倒计时切换网页为灰色代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>倒计时</title>
<style>
</style>
</head>
<body>
<div>
<img src="https://jiubx.com/wp-content/uploads/2020/04/2020040304530377.png" alt="">
</div>
<span id="jtime"></span>
</body>
<script>
function j_time() {
var jtime = new Date();
var stoptime= new Date("2020/4/4 16:11:00");//结束时间
var shenyu=(stoptime.getTime()-jtime.getTime())/1000;
var oDay = parseInt(shenyu/(24*60*60));
var oHours = parseInt(shenyu/(60*60));
var oMinutes = parseInt((shenyu/60)%60);
var oSeconds = parseInt(shenyu%60);
// console.log(shenyu,oDay,oHours,oMinutes,oSeconds);
var jspan=document.getElementById("jtime");
jspan.innerText=oDay+'天'+oHours+'小时'+oMinutes+'分钟'+oSeconds+'秒';
if(shenyu<0){
j_html();
clearInterval(b);
jspan.innerText="";
}
}
function j_html() {
var a = document.body.style.filter="grayscale(100%)";
console.log(a);
}
var b=setInterval(j_time,1000);
j_time();
</script>
</html>
倒计时切换网页为正常颜色代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>倒计时</title>
<style>
</style>
</head>
<body>
<div>
<img src="https://jiubx.com/wp-content/uploads/2020/04/2020040304530377.png" alt="">
</div>
<span id="jtime"></span>
</body>
<script>
function j_time() {
var jtime = new Date();
var stoptime= new Date("2020/4/4 16:11:00");//结束时间
var shenyu=(stoptime.getTime()-jtime.getTime())/1000;
var oDay = parseInt(shenyu/(24*60*60));
var oHours = parseInt(shenyu/(60*60));
var oMinutes = parseInt((shenyu/60)%60);
var oSeconds = parseInt(shenyu%60);
// console.log(shenyu,oDay,oHours,oMinutes,oSeconds);
var jspan=document.getElementById("jtime");
jspan.innerText=oDay+'天'+oHours+'小时'+oMinutes+'分钟'+oSeconds+'秒';
if(shenyu<0){
j_html();
clearInterval(b);
jspan.innerText="";
}
}
function j_html() {
var a = document.body.style.filter="grayscale(0%)";
console.log(a);
}
var b=setInterval(j_time,1000);
j_time();
</script>
</html>
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