I have table where I want to select entire row (change background color). Rows are selected by a checkbox and when a next row is selected, the previous row has to deselect.
This is my table
<table id="table" border="1">
<tr>
<th></th>
<th>ID</th>
<th>Name</th>
<th>Surname</th>
</tr>
<tr>
<td class='row'>
<input type='checkbox' class='check' onclick='markRow(0)'>
</td>
<td class='row'>-</td>
<td class='row'>-</td>
<td class='row'>-</td>
</tr>
<tr>
<td class='row'>
<input type='checkbox' class='check' onclick='markRow(1)'>
</td>
<td class='row'>-</td>
<td class='row'>-</td>
<td class='row'>-</td>
</tr>
<tr>
<td class='row'>
<input type='checkbox' class='check' onclick='markRow(2)'>
</td>
<td class='row'>-</td>
<td class='row'>-</td>
<td class='row'>-</td>
</tr>
</table>
#table{
border-collapse: collapse;
}
I named every table cell with class="row". Calculating an interval in which a specific row is positioned and using the for loop, I should be able to set background color to those table cells. Intervals are: for the first row its 0-3, second 4-7 and third 8-11.
I tried this:
var clear1 = 0;
var clear2 = 0;
//these two should clear the previous row
var counter = 0;
//this will ensure that clearing doesn't happen the first time
//function parameter is given by this checkbox from table
//<input type='checkbox' class='check'onclick='markRow(0)'>
function markRow(rowNumber){
var row = document.getElementsByClassName('row');
var checkboxes = document.getElementsByClassName('check');
var interval = rowNumber*4;
for(var i=interval;i<=interval+3;i++){
row[i].style = "background-color: dodgerblue;";
}
//for example if function gets parameter rowNumber=2, then it will color the cells in interval 8-11
counter++;
if(counter>1){
for(var i=clear1;i<=clear2;i++){
row[i].style = "";
}
checkboxes[clear1].checked = false;
}
clear1 = interval;
clear2 = interval+3;
//these two will save the interval from the current row and next time, for loop will delete style
//using this interval
}
It works for the first row, but second row and third row sometimes don't check off and don't get deselected. I don't know what could be a problem.
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