Tips for locking the table header and left column in place without any border flickering

I have been tackling the task of organizing table data recently. I managed to fix the table header and left column using jQuery, which is working fine. However, I noticed that when I scroll through the table, the borders start flickering. When I set the background color to white, the borders are hidden. How can I prevent the flickering of borders while scrolling through the table? Any assistance would be greatly appreciated. Thank you in advance.

You can view my code on JSfiddle at 

https: //jsfiddle.net/j41acpmx/65/

javascriptjqueryhtmlcss

Answer №1

The issue lies in the relative positioning causing the border to lag behind and flicker. There are two approaches to resolving this dilemma.

One solution involves using CSS to eliminate the table's th border initially and setting a white background for improved visibility.

https://jsfiddle.net/pfysr0be/

Another approach is to adjust the positioning of the fixed th elements by subtracting the border width.

Since your current border is 2px, I deducted 2px from the top property in the CSS at line 115. This adjustment will move the th element up by 2 pixels.

if(settings.head)
            {
                this.find("thead tr > *").css("top", parseInt(top)-2);
                ...
            }

Answer №2

If you want to enhance your CSS, consider making the following adjustments. You can add box inset shadows to `th` to fix a problem where 2 pixels are missing when floating elements.

 #parent {
            height: 300px;
            width: 300px;
        }
 .table{
        border-collapse: collapse;

        }
  td{
     border-top: 2px solid;
     background: white;
     padding: 5px;
    }
  th{
    background: white;
    padding: 5px;
    -webkit-box-shadow: inset 0px 2px 0px 0px rgba(0, 0, 0, 1);
    -moz-box-shadow:    inset 0px 2px 0px 0px rgba(0, 0, 0, 1);
    box-shadow:         inset 0px 2px 0px 0px rgba(0, 0, 0, 1);
  }

Check out the Jsfiddle link for an example: https://jsfiddle.net/af2quek5/

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