Difference between revisions of "Template:Fudan China/JS/head"
| Line 2: | Line 2: | ||
var sT=document.documentElement.scrollTop; | var sT=document.documentElement.scrollTop; | ||
$ban.css('top',0.4*sT+'px'); | $ban.css('top',0.4*sT+'px'); | ||
| − | $ban.css('opacity',0. | + | $ban.css('opacity',0.4-0.4*sT/200); |
$(document).on('scroll',function () { | $(document).on('scroll',function () { | ||
var sT=document.documentElement.scrollTop; | var sT=document.documentElement.scrollTop; | ||
if(sT<200){ | if(sT<200){ | ||
$ban.css('top',0.4*sT+'px'); | $ban.css('top',0.4*sT+'px'); | ||
| − | $ban.css('opacity',0. | + | $ban.css('opacity',0.4-0.4*sT/200); |
} | } | ||
else { | else { | ||
Revision as of 06:40, 31 October 2017
var $ban=$('#banner'); var sT=document.documentElement.scrollTop; $ban.css('top',0.4*sT+'px'); $ban.css('opacity',0.4-0.4*sT/200); $(document).on('scroll',function () {
var sT=document.documentElement.scrollTop;
if(sT<200){
$ban.css('top',0.4*sT+'px');
$ban.css('opacity',0.4-0.4*sT/200);
}
else {
$ban.css('opacity',0);
}
}); var $logo=$('#logo'); if(sT<200){
$logo.css('top',sT-400+'px');
} else {
$logo.css('top','-200px');
} $(document).on('scroll',function () {
var sT=document.documentElement.scrollTop;
if(sT<200){
$logo.css('top',sT-400+'px');
}
else {
$logo.css('top','-200px');
}
});
