Subsequent validation of lookup values from first column in html table using JS?
This is my follow-up question of this ... See here. I have a jscript (courtesy hex494D49) looking for values from the first column.
All I need is when the values are searched by the user, the table headers will also be displayed and if the values are not stored. The message "No results" will be displayed there. How to do it?
Here's the JScript:
document.getElementById('term').onkeyup = function(){
var term = this.value;
var column = 0;
var pattern = new RegExp(term, 'g');
var table = document.getElementById('dataTable');
var tr = table.getElementsByTagName('TR');
for(var i = 0; i < tr.length; i++){
var td = tr[i].getElementsByTagName('TD');
for(var j = 0; j < td.length; j++){
if(j == column && td[j].innerHTML == term){
console.log('Found it: ' + td[j].innerHTML);
tr[i].style.display = 'block';
return;
alert('Found it: ' + td[j].innerHTML);
}else{
tr[i].style.display = 'none';
}
}
}
};
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This will be the markup table
. As you can see, I added thead
, tbody
and tfoot
groups
<!-- search box -->
<input type="text" name="term" id="term" autocomplete = "off" />
<!-- table results -->
<table id="dataTable">
<thead>
<tr>
<th>Example No.</th>
<th>Column 1</th>
<th>Column 2</th>
</tr>
</thead>
<tfoot>
<tr>
<th colspan="3"></th>
</tr>
</tfoot>
<tbody>
<tbody>
<tr>
<td>345678917</td>
<td>Test 1</td>
<td>one_test1@gmail.com</td>
</tr>
<tr>
<td>3512376894</td>
<td>Test 2</td>
<td>two.test2@hotmail.com</td>
</tr>
</tbody>
</table>
The default CSS for the markup above. The next step is to combine the following with the rest of your CSS.
table thead {
display: table-row-group;
}
table tbody {
display: table-row-group;
}
table tbody tr {
display: none;
}
Finally, a JavaScript snippet using the getElementsByTagName () method
// JavaScript
document.getElementById('term').onkeyup = function(){
var term = this.value;
var column = 0;
var msg = 'No results found!';
var pattern = new RegExp(term, 'g');
var table = document.getElementById('dataTable');
var tr = table.getElementsByTagName('TR');
for(var i = 0; i < tr.length; i++){
var td = tr[i].getElementsByTagName('TD');
for(var j = 0; j < td.length; j++){
if(j == column && td[j].innerHTML == term){
tr[i].style.display = 'table-row';
table.tFoot.innerHTML = '';
return;
}else{
tr[i].style.display = 'none';
table.tFoot.innerHTML = msg;
}
}
}
};
JsFiddle Working | Version without tfoot
jsFiddle
Same as above, but using strings [] and cells [] collection
Html
<!-- Search box -->
<input type="text" id="search" autocomplete = "off" />
<!-- Table -->
<table id="table">
<thead>
<tr>
<th>Product</th>
<th>Manufacturer</th>
<th>Price</th>
<th>InStock</th>
</tr>
</thead>
<tbody>
<tr>
<td>MacBook Air</td>
<td>Apple</td>
<td>$456</td>
<td>85</td>
</tr>
<tr>
<td>Arc GIS</td>
<td>ESRI</td>
<td>$4556</td>
<td>15</td>
</tr>
<tr>
<td>3ds MAX</td>
<td>Aurodesk</td>
<td>$6556</td>
<td>359</td>
</tr>
<tr>
<td>Windows 7</td>
<td>Micorsoft</td>
<td>$256</td>
<td>2567</td>
</tr>
</tbody>
</table>
<!-- Message -->
<div id="message"></div>
CSS
table thead {
display: table-row-group;
}
table tbody tr {
display: none;
}
JavaScript
document.getElementById('search').onkeyup = function(){
var table = document.getElementById('table'),
tr = table.rows, td,
term = this.value.toLowerCase(), column = 0, i, j,
message = document.getElementById('message');
for(i = 1; i < tr.length; i++){
td = tr[i].cells;
for(j = 0; j < td.length; j++){
if(j == column && td[j].innerHTML.toLowerCase() == term){
tr[i].style.display = 'table-row';
message.innerHTML = '';
return;
}else{
tr[i].style.display = 'none';
message.innerHTML = 'No results found!';
}
}
}
};
JsFiddle working If you won't use thead
it tbody
in your table too , this is another version of jsFiddle
In case you want to find all columns, just change this line
if(j == column && td[j].innerHTML.toLowerCase() == term){
to that
if(td[j].innerHTML.toLowerCase() == term){
Finally, if you want more flexible search, try the version below
document.getElementById('search').onkeyup = function(){
var table = document.getElementById('table'),
tr = table.rows, td,
term = this.value.toLowerCase().trim(), column = 0, i, j,
message = document.getElementById('message'),
pattern = new RegExp(term, 'gi');
for(i = 1; i < tr.length; i++){
td = tr[i].cells;
for(j = 0; j < td.length; j++){
if(j == column && term.length > 0 && td[j].innerHTML.match(pattern)){
tr[i].style.display = 'table-row';
message.innerHTML = '';
return;
}else{
tr[i].style.display = 'none';
message.innerHTML = 'No results found!';
}
}
}
};
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