31 lines
1.1 KiB
JavaScript
31 lines
1.1 KiB
JavaScript
// 头部滚动
|
|
(function(){
|
|
let $header = document.querySelector('.header');
|
|
document.addEventListener('scroll',function(){
|
|
let scrollTop = document.documentElement.scrollTop;
|
|
let ratio = Math.min(scrollTop/1000,1);
|
|
$header.style.background = 'rgba(255,255,255,'+(ratio*0.8)+')';
|
|
$header.style.boxShadow = '1px 1px 6px rgba(0,0,0,'+(ratio*0.1)+')';
|
|
});
|
|
})();
|
|
|
|
// 底部滚动
|
|
(function(){
|
|
let timer = null;
|
|
let $gotop = document.querySelector('.mod-fixedbar .gotop');
|
|
$gotop.addEventListener('click',function(){
|
|
cancelAnimationFrame(timer);
|
|
let scrollTop = document.body.scrollTop || document.documentElement.scrollTop;
|
|
let move = scrollTop/18;
|
|
timer = requestAnimationFrame(function fn(){
|
|
var oTop = document.body.scrollTop || document.documentElement.scrollTop;
|
|
if(oTop > 0){
|
|
document.body.scrollTop = document.documentElement.scrollTop = oTop - move;
|
|
timer = requestAnimationFrame(fn);
|
|
}else{
|
|
cancelAnimationFrame(timer);
|
|
}
|
|
});
|
|
});
|
|
})();
|