Return the JS Code of the color of the cyclic gradient with an incremental number.

The function is as follows: CopyCodeThe Code is as follows: function GCL (I ){
VaR F = parseint (I % 15)/5 );
I = I % 15% 5;
Switch (f ){
Case 0: Return "#" + CS2 (255-i * 51) + CS2 (I * 51) + "00 ";
Case 1: Return "#00" + CS2 (255-i * 51) + CS2 (I * 51 );
Case 2: Return "#" + CS2 (I * 51) + "00" + CS2 (255-i * 51 );
}
}
Function CS2 (I ){
VaR S = I. tostring (16 );
Return ("00" + S). substr (S. Length );
}

You can use GCL to return the gradient color from red to green to blue. Gradient effect:

For example, in the following application, you can use this function to gradient the background color of the hyperlink:Home page <br/>
[Ctrl + A select all Note: If you need to introduce external JS, You need to refresh it to execute]

This function can also produce more detailed color changes. If you are interested, try it.