding a disabled attribute so they aren't editable.
If you don't want to use input elements, you could consider using spans instead and use a "data-value" attribute, and try if browsers respect that:
<table>
<caption>Test</caption>
<tr>
<th>Values</th>
<td><span data-value="$100">$100</span></td>
</tr>
<tr>
<th>Initial value</th>
<td ><span data-value="$0">$0</span></td>
</tr>
</table>
The css woudl be:
td > span[data-value="$0"] {
display: none;
}
Of course the drawback of this is that you would have to add the value twice (once as text content, once as attribute), and you need to generate an inner span element which feels a bit ugly.
Alternatively you could try to add a class attribute that includes the value and create a class selector:
<table>
<caption>Test</caption>
<tr>
<th>Values</th>
<td ><span class="value100">$100</span></td>
</tr>
<tr>
<th>Initial value</th>
<td ><span class="value0">$0</span></td>
</tr>
</table>
and the css would be:
td span.value0 {
display: none;
}
Of course the drawbacks are the same as with the previous method - you have to generate the value twice, once as text content and once as classname, and you need to add the inner span.
EDIT: dollar char is not valid in css classnames, so I removed it.
EDIT2: It turns out there is a way to do it without duplicating the value as both text and attribute. As a bonus, it turns out you don't need the inner span either if we rely on the :after pseudoclass (since it is that class that gets hidden, not the cell itself):
<table border="1">
<caption>Test</caption>
<tr>
<th>Values</th>
<td data-value="$100"></td>
</tr>
<tr>
<th>Initial value</th>
<td data-value="$0"></td>
</tr>
</table>
Using this css:
td:after {
content: attr(data-value);
}
td[data-value="$0"]:after {
content: "";
}

HTML Cell Button

I've a problem where I can't get my cell look like a button. I use a table as navbar, and I want the cell to be a button.
For the HTML part:
<table cellspacing="0" class="maintablewrapper_table01">
<tr class="maintablewrapper_tr01">
<th class="maintablewrapper_tr01_th01" colspan="6">Site Header<br><br>Head</th>
</tr>
<tr class="maintablewrapper_tr02">
<td class="tdlink" onclick="window.location('http://www.google.com');">Home</td>
<td>Producten</td>
<td>Diensten</td>
<td>Over ons</td>
<td>Informatie</td>
<td>Contact</td>
</tr>
</table>
Help much appreciated

Since you didn't put your CSS here or how you would want to see it, I have assumed the simplest.
This, at the roughest level, emulates what you might want to do.
CSS :
td {
background:#bada55;
color:#fff;
border:10px solid #fff;
padding:4px 10px;
}
Here it is... http://jsfiddle.net/550k4gm4/3/

Using empty() on tbody keeps resizing width of entire table

I am using jQuery to reload data inside the tbody. However, the header column width keeps resizing event though I put the fixed width for the columns. I am using Firefox.
Simple HTML table:
<table style="width:95%;" border="1" align="center" >
<thead>
<tr>
<td class="header" style="width:20%">ProductFamily
<select onchange="selectCategoryChange()">
<option "1">1</option>
<option "2">2</option>
</select>
</td>
<td class="header" style="width:20%">ProductNum</td>
<td class="header" style="width:30%">ProductDesc</td>
<td class="header" style="width:5%">DT Rate</td>
<td class="header" style="width:5%">List Rate</td>
<td class="header" style="width:5%">Man Hour Unit</td>
<td class="header" style="width:5%">Precall</td>
<td class="header" style="width:5%">SOW</td>
<td class="header" style="width:5%">Box</td>
</tr>
</thead>
<tbody id="tbodyDataRow">
<!-- Data Rows Here -->
</tbody>
</table>
When the tbody.empty(), it automatically resizes the width of the header columns, which make the page looks ugly. and then when I reload the new rows, it resize it back to original width. Here is my Jquery code.
$(document).ready(function() {
selectCategoryChange = function()
{
var tbody = $("#tbodyDataRow");
tbody.empty();
};
});

This works, but I've not tested it in all browsers. Change HTML to:
<table border="1" align="center">
<thead>
<tr>
<th>ProductNum</th>
<th>Product</th>
<th>DT Rate</th>
<th>List Rate</th>
<th>Man Hour Unit</th>
<th>Precall</th>
<th>SOW</th>
<th></th>
</tr>
</thead>
<tbody id="tbodyDataRow">
<!-- tbody Content -->
</tbody>
</table>
You should avoid inline styles anyway. Add this CSS file:
table {
border: 1px solid black;
}
.header {
background-color: #ccc;
font-weight: bold;
min-width: 200px;
}
That'll fix your problem, but again it's not cross-browser tested. You might consider allowing the resize.
Final result Fiddle

Your table style="width:95%;" is the problem. You are expecting a table with 8 X 200px = 1600px width, but your table should has 95% as width, which can be more or less than 1600px. If it be deferent, the headers will be ajusted automatic. I'm sorry about my english.

I had a similar problem with empty() function applied on ul element.
HTML structure :
<table>
<tr>
<td>
<ul id="list"></ul>
</td>
<td>
...
</td>
</tr>
I have a JS timer which call an ajax function responsible to refresh the content of the list (ul). To update the list (ul) I started to empty it with the following code:
$("#list").empty();
At each iteration, the column width was incremented even if content was the same. I finally replaced the content by the initial content by using replaceWith function and this time it was ok:
$("#list").replaceWith('<ul id="list"></ul>');

Sortable columns on a fixed-layout table in IE?

I'm attempting to create a table with reorderable columns using jQuery UI's "sortable" interaction. However, I'm having trouble on IE with table-layout: fixed.
The sortable is attached to the table's thead > tr and works just fine. The table looks correct when not dragging a column heading. While dragging, however, IE increases the width of the table to 100% and makes the dragged heading's column wider to make up the difference. I've tried specifying the width via <col> elements (which seem to be completely ignored by IE?), setting widths on each <td>, using forcePlaceholderSize, and combinations of the three, but nothing seems to work.
Code is below and on jsFiddle. Note that the logic to actually swap columns and correct their widths after dragging is finished hasn't been included; right now, I'm only concerned with the (mis-)behavior while dragging.
HTML:
<table>
<col style="width:90px">
<col style="width:130px">
<col style="width:70px">
<thead>
<tr>
<th style="width:90px">width 90</th>
<th style="width:130px">width 130</th>
<th style="width:70px">width 70</th>
</tr>
</thead>
<tbody>
<tr>
<td style="width:90px">foo</td>
<td style="width:130px">bar</td>
<td style="width:70px">baz</td>
</tr>
<tr>
<td style="width:90px">wibble</td>
<td style="width:130px">wobble</td>
<td style="width:70px">wubble</td>
</tr>
<tr>
<td style="width:90px">lorem</td>
<td style="width:130px">ipsum</td>
<td style="width:70px">dolor</td>
</tr>
</tbody>
</table>
CSS:
table {
border-collapse: collapse;
table-layout: fixed;
}
td, th {
background: white;
border: 1px solid #999;
padding: 0 .25em;
}
JS:
$("thead tr").sortable({
forcePlaceholderSize: true,
helper: "clone",
tolerance: "pointer"
});