Develop Reference

Javascript filtering on multiple table columns

I've tried using the below js code to filter table rows. The code is originally from w3schools but I've done some modification to target all my input values. The filtering works great for one column but as fast as I try to input a value on a second column, it overwrites the previous filter.
For exampe if I filter for "Test" in column 1 it works great and hides the second row. If I after that also filter column 2 for id "2" it will hide the first row and instead display the second row for id 2. Is it possible to modify the code so that it only filters on the rows that are left and shown, not all the rows all together. Ive tried several hours trying to target only tr[i].style.display != "none"; but no success. My goal is something like this: DataTables. I've seen and read tons of other threads on here regarding this issue but nothing seems to work. Appreciate all the help and guidance.
Name
ID
Test
1
Another test
2
[Input field for filter]
[Input field for filter]
$(document).ready(function() {
document.querySelectorAll('.search').forEach(item => {
item.addEventListener('keyup', event => {
var input, filter, table, tr, td, i, txtValue;
input = event.target;
filter = input.value.toUpperCase();
table = document.getElementById("example");
tr = table.getElementsByTagName("tr");
for (i = 0; i < tr.length; i++) {
td = tr[i].getElementsByTagName("td")[event.target.getAttribute('data-value')];
if (td) {
txtValue = td.textContent || td.innerText;
if (txtValue.toUpperCase().indexOf(filter) > -1) {
tr[i].style.display = "";
} else {
tr[i].style.display = "none";
}
}
}
})
})
} );

Your code was a mix of vanillaJS and jQuery, and tagged for both, so I went with jquery since it's a little more concise and easier to read.
Basically, you need to check both cells in each row against both search filters every time the key is pressed. To do so, I made things a tiny bit easier by giving the data TR rows a class so we're not searching the header or the cells with the search boxes. Then, I just compare filter 1 with cell 1 and filter 2 with cell 2 for each row. If there is a match for either, that row stays visible, otherwise it's hidden. I had to add in some logic in case there wasn't a value in either filter input.
Couple other notes:
$('.search').eq(0) is the same as the FIRST element with the class search
$(el).find('td').eq(0).text().trim().toLowerCase() is the same as find the FIRST TD tag's text, trim off the extra whitespace and convert to lowercase
$(document).ready(function() {
$('.search').keyup(function() {
let search1 = $('.search').eq(0).val().toLowerCase();
let search2 = $('.search').eq(1).val().toLowerCase();
$('.s-table tr.data').each(function(i, el) {
let val1 = $(el).find('td').eq(0).text().trim().toLowerCase()
let val2 = $(el).find('td').eq(1).text().trim().toLowerCase()
let ok = (search1 && val1.indexOf(search1) !== -1) || (search2 && val2.indexOf(search2) !== -1)
if (ok) $(el).closest('tr').show();
else $(el).closest('tr').hide();
})
return
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table class="s-table">
<thead>
<tr>
<th>Name</th>
<th>ID</th>
</tr>
</thead>
<tbody>
<tr class='data'>
<td>Test</td>
<td>1</td>
</tr>
<tr class='data'>
<td>Another test</td>
<td>2</td>
</tr>
<tr>
<td><input data-col='0' class='search' placeholder='filter'></td>
<td><input data-col='1' class='search' placeholder='filter'></td>
</tr>
</tbody>
</table>

Filter multiple tables using query string with javascript

first I'm sorry if at some point I express myself badly, English is not my native language. I am developing an application in which the user sends 2 values through a form and in another page I use one of those data (string with comma separated options) to show a specific table and hide the others, and with the second data (Integer) I show one of the rows of that table.
What I already have:
I have the form and send the data through the Query String, I capture that data, I assign a variable to the integer and to the text string I separate it by commas and create an array.
URL Example: app.tables.example/?id=123&ops=option1%2c+option2
//Read parameters sent by form
const param = new Proxy(new URLSearchParams(window.location.search), {
get: (searchParams, prop) => searchParams.get(prop)
});
//Assign integer to a variable
let num = param.id;
//Assign options to a variable
let op = param.ops;
//Separate string with commas
let opsplit = op.split(',');
Up to here everything is perfect, I can print all the variables without any problem, now I need to compare the array with the id of each table, show the one that corresponds and hide the others. (The id of the tables is the same that user passes with the text string).
The tables look something like this:
<div id="option1" class="table-1">
<table width="100%">
<thead>
<tr>
<th align="left">Option1</th>
<th align="left">Integer</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">Number</td>
<td align="left">Info</td>
</tr>
<tr>
<td align="left">1</td>
<td align="left">textblock</td>
</tr>
<tr>
<td align="left">2</td>
<td align="left">textblock</td>
</tr>
</tbody>
</table>
</div>
//As you can see the id of each table corresponds to what the user chose
<div id="option2" class="table-1">
<table width="100%">
<thead>
<tr>
<th align="left">Option2</th>
<th align="left">Integer</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">Number</td>
<td align="left">Info</td>
</tr>
<tr>
<td align="left">1</td>
<td align="left">textblock</td>
</tr>
<tr>
<td align="left">2</td>
<td align="left">textblock</td>
</tr>
</tbody>
</table>
</div>
The problem:
I'm supposed to use the array elements in a "for" loop and compare them with the id of each table, then show that table and hide others, but I don't know exactly how to do it.
function myFunction() {
var input, filter, table, tr, td, i, y, txtValue;
for (r = 0; r<opsplit.length; r++){
input = opsplit[r];
filter = function(x){
return x.toUpperCase();
};
opsplit = opsplit.map(filter);
}
//When I test this, it does not return any value,
//innerHTML error
for(y = 0; y<opsplit.length; y++){
table = document.getElementById(opsplit[y]).innerHTML;
//I use this section to test, it should show me the row,
//but since the previous loop failed, it does nothing.
// What I really need is to show the whole
// table where this data is located and hide the other tables.
tr = table.getElementsByTagName("tr");
for (i = 0; i < tr.length; i++) {
td = tr[i].getElementsByTagName("td")[0];
if (td) {
txtValue = td.textContent || td.innerText;
if (txtValue.toUpperCase().indexOf(filter) > -1) {
tr[i].style.display = "";
} else {
tr[i].style.display = "none";
}
}
}
}
}
myFunction();
I am really stuck at the moment and would appreciate any help. What is the correct way to use the string array, and how can I hide the tables that the user does not need?

Ok, thanks to those who took the time to write a comment, but I found the solution, I had to convert the form data to a string and an integer. Then I was able to compare that string to the classes id. I am writing the answer in case anyone finds it useful.
//Read parameters sent by form
const param = new Proxy(new URLSearchParams(window.location.search), {
get: (searchParams, prop) => searchParams.get(prop)
});
//Assign number to a variable
let num = param.id;
//Convert to integer
let numint = parseInt(num);
//Assign options to a variable
let op = param.ops;
//Convert to String
let opstr = op.string();
//Separate string with commas
let opsplitstr = opstr.split(',');
//Assign class to a variable
tableclass = document.getElementsByClassName('table-1');
//Compare table class ids with string array
if (opsplitstr[0] == tableclass[0].id{
}
//We need a loop if we need compare all elements
TLDR: The URL does not send information about the data type, so I had to read it and convert it according to my need.

Search Bar in HTML and JS

I created an HTML table with a lot of information about a country. Now I want the user to be able to search in this table for a piece of information like the Area.
function selectRow() {
var input, filter, table, trs, td;
input = document.getElementById("search");
filter = input.value.toUpperCase();
table = document.getElementById("dataRows");
trs = table.getElementsByTagName("tr");
for (let index = 0; index < trs.length; index++) {
td = trs[index].getElementsByTagName("td")[0];
if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {
trs[index].display = "";
} else {
trs[index].display = "none";
}
}
}
<input type="text" id="search" onkeyup="selectRow()" placeholder="Search.." />
<table id="dataRows">
<tr>
<th>Attributes</th>
<th>Value</th>
</tr>
<tr>
<td>Name</td>
<td>Australia</td>
</tr>
<tr>
<td>Area</td>
<td>7,741,220.00</td>
</tr>
<tr>
<td>Population</td>
<td>25,466,459</td>
</tr>
</table>
But when I try to use it I get the error: "Uncaught TypeError: Cannot read property 'innerHTML' of undefined"
I can't figure out why the td is undefined.

The most helpful thing to demonstrate first, I think, is a method that will let you diagnose this yourself in future. This sort of difficulty will occur all the time, so here is one method to help you generally problem solve these types of issues.
You know that <td> is not the value you expect, so check your expectation by outputting the values that you use to acquire <td>. You can do that by adding these console.log lines at the top of your loop:
for (let index = 0; index < trs.length; index++) {
console.log("trs[index]",trs[index]);
console.log("trs[index].getElementsByTagName(td)", trs[index].getElementsByTagName("td"));
With that, you should see that the first <tr> has <th> elements, not <td>! These surprises happen all the time, it's great to learn tricks to check your assumptions the quickest way you can.
Here's a very simple solution, the first and last line of this block are the same in your code:
for (let index = 0; index < trs.length; index++) {
var tds = trs[index].getElementsByTagName("td");
if(tds.length == 0) {
continue;
}
td = tds[0];
if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {
Looks like you've just started working through building this, I hope this helps!

<script>
function myFunction() {
// Declare variables
var input, filter, ul, li, a, i, txtValue;
input = document.getElementById('myInput');
filter = input.value.toUpperCase();
ul = document.getElementById("myUL");
li = ul.getElementsByTagName('li');
// Loop through all list items, and hide those who don't match the search query
for (i = 0; i < li.length; i++) {
a = li[i].getElementsByTagName("a")[0];
txtValue = a.textContent || a.innerText;
if (txtValue.toUpperCase().indexOf(filter) > -1) {
li[i].style.display = "";
} else {
li[i].style.display = "none";
}
}
}
</script>
use ur code like this to get best result and without any error
edit
I think the tricky part of this is actually the accepting of user input intelligently. Therefore, I'd say the best thing to do is to pass off your searching to an autocomplete-type plugin. Once the page is ready, you pass the focus to an input text box, and then let the plugin do its magic as you search...
For example, you could use the quicksearch plugin.
Then given a table of data and an input like this:
<input id="searcher" type="text" name="searcher">
You could have a ready function that looks like this:
$('#searcher').quicksearch('table tbody tr', {
'delay': 100,
'bind': 'keyup keydown',
'show': function() {
if ($('#searcher').val() === '') {
return;
}
$(this).addClass('show');
},
'onAfter': function() {
if ($('#searcher').val() === '') {
return;
}
if ($('.show:first').length > 0){
$('html,body').scrollTop($('.show:first').offset().top);
}
},
'hide': function() {
$(this).removeClass('show');
},
'prepareQuery': function(val) {
return new RegExp(val, "i");
},
'testQuery': function(query, txt, _row) {
return query.test(txt);
}
});
$('#searcher').focus();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Try it out here: http://jsfiddle.net/ZLhAd/369/

Remove all table rows except one with a given class

I have a table rendered dynamically. There's one <tr class="dolly"> somewhere inside its <tbody> that serves as a reference row - it gets cloned and filled with data later. I need to delete all rows except that one.
What I tried:
for loop: uses an increment which quickly gets invalid as the rows are deleted
while loop: continues until all rows are deleted, which never happens because of the condition
Please let me know if you have any ideas. Please no jQuery.

use document.querySelectorAll('tr:not(.dolly)') to select all tr's except with class .dolly and then iterate over it to remove the filtered tr's.
document.querySelectorAll('table tr:not(.dolly)').forEach((tr) => {
tr.remove();
});
<table>
<tr class="dolly">
<td>One</td>
</tr>
<tr>
<td>Two</td>
</tr>
<tr>
<td>Three</td>
</tr>
</table>

I am gonna share my solution here.
function deleteAllOtherRowExceptOne(exceptionIndex) {
const tableBody = document.querySelector('#my-table-tbody')
const tableBodyRowLength = tableBody.rows.length
let deleteIndex = 0
for (let i = 0; i < tableBodyRowLength; i++) {
if(i == exceptionIndex){
deleteIndex++
} else {
tableBody.deleteRow(deleteIndex)
}
}
}

Here is my solution for this question.
// Fetch all rows
const rows = document.querySelectorAll('tr');
// Iterate through the rows and remove those that do not have the desired
class
const className = 'class-name';
rows.forEach(row => {
if (!row.classList.contains(className)) {
row.remove();
}
});
I took refernce from here - https://bbbootstrap.com/code/delete-all-table-rows-except-one-given-class-javascript-61232938

actually i am making a todolist so i want to replace div which i added through in innerhtml with tr and after created of the first row in html

actually i am making a todolist so i want to replace div which i added through in innerhtml with tr and after created of the first row in html please check
Html Part:
<table id="ws-table" class="table table-bordered">
<tr id="insert">
<th>#</th>
<th>Date</th>
<th>Items</th>
<th>Edit / Delete</th>
</tr>
<!-- Here i wanted an tr
</table>
actually i am making a todolist so i want to replace div which i added through in innerhtml with tr and after created of the first row in html please check
javascript part :
var takeInput;
var DATA = [];
load();
function insertItem(){
takeInput = document.getElementById('item').value;
DATA.push(takeInput);
renderJson(DATA);
document.getElementById('item').value = "";
}
function renderJson(data){
document.getElementById('container').innerHTML = "";
for(var i in data){
container.innerHTML = container.innerHTML + "<div id=" + i + " onclick='removeItem(this.id)'><input type='checkbox'/><label>"+data[i]+"</label></div>";
}
save();
}
function removeItem(Id){
var itemId = document.getElementById(Id);
if(itemId.childNodes[0].checked == true){
var arr_ind = DATA.indexOf(itemId.childNodes[1].innerText);
DATA.splice(arr_ind,1);
itemId.parentNode.removeChild(itemId);
save();
}
}
function save(){
localStorage.myList = JSON.stringify(DATA);
}
function load(){
DATA = JSON.parse(localStorage.myList);
renderJson(DATA);
}

Element.innerHTML is for replacement only, so you need to read it first concatenate with new row and then assing back, better use Element.insertAdjacentHTML():
var row = "<tr><td>1</td><td>2</td><td>3</td><td>4</td></tr>";
document.querySelector("#ws-table tbody").insertAdjacentHTML("beforeend", row);
You may want to use thead for your table header. Check this thread for more information.