I've a bit of experience coding in php but am fairly new to js. What I'm trying to do in js is create a simple order form, each line is to have a text box indicating the quantity to be ordered, product name and product price, with the latter to be populated from product array prod. My fairly rudimentary first attempt appears below, which needless to say doesn't work.
<body onload="populate()">
<table id="demo">
<thead>
<tr>
<th>Quantity</th>
<th>Product</th>
<th>Price</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
<script>
function populate(){
var prod; //array of objects with name and price attributes
var table = document.getElementById("theTable");
for (var i=0; i<prod.length; i++)
{
var newTr = table.insertRow(-1);
var numOrdered=document.createElement('input');
numOrdered.type='text';
numOrdered.id= "product "+i; //assigning id of "product i" to each product i
newTr.insertCell(0).appendChild(num);
newTr.insertCell(-1).appendChild(document.createTextNode(prod["name"]));
newTr.insertCell(-1).appendChild(document.createTextNode(prod["price"]));
}
}
</script>
</body>
Any and all help appreciated.
have a look at the snippet at the bottom.
what's changed is:
in this line you targeted the wrong id, should have been 'demo'
var table = document.getElementById("theTable");
you also needed to reference the correct value in your array inside the loop:
document.createTextNode(prod["name"]);
to:
document.createTextNode(prod[i]["name"]);
and lastly this line:
newTr.insertCell(0).appendChild(num);
to:
newTr.insertCell(0).appendChild(numOrdered);
hope this helps.
function populate() {
var prod = [{
name: 'box',
price: 20
}, {
name: 'plane',
price: 40
}]; //array of objects with name and price attributes
var table = document.getElementById("theTable");
for (var i = 0; i < prod.length; i++) {
var newTr = table.insertRow(-1);
var numOrdered = document.createElement('input');
numOrdered.type = 'text';
numOrdered.id = "product " + i; //assigning id of "product i" to each product i
newTr.insertCell(0).appendChild(numOrdered);
newTr.insertCell(-1).appendChild(document.createTextNode(prod[i]["name"]));
newTr.insertCell(-1).appendChild(document.createTextNode(prod[i]["price"]));
}
}
populate();
<table id="theTable">
<thead>
<tr>
<th>Quantity</th>
<th>Product</th>
<th>Price</th>
</tr>
</thead>
<tbody></tbody>
</table>
Try This code:
I am using jQuery, to create, append and iterating the array(each Loop).It is a better and effective way. Please use jQuery for DOM manipulation.
HTML:
<table id="demo">
<thead>
<tr>
<th>Quantity</th>
<th>Product</th>
<th>Price</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
CSS:
table,td{display:block}
th{width:100px}
td{margin:10px}
JS:
var prod=[{product:'samsung',price:100},{product:'apple',price:200},{product:'micromax',price:300}];
(function($){
$.each(prod,function(index,value){
$('#demo th:eq(0)').append("<td><input type='text'></td>");
$('#demo th:eq(1)').append("<td>"+value.product.toUpperCase()+"</td>");
$('#demo th:eq(2)').append("<td>"+value.price+"</td>")
});
})(jQuery);
Here is the JSFiddle Link:
https://jsfiddle.net/Dee0565/8vww1pwf/
I know this question gets asked alot but i have tried all of the clickevents for but cant seem to get this to work i am trying to get a value or string from a td here is the table i build
<table id="tblMain">
<thead>
<tr>
<th>Parcel ID</th>
<th>Quick Ref ID</th>
<th>Address</th>
<th>Tax Unit</th>
<th>Style</th>
<th>Arch Style</th>
<th>Validity Code</th>
<th>Sale Price</th>
<th>Sale Date</th>
<th>Year Built</th>
<th>Total Living Area</th>
<th>Lot Area</th>
<th>Bedrooms</th>
</tr>
</thead>
<tbody>
#foreach (var item in Model)
{
<tr class="side-link">
<td class="parcelIDCell"><a id="Parcelid" /> #item.ParcelId </td>
<td>#item.QuickRefId</td>
<td>#item.Address</td>
<td>#item.TaxunitA</td>
<td>#item.StyleA</td>
<td>#item.ArchStyleA</td>
<td>#item.ValCode</td>
<td>#item.SalePriceA</td>
<td>#item.SaleDateA</td>
<td>#item.YearBuilt</td>
<td>#item.LivingArea</td>
<td>#item.LotArea</td>
<td>#item.BedroomA</td>
#*<td>#item.ParcelID</td>
<td>#item.PropertyID</td>*#
</tr>
}
</tbody>
i just want to retrieve the parcel Id from the first row depending on which one i click on
some java script i have tried
<script>
var tbl = document.getElementById("tblMain");
if (tbl != null) {
for (var i = 0; i < tbl.rows.length; i++) {
for (var j = 0; j < tbl.rows[i].cells.length; j++)
tbl.rows[i].cells[j].onclick = function () { getval(this); };
}
}
function getval(cel) {
alert(cel.innerHTML);
}
there is more but i deleted them
Any advice would be greatly appreciated
you want either an id or the string? You can do this:
$("td").click(function() {
if($(this).hasClass("parcelIDCell")){
var ID = $(this).find("a").attr("id");
alert("Id is: " + ID);
}else{
var String = $(this).text();
alert("Text is: " + String);
}
});
It checks to see if the td being clicked has the class parcelIDCell, if it does it will find the a tag inside it and pull the id. If the class does not exist, it will just grab the text instead. Fiddle below:
FIDDLE
With jQuery:
$("#tblMain td").click(function() {
if ($(this).hasClass('parcelIDCell') {
alert($(this).find('a').attr('id));
} else {
alert($(this).text());
}
});
Update: getting the parcel id or the text, depending on the class of the td.
I'm using Josh Fraser's Backwards compatible window.postMessage() (http://www.onlineaspect.com/2010/01/15/backwards-compatible-postmessage) and I'm having trouble.
I have 2 iframes on a page and both iframes send different data to the same parent page. In other words, there are 2 XD.receivemessage functions getting 2 different messages from 2 different iframes. Here's a shortened version of my code:
<iframe id="IFRAME1" src="https://www.DOMAIN.com/PAGENAMEFIRST.php"></iframe>
<iframe id="IFRAME2" src="https://www.DOMAIN.com/PAGENAMESECOND.php"></iframe>
<div id="firstTable">
<table>
<tr>
<th>Name</th>
<th>Address</th>
<th>ID</th>
</tr>
<tr>
<td><!--this will be filled in by the data--></td>
<td><!--this will be filled in by the data--></td>
<td><!--this will be filled in by the data--></td>
</tr>
</table>
</div>
<div id="secondTable">
<table>
<tr>
<th>Email</th>
<th>Twitter Handle</th>
<th>ID</th>
</tr>
<tr>
<td><!--this will be filled in by the data--></td>
<td><!--this will be filled in by the data--></td>
<td><!--this will be filled in by the data--></td>
</tr>
</table>
</div>
<script type="text/javascript">
$(document).ready(function() {
//FIRST DATA PULL
var encodeUriFirst = encodeURIComponent(document.location.href);
var getMessageFirst = 'https://www.DOMAIN.com/PAGENAMEFIRST.php#' + encodeUriFirst;
$("#IFRAME1").attr('src',getMessageFirst);
XD.receiveMessage(function(getMessageFirst){
var getDataFirst = getMessageFirst.data;
var getDataFirstEach = new Array();
for(var a=0; a<getDataFirst.length; a++){
getDataFirstEach = getDataFirst.split("~,~");
$('div#firstTable table td:nth-child(0)').text(getDataFirstEach[0].replace(/[~]/g,""));
}
}, 'https://www.DOMAIN.com');
//SECOND DATA PULL
var encodeUriSecond = encodeURIComponent(document.location.href);
var getMessageSecond = '//www.DOMAIN.com/PAGENAMESECOND.php#' + encodeUriSecond;
$("#IFRAME2").attr('src',getMessageSecond);
XD.receiveMessage(function(getMessageSecond){
var getDataSecond = getMessageSecond.data;
var getDataSecondEach = new Array();
for(var a=0; a<getDataFirst.length; a++){
getDataSecondEach = getDataSecond.split("~,~");
$('div#secondTable table td:nth-child(0)').text(getDataSecondEach[0].replace(/[~]/g,""));
}
}, 'https://www.DOMAIN.com');
});
</script>
Please keep in mind that I've scaled back the code significantly. Each getDataFirst or getDataSecond
It actually works as far as getting the data from both iframes (send/receive both work). My data comes through in the format ~name~,~address~,~ID~ for the first set of data and ~email~,~twitter~,~ID~ for the second set.
I'm trying to get the data to populate the 2 tables. The For loops look for the ID in the table and if the ID matches, it fills in the other fields associated with that ID. In some cases, the ID from the first data set will be the same as the ID from the second data set. When that happens, the for loops place the data in both tables instead of the appropriate one. I'm wondering why this would happen since I'm specifically targeting the table inside either $('div#firstTable') or $('div#secondTable') for the output. For example:
$('div#firstTable table td:nth-child(0)').text(getDataFirstEach[0]);
inside the For loop is placing getDataFirstEach[0] into both the firstTable and secondTable tables?
Can anyone tell me why?
AS REQUESTED, HERE IS THE FULL JS:
var encodeUriGifts = encodeURIComponent(document.location.href);
var giftsMessage = '//www.DOMAIN.org/firstpage.php#' + encodeUriGifts;
$("#IFRAME1").attr('src',giftsMessage);
XD.receiveMessage(function(giftsMessage){
var getDataGifts = giftsMessage.data;
var currentRecordGifts = new Array();
var getGiftsLines = getDataGifts.split("|"); //LINES OF DATA ARE PIPE SEPARATED
for(var bCnt=0;bCnt < getGiftsLines.length;bCnt++){
var getGiftsEach = getGiftsLines[bCnt].split("`,`"); //EACH ITEM IS SEPARATED BY `,`
for(var cCnt=0;cCnt < getGiftsEach.length;cCnt++){
if (getGiftsEach[cCnt]!=="" && getGiftsEach[cCnt]!=="undefined"){
currentRecordGifts[bCnt] = " <td class='giftamount'>"+getGiftsEach[1]+"</td><td class='giftdate'>"+getGiftsEach[2].replace(/[`]/g,"")+"</td>";
}
if (cCnt==2) {
var thisGiftsID = getGiftsEach[0].replace(/[`]/g,"");
$('#firstTable table td:contains("'+thisGiftsID+'")').closest('tr').find('td:nth-child(3)').after(currentRecordGifts[bCnt]);
}
}
if (bCnt==0){
$('#firstTable table th:nth-child(3)').after('<th class="BBListingHeading DirectoryListingHeading" scope="col" style="white-space: nowrap;">Last Gift Amount</th><th class="BBListingHeading DirectoryListingHeading" scope="col" style="white-space: nowrap;">Last Gift Date</th>');
}
}
}, 'https://www.DOMAIN.org');
var encodeUriChanges = encodeURIComponent(document.location.href);
var changesMessage = '//www.DOMAIN.org/secondpage.php#' + encodeUriChanges;
$("#IFRAME2").attr('src',changesMessage);
XD.receiveMessage(function(changesMessage){
var getDataChanges = changesMessage.data;
var currentRecordChanges = new Array();
var getChangesLines = getDataChanges.split("|");
$('#secondTable table tr td:nth-child(3)').each( function() {
$('#secondTable table tr td:nth-child(3)').after('<td class="BBListingItem DirectoryListingItem" style="white-space: nowrap;"><ul class="changes"></ul></td>');
});
for(var dCnt=0;dCnt < getChangesLines.length;dCnt++){
var getChangesEach = getChangesLines[dCnt].split("`,`");
for(var eCnt=0;eCnt < getChangesEach.length;eCnt++){
if (getChangesEach[eCnt]!=="" && getChangesEach[eCnt]!=="undefined"){
currentRecordChanges[dCnt] = "<li class='change'>"+getChangesEach[2]+" ("+getChangesEach[1].replace(/[`]/g,"")+")</li>";
}
if (eCnt==2) {
var thisChangesID = getChangesEach[0].replace(/[`]/g,"");
$('#secondTable table td:contains("'+thisChangesID+'")').closest('tr').find('td ul.changes').append(currentRecordChanges[dCnt]);
}
if (dCnt==0){
$('#changesdiv .DirectoryListingTable th:nth-child(3)').after('<th class="BBListingHeading DirectoryListingHeading" scope="col" style="white-space: nowrap;">Change Details</th>');
}
}
}
}, 'https://www.DOMAIN.org');
I want to build a flot chart from a table. The table is built using the jquery datatables plugin. The table can be edited inline.
I was wondering if anyone had any tips to display the data in flot. Would you pull the data from json or directly from the chart to build the flot chart?
The data is populated in dynamically using the datatables jquery plugin.
The table looks like this..
<div id="plotarea">
<table>
<caption>GDP, based on exchange rates, over time. Values in billion USDs.</caption>
<tr>
<td></td>
<th scope="col">2003</th>
<th scope="col">2002</th>
<th scope="col">2001</th>
<th scope="col">2000</th>
<th scope="col">1999</th>
<th scope="col">1998</th>
</tr>
<tr>
<th scope="row">USA</th>
<td>10,882</td>
<td>10,383</td>
<td>10,020</td>
<td>9,762</td>
<td>9,213</td>
<td>8,720</td>
</tr>
<tr>
<th scope="row">EU</th>
<td>10,970</td>
<td>9,040</td>
<td>8,303</td>
<td>8,234</td>
<td>8,901</td>
<td>8,889</td>
</tr>
</table>
</div>
Thanks!
You can use loops to go through your table and build the data array for flot. Something like this:
var headerTr = $('table tr:first()');
var rowCount = $('table tr').length - 1;
var data = [];
for (var row = 0; row < rowCount; row++) {
var tr = $('table tr').eq(row + 1);
var dataseries = {
label: tr.find('th').text(),
data: []
};
for (var col = 0; col < tr.find('td').length; col++) {
var xval = headerTr.find('th').eq(col).text();
var yval = tr.find('td').eq(col).text().replace(',', '');
dataseries.data.push([xval, yval]);
}
data.push(dataseries);
};
Here is a fiddle with a working example. The drawing is started by button click. For your datatables you could change that to an onchange event or something similar.
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.