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                        /JavaScript進階篇

js動態切換背景圖片會閃爍

setTimeout(function?()?{??
???
???document.body.style?=?'background-image:?linear-gradient(to?bottom,?rgba(0,0,0,0.5),?rgba(0,0,0,0.5)),?url("resource/images/dms3/u1.jpg")';?

?},?2500);??

setTimeout(function?()?{
???document.body.style?=?'background-image:?linear-gradient(to?bottom,?rgba(0,0,0,0.4),?rgba(0,0,0,0.4)),?url("resource/images/dms3/u1.jpg")';
?},?3500);????

?setTimeout(function?()?{
???document.body.style?=?'background-image:?linear-gradient(to?bottom,?rgba(0,0,0,0.3),?rgba(0,0,0,0.3)),?url("resource/images/dms3/u1.jpg")';
?},?4500);