Custom JavaScript examples

[buuuudzik]

Yes, it works! You're the best. Maybe do you have some idea how to change css and interval of this page.

I've tried:

Code:

$(function(){
 var black = 'rgb(0, 0, 0)' // Black
 $('iframe').load(function() {
   // Changing text
   var iframeInnerElement = $('iframe').contents().find('#bloktext').get(0);
   iframeInnerElement.innerHTML = "Erwin van der Zwart";
   
   // Changing interval
   iframeInnerElement.css('animation', przesun 4s linear infinite);
   iframeInnerElement.css('-webkit-animation', przesun 4s linear infinite);
   
   // Changing background color
   var iframeInnerElement = $('iframe').contents().find('#blok').get(0);
   iframeInnerElement.css('background-color', black);

 });
 
 
});

When I've tried run lines for "Changing interval" the console show:
"identifier starts immediately after numeric literal"

When I've tried run lines for "Changing background color" the console show:
"iframeInnerElement.css is not a function"