[英]How to replace image based on the hour of the day
我有一个代码,可以根据一天中的时间(每小时)更改背景颜色。 现在,我尝试执行相同的操作来替换图像源,但似乎无法正常工作,代码也基于计算机时区,但是我想仅基于西班牙巴塞罗那市创建它。
JAVASCRIPT
$(document).ready(function(){
var d = new Date();
var n = d.getHours();
//1-2am
if (n > 23 || n < 2) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#2e3348','color':'#FFF'});
}
//2-3am
else if (n > 24 || n < 3) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//3-4am
else if (n > 1 || n < 4) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//4-5am
else if (n > 2 || n < 5) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//5-6am
else if (n > 3 || n < 6) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//6-7am
else if (n > 4 || n < 7) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//7-8am
else if (n > 5 || n < 8) {
$("img#photo1").attr("src","images/head6.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//8-9am
else if (n > 6 || n < 9) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//9-10am
else if (n > 7 || n < 10) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//10-11am
else if (n > 8 || n < 11) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//11-12am
else if (n > 9 || n < 12) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//12-1pm
else if (n > 10 || n < 13) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//1-2pm
else if (n > 11 || n < 14) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//2-3pm
else if (n > 12 || n < 15) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//3-4pm
else if (n > 13 || n < 16) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//4-5pm
else if (n > 14 || n < 17) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//5-6pm
else if (n > 15 || n < 18) {
$("img#photo1").attr("src","images/head4.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//6-7pm
else if (n > 16 || n < 19) {
$("img#photo1").attr("src","images/head.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//7-8pm
else if (n > 17 || n < 20) {
$("img#photo1").attr("src","images/head1.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//8-9pm
else if (n > 18 || n < 21) {
$("img#photo1").attr("src","images/head1.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//9-10pm
else if (n > 19 || n < 22) {
$("img#photo1").attr("src","images/head1.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//10-11pm
else if (n > 20 || n < 23) {
$("img#photo1").attr("src","images/head1.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
//11-12pm
else {
$("img#photo1").attr("src","images/head1.png");
$('body').css({'background-color':'#5ca0d6','color':'#FFF'});
}
});
我的HTML是
<img src="" id="photo1" />
有什么建议可以更好地理解它并使它起作用吗? 提前致谢!
将.attr更改为.prop:
$("img#photo1").prop("src","images/head6.png");
另一个选择是在CSS类中定义背景图像,然后仅切换类。
这是一个非常有创意的想法,可以根据时间更改背景。 但是,您是否将所有src
属性都设置为同一张图片?
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