Something in the TD innerHTML content prevents it from being replaced see https://jsfiddle.net/ot8vfwc0/
How to force it to be replaced programmatically even if there is that kind of hidden weird characters ?
<table>
<thead>
<tr>
<th scope="col" colspan="1">TITLE</th>
</tr>
<tr>
<th>Column 1</th>
<th>Column 2</th>
</tr>
</thead>
<tbody>
<tr>
<td><br>WEIRD
DO NOT WANT TO BE REPLACED</td>
</tr>
</tbody>
</table>
script:
var myTable = document.getElementsByTagName('table')[0];
var myTbody = myTable.getElementsByTagName('tbody')[0];
_tr = myThead.getElementsByTagName("TR")[0];
_td = _tr.getElementsByTagName("TD")[0];
_th.innerHTML = "TEXT REPLACED";
This is some pretty weird 1998 JavaScript element extraction. Not to mention you're allocating so many vars you're clearly forgetting which ones you defined.
Simplify this with modern JS instead:
var td = document.querySelectorAll("table tbody tr td")[0];
td.textContent="new text";
This gets all <td> elements part of a table→tbody→tr→td chain, we pick the first one, then we set its new content. as text, not as HTML, because that would be silly and a potential security risk if the content comes from anything "not hard-coded".
If we want to add DOM elements in it, we'd use document.createElement(...) and td.appendChild(...) of course:
// find and clear the element
var td = document.querySelectorAll("table tbody tr td")[0];
td.textContent='';
// form new content and add it in
var p = document.createElement("p");
p = "check me out, I'm a paragraph";
td.appendChild(p);
Keep it simple: use modern JavaScript. It got quite a bit simpler in the last 17 years.
Try this:
var myTable = document.getElementsByTagName('table')[0];
var myTbody = myTable.getElementsByTagName('tbody')[0];
_tr = myTbody.getElementsByTagName("TR")[0];
_td = _tr.getElementsByTagName("TD")[0];
_td.innerHTML = "TEXT REPLACED";
Replace myThead with myTbody and _th with _td.
myThead and _th are undefined. Replace them with myTbody and _td and it will work.
I would like to split this entire table into three sub tables using Javascript. Each table should retain it's header information.
I cannot adjust the id's or classes as they are generated by a web application, so I need to make do with what is available.
I've been trying to crack this with Jfiddle for quite awhile and am getting frustrated. I'm pretty new to Javascript, but can't image this would require a lot of code. If anyone knows how to split this apart by row size as well (i.e. Split Table up, but selectively), that would be appreciated as well.
I'm limited to Javascript and Jquery 1.7.
<div id="serviceArray">
<table border="1" class="array vertical-array">
<thead>
<tr>
<th>#</th>
<th>Savings</th>
<th>Expenses</th>
<th>Savings</th>
<th>Expenses</th>
<th>Savings</th>
<th>Expenses</th>
</tr>
</thead>
<tbody>
<tr>
<td>Sum</td>
<td>$180</td>
<td>$500</td>
<td>$300</td>
<td>$700</td>
<td>$600</td>
<td>$1000</td>
</tr>
<tr>
<td>Home</td>
<td>$100</td>
<td>$200</td>
<td>$200</td>
<td>$300</td>
<td>$400</td>
<td>$500</td>
</tr>
<tr>
<td>Work</td>
<td>$80</td>
<td>$300</td>
<td>$100</td>
<td>$400</td>
<td>$200</td>
<td>$500</td>
</tr>
</tbody>
</table>
</div>
Did you mean like this?
var tables = $('#serviceArray table tbody tr').map(function () { //For each row
var $els = $(this).closest('tbody') //go to its parent tbody
.siblings('thead').add( //fetch thead
$(this) //and add itself (tr)
.wrap($('<tbody/>')) //wrapping itself in tbody
.closest('tbody')); //get itself with its tbody wrapper
return $els.clone() //clone the above created steps , i.e thead and tbody with one tr
.wrapAll($('<table/>', { //wrap them all to a new table with
'border': '1', //attributes.
'class': 'array vertical-array'
})
).closest('table'); //get the new table
}).get();
$('#serviceArray table').remove();
$('body').append(tables); //append all to the table.
Demo
Or just simply clone the table and remove all other trs from tbody except this one and add it to DOM (Much Shorter Solution).
var tables = $('#serviceArray table tbody tr').map(function (idx) {
var $table = $(this).closest('table').clone().find('tbody tr:not(:eq(' + idx + '))').remove().end();
return $table;
}).get();
Demo
Each of the methods used has documentation available in web and you can use this to work out something yourself to what you need.
You can use simple Javascript for table creation and it will generate rows according to your returned response from api.
var tableHeader = this.responseJsonData.Table_Headers;
var tableData = this.responseJsonData.Table_Data;
let table = document.querySelector("table");
function generateTableHead(table, data) {
//alert("In Table Head");
let thead = table.createTHead();
let row = thead.insertRow();
for (let key of data) {
let th = document.createElement("th");
let text = document.createTextNode(key);
th.appendChild(text);
row.appendChild(th);
}
}
function generateTable(table, data) {
// alert("In Generate Head");
for (let element of data) {
let row = table.insertRow();
for (key in element) {
let cell = row.insertCell();
let text = document.createTextNode(element[key]);
cell.appendChild(text);
}
}
}
How can I delete all rows of an HTML table except the <th>'s using Javascript, and without looping through all the rows in the table? I have a very huge table and I don't want to freeze the UI while I'm looping through the rows to delete them
this will remove all the rows:
$("#table_of_items tr").remove();
Keep the <th> row in a <thead> and the other rows in a <tbody> then replace the <tbody> with a new, empty one.
i.e.
var new_tbody = document.createElement('tbody');
populate_with_new_rows(new_tbody);
old_tbody.parentNode.replaceChild(new_tbody, old_tbody)
Very crude, but this also works:
var Table = document.getElementById("mytable");
Table.innerHTML = "";
Points to note, on the Watch out for common mistakes:
If your start index is 0 (or some index from begin), then, the correct code is:
var tableHeaderRowCount = 1;
var table = document.getElementById('WRITE_YOUR_HTML_TABLE_NAME_HERE');
var rowCount = table.rows.length;
for (var i = tableHeaderRowCount; i < rowCount; i++) {
table.deleteRow(tableHeaderRowCount);
}
NOTES
1. the argument for deleteRow is fixed
this is required since as we delete a row, the number of rows decrease.
i.e; by the time i reaches (rows.length - 1), or even before that row is already deleted, so you will have some error/exception (or a silent one).
2. the rowCount is taken before the for loop starts
since as we delete the "table.rows.length" will keep on changing, so again you have some issue, that only odd or even rows only gets deleted.
Hope that helps.
This is an old question, however I recently had a similar issue.
I wrote this code to solve it:
var elmtTable = document.getElementById('TABLE_ID_HERE');
var tableRows = elmtTable.getElementsByTagName('tr');
var rowCount = tableRows.length;
for (var x=rowCount-1; x>0; x--) {
elmtTable.removeChild(tableRows[x]);
}
That will remove all rows, except the first.
Cheers!
If you can declare an ID for tbody you can simply run this function:
var node = document.getElementById("tablebody");
while (node.hasChildNodes()) {
node.removeChild(node.lastChild);
}
Assuming you have just one table so you can reference it with just the type.
If you don't want to delete the headers:
$("tbody").children().remove()
otherwise:
$("table").children().remove()
hope it helps!
I needed to delete all rows except the first and solution posted by #strat but that resulted in uncaught exception (referencing Node in context where it does not exist). The following worked for me.
var myTable = document.getElementById("myTable");
var rowCount = myTable.rows.length;
for (var x=rowCount-1; x>0; x--) {
myTable.deleteRow(x);
}
the give below code works great.
It removes all rows except header row. So this code really t
$("#Your_Table tr>td").remove();
this would work iteration deletetion in HTML table in native
document.querySelectorAll("table tbody tr").forEach(function(e){e.remove()})
Assing some id to tbody tag. i.e. . After this, the following line should retain the table header/footer and remove all the rows.
document.getElementById("yourID").innerHTML="";
And, if you want the entire table (header/rows/footer) to wipe out, then set the id at table level i.e.
How about this:
When the page first loads, do this:
var myTable = document.getElementById("myTable");
myTable.oldHTML=myTable.innerHTML;
Then when you want to clear the table:
myTable.innerHTML=myTable.oldHTML;
The result will be your header row(s) if that's all you started with, the performance is dramatically faster than looping.
If you do not want to remove th and just want to remove the rows inside, this is working perfectly.
var tb = document.getElementById('tableId');
while(tb.rows.length > 1) {
tb.deleteRow(1);
}
Pure javascript, no loops and preserving headers:
function restartTable(){
const tbody = document.getElementById("tblDetail").getElementsByTagName('tbody')[0];
tbody.innerHTML = "";
}
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.1.1/dist/css/bootstrap.min.css" rel="stylesheet"/>
<table id="tblDetail" class="table table-bordered table-hover table-ligth table-sm table-striped">
<thead>
<tr>
<th>Header 1</th>
<th>Header 2</th>
<th>Header 2</th>
<th>Header 2</th>
</tr>
</thead>
<tbody>
<tr>
<td>
a
</td>
<td>
b
</td>
<td>
c
</td>
<td>
d
</td>
</tr>
<tr>
<td>
1
</td>
<td>
2
</td>
<td>
3
</td>
<td>
4
</td>
<tr>
<td>
e
</td>
<td>
f
</td>
<td>
g
</td>
<td>
h
</td>
</tr>
</tr>
</tbody>
</table>
<button type="button" onclick="restartTable()">restart table</button>
If you have far fewer <th> rows than non-<th> rows, you could collect all the <th> rows into a string, remove the entire table, and then write <table>thstring</table> where the table used to be.
EDIT: Where, obviously, "thstring" is the html for all of the rows of <th>s.
This works in IE without even having to declare a var for the table and will delete all rows:
for(var i = 0; i < resultsTable.rows.length;)
{
resultsTable.deleteRow(i);
}
this is a simple code I just wrote to solve this, without removing the header row (first one).
var Tbl = document.getElementById('tblId');
while(Tbl.childNodes.length>2){Tbl.removeChild(Tbl.lastChild);}
Hope it works for you!!.
Assign an id or a class for your tbody.
document.querySelector("#tbodyId").remove();
document.querySelectorAll(".tbodyClass").remove();
You can name your id or class how you want, not necessarily #tbodyId or .tbodyClass.
#lkan's answer worked for me, however to leave the first row, change
from
for (var x=rowCount-1; x>0; x--)
to
for (var x=rowCount-1; x>1; x--)
Full code:
var myTable = document.getElementById("myTable");
var rowCount = myTable.rows.length;
for (var x=rowCount-1; x>1; x--) {
myTable.deleteRow(x);
}
This will remove all of the rows except the <th>:
document.querySelectorAll("td").forEach(function (data) {
data.parentNode.remove();
});
Same thing I faced. So I come up with the solution by which you don't have to Unset the heading of table only remove the data..
<script>
var tablebody =document.getElementById('myTableBody');
tablebody.innerHTML = "";
</script>
<table>
<thead>
</thead>
<tbody id='myTableBody'>
</tbody>
</table>
Try this out will work properly...
Assuming the <table> element is accessible (e.g. by id), you can select the table body child node and then remove each child until no more remain. If you have structured your HTML table properly, namely with table headers in the <thead> element, this will only remove the table rows.
We use lastElementChild to preserve all non-element (namely #text nodes and ) children of the parent (but not their descendants). See this SO answer for a more general example, as well as an analysis of various methods to remove all of an element's children.
const tableEl = document.getElementById('my-table');
const tableBodyEl = tableEl.querySelector('tbody');
// or, directly get the <tbody> element if its id is known
// const tableBodyEl = document.getElementById('table-rows');
while (tableBodyEl.lastElementChild) {
tableBodyEl.removeChild(tableBodyEl.lastElementChild);
}
<table id="my-table">
<thead>
<tr>
<th>Name</th>
<th>Color</th>
</tr>
</thead>
<tbody id="table-rows">
<tr>
<td>Apple</td>
<td>Red</td>
</tr>
<!-- comment child preserved -->
text child preserved
<tr>
<td>Banana</td>
<td>Yellow</td>
</tr>
<tr>
<td>Plum</td>
<td>Purple</td>
</tr>
</tbody>
</table>
Just Clear the table body.
$("#tblbody").html("");
const table = document.querySelector('table');
table.innerHTML === ' ' ? null : table.innerHTML = ' ';
The above code worked fine for me. It checks to see if the table contains any data and then clears everything including the header.
I have a table structure:
<table id="tableId">
<tbody id="tbodyId">
<tr id="trId1">
<td>id</td><td>name</td>
</tr>
</tbody>
</table>
I am adding new row with simple Javascript like this:
var itemsContainer = dojo.byId('tbodyId');
itemCount++; //it will give id to tr i.e. trId2
var newItemNode = document.createElement('tr');
newItemNode.setAttribute("id", 'trId' + itemCount);
newItemNode.innerHTML ='<td>id</td><td>anotherName</td>';
itemsContainer.appendChild(newItemNode);
All works fine in Firefox but row is not appended in IE. New table after it in Firefox becomes:
<table id="tableId">
<tbody id="tbodyId">
<tr id="trId1">
<td>id</td><td>name</td>
</tr>
<tr id="trId2">
<td>id</td><td>anotherName</td>
</tr>
</tbody>
</table>
I saw other codes and help. I only want one tbody in this table with simple Javascript no jQuery.
There are special functions for creating table cells ( and rows ) eg - insertRow for rows and insertCell for cells - it works in all browsers
var newItemNode = itemsContainer.insertRow( itemsContainer.rows.length - 1 );
newItemNode.setAttribute("id", 'trId' + itemCount);
var cell = newItemNode.insertCell( 0 );
cell.innerHTML = 'id';
...
PS. I think DOJO Framework have something for inserting rows and cells
First off, this jsfiddle works fine in FF6 & IE8
Make sure that your real html has the proper markup. Your example shows a closing tbody element without the slash
<tr id="trId2">
<td>id</td><td>anotherName</td>
</tr>
<tbody> <!-- This line should be </tbody> -->
IE is inconsistant with its acceptance of bad markup.
In addition, code like this:
var newItemNode = document.createElement('tr');
newItemNode.setAttribute("id", 'trId' + itemCount);
newItemNode.innerHTML ='<td>id</td><td>anotherName</td>';
Is exactly the sort of code that toolkits like dojo (and its smarter cousin, jQuery) are built to avoid. I suspect the code for creating a new row are different in the version of IE you're testing on.
try this
<html>
<script language = "javascript">
function kk()
{
var itemsContainer = document.getElementById("tbodyId");
var newItemNode = document.createElement('tr');
newItemNode.setAttribute("id", 'trId' + 1);
var newCellItem1 = document.createElement('td');
newCellItem1.innerHTML = "id";
var newCellItem2 = document.createElement('td');
newCellItem2.innerHTML = "anotherName";
newItemNode.appendChild(newCellItem1);
newItemNode.appendChild(newCellItem2);
itemsContainer.appendChild(newItemNode);
}
</script>
<table id="tableId">
<tbody id="tbodyId">
<tr id="trId1">
<td>id</td><td>name</td>
</tr>
</tbody>
</table>
<input type="button" value = "heihei" onclick = "kk();"></input>
</html>
I want reorder table rows using JavaScript .
for example take the following dummy table:
<table>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
<tr>
<td>A</td>
<td>B</td>
<td>C</td>
<td>D</td>
</tr>
<tr>
<td>A1</td>
<td>B1</td>
<td>C1</td>
<td>D1</td>
</tr>
</table>
I want to do this in JavaScript without using jQuery. I want to show the A1,B1,C1,D1.. row as the first row and then 1,2,3,4 row and then A,B,C,D row.
I know that there will be some wait time on the client side but I need to do it in the client side. Is there some generic solution to do this, for any number of rows?
If I understand correctly, you are asking how to take the last row and make it the first row, pushing down the rest. This should do it:
<table id="mytable">
...
</table>
<script type="text/javascript">
var tbl = document.getElementById('mytable');
var rows = tbl.getElementsByTagName('tr');
var firstRow = rows[0];
var lastRow = rows[rows.length];
firstRow.parentNode.insertBefore(lastRow.parentNode.removeChild(lastRow), firstRow);
</script>
Assuming your table does not have nested tables. At which point this would need to be a little smarter. This also assumes you're not using TBODY and THEAD nodes. But I'm sure you can get the idea and enhance it from there.
Do:
var table = ...; // Get reference to table (by ID or other means)
var lastRow = table.rows[table.rows.length - 1];
lastRow.parent.insertBefore(table.rows[0], lastRow);
The best way to solve this in Javascript is:
Give the Tr.. a unique name. for eg: X_Y,X_Z,A_Y,A_Z
Now add a hidden lable or text Box which gives the sorting order from the server i.e When the page renders I want to sort it All the Tr's that have a ID starting with A should come first and All the Z's should come second.
<asp:label id="lblFirstSortOrder" runat="server" style="display:none;">A,X</label>
<asp:label id="lblSecondSortOrder" runat="server" style="display:none;">Z,Y</label>
When the page renders..the order should be A_Z,A_Y,X_Z,X_Y
Before Rendering this is table that comes from the aspx file:
<table>
<tr id='Tr_Heading'>
<td>A</td>
<td>B</td>
</tr>
<tr id="Tr_X_Y">
<td>GH</td>
<td>GH1</td>
</tr>
<tr id="tr_X_Z">
<td>HU</td>
<td>HU1</td>
</tr>
<tr id="tr_A_Z">
<td>JI</td>
<td>JI1</td>
</tr>
<tr id="tr_A_Y">
<td>JI</td>
<td>JI1</td>
</tr>
Script:
function SortAndArrange()
{
var firstList = document.getElementById('lblFirstSortOrder').value;
var secondList = document.getElementById('lblSecondSortOrder').value;
var firstTypes = new Array();
firstTypes = firstList.split(',');
var secondLists = new Array();
secondLists = secondList.split(',');
var refNode = document.getElementById('Tbl_' + firstTypes[0] + "_" + secondTypes[0]);
for (var i = 0; i<firstTypes.length; i++)
{
for (var j = 0; j< secondTypes.length;j++)
{
var TrName = 'Tbl_'+firstTypes[i]+'_'+secondTypes[j];
var FirstSecondTrs = document.getElementById(TrName);
if (FirstSecondTrs)
{
FirstSecondTrs.parentNode.removeChild(FirstSecondTrs);
insertAfter(refNode,FirstSecondTrs);
refNode = FirstSecondTrs;
}
}
}
}
function insertAfter( referenceNode, newNode )
{
referenceNode.parentNode.insertBefore( newNode, referenceNode.nextSibling );
}
I hope you guys get the idea.. for me the sorting order will always come from the server and not from the user of the page...
Thanks a Lot for all the answers.. Apprecite it. Helped me get to this solution.
Thanks,
Ben