I have a table 2 rows &2 columns. I need to color each and every cell in a table (4 colors) with button click. Change the colors in 4cells dynamically.

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I need some help in solving this task. I have a table 2 rows &2 columns. I need to color each and every cell in a table (4 colors) with button click. Change the colors in 4cells dynamically.

Example:
Suppose if i have 4 cells in a table i want to color each cell frequently change with a different color . like a serial bulbs.

Can you guys please help. Thanks in advance

Posted 15-Apr-15 22:04pm

harsha114

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Praveen Kumar Upadhyay · Answer 1 · 2015-04-15T23:40:00

Hi,
Below is the code I have made for you.

HTML code.

HTML

<div>
        <table width="10%" border="1" cellspacing="0">
            <tr>
                <td id="cell1">1</td>
                <td id="cell2">2</td>
            </tr>
            <tr>
                <td id="cell3">3</td>
                <td id="cell4">4</td>
            </tr>
        </table>
        <br />
        <br />
        <input type="button" value="Change Colour" id="btn" onclick="return ChangeColour();" />
    </div>

Javascript Code

JavaScript

<script type="text/javascript">
        function ChangeColour() {
            var arr = [["000000", "000033"],["000066", "000099"],["0000CC", "0000FF"],["003300", "003333"],["003366", "003399"],
["0033CC", "0033FF"],["006600", "006633"],["006666", "006699"],["0066CC", "0066FF"],["009900", "009933"],["009966", "009999"],
["0099CC", "0099FF"],["00CC00", "00CC33"],["00CC66", "00CC99"],["00CCCC", "00CCFF"],["00FF00", "00FF33"],["00FF66", "00FF99"],
["00FFCC", "00FFFF"],["330000", "330033"],["330066", "330099"],["3300CC", "3300FF"],["333300", "333333"],["333366", "333399"],
["3333CC", "3333FF"],["336600", "336633"],["336666", "336699"],["3366CC", "3366FF"],["339900", "339933"],["339966", "339999"],
["3399CC", "3399FF"],["33CC00", "33CC33"],["33CC66", "33CC99"],["33CCCC", "33CCFF"]];
            arr_length = arr.length;
            first_row = Math.floor(Math.random() * arr_length) - 1;
            second_row = Math.floor(Math.random() * arr_length) - 1;

            document.getElementById("cell1").style.backgroundColor = "#"+arr[first_row][0];
            document.getElementById("cell2").style.backgroundColor = "#" + arr[first_row][1];

            document.getElementById("cell3").style.backgroundColor = "#" + arr[second_row][0];
            document.getElementById("cell4").style.backgroundColor = "#" + arr[second_row][1];


            return true;
        }
    </script>

You can rearrange your color code array to get more colorful background color.