jQuery color gradient animation

Color gradient animation

fadeIn(spend,[callback]): Change in opacity to achieve the fade-in effect (display) of all matching elements

fadeOut(spend,[callback]) :Achieve the fade-out effect (hidden) of all matches through changes in opacity

fadeTo(spend,opacity,[callback]):Adjust the transparency of all matching elements to the specified opacity in a progressive manner

fadeToggle(spend,[callback]): Switch the fade-in and fade-out effects of all matching elements through changes in opacity

Color gradient animation effect

Set the specified transparency

        
  
this is one div
 
this is two div