我有一个简单的脚本，应该向您显示当前日期，并根据该日期留下消息。我试图获取它，以便我可以显示它，但也表明因为下个月即将到来，比如说 25 日及之后，它会说下个月即将到来。我也不确定如何使用 setinterval() 使时间看起来像在计数。
到目前为止，这就是我所拥有的:
var message1 = "Have a nice week!";
var message2 = "The weekend is almost here!";
var message3 = "Enjoy the weekend !";
var dateText = "";
function output() {
var today = new Date();
var dd = today.getDate();
dayValue = today.getDay();
var mm = today.getMonth() + 1; //January is 0!
var yyyy = today.getFullYear();
if (dd < 10) {
dd = '0' + dd
}
if (mm < 10) {
mm = '0' + mm
}
todaysDate = (mm + "/" + dd + "/" + yyyy);
if (dayValue == 0) {
dateText += "Sunday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message3);
}
if (dayValue == 1) {
dateText += "Monday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message1);
}
if (dayValue == 2) {
dateText += "Tuesday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message1);
}
if (dayValue == 3) {
dateText += "Wednesday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message1);
}
if (dayValue == 4) {
dateText += "Thursday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message2);
}
if (dayValue == 5) {
dateText += "Friday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message2);
}
if (dayValue == 6) {
dateText += "Saturday";
document.write("Today is: " + dateText + " " + todaysDate + " " + message3);
}
}<body onLoad="output()" ;></body>谢谢。
最佳答案
您可以使用 setInterval 定期调用输出函数，然后调用该函数 onload。
在随附的代码片段中查找解决方案。
var message1 = "Have a nice week!";
var message2 = "The weekend is almost here!";
var message3 = "Enjoy the weekend !";
function setOutput(){
setInterval(output, 3000);
}
function output() {
var today = new Date();
var dd = today.getDate();
var dayValue = today.getDay();
var mm = today.getMonth() + 1; //January is 0!
var yyyy = today.getFullYear();
var hh= today.getHours();
var MM= today.getMinutes();
var ss= today.getSeconds();
var dateText = "";
if (dd < 10) {
dd = '0' + dd
}
if (mm < 10) {
mm = '0' + mm
}
var todaysDate = (mm + "/" + dd + "/" + yyyy + " "+hh+":"+MM+":"+ss);
var titleElement = document.getElementById("title");
if (dayValue == 0) {
dateText += "Sunday";
titleElement.innerHTML = "Today is: " + dateText + " " + todaysDate + " " + message3;
}
if (dayValue == 1) {
dateText += "Monday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message1;
}
if (dayValue == 2) {
dateText += "Tuesday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message1;
}
if (dayValue == 3) {
dateText += "Wednesday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message1;
}
if (dayValue == 4) {
dateText += "Thursday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message2;
}
if (dayValue == 5) {
dateText += "Friday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message2;
}
if (dayValue == 6) {
dateText += "Saturday";
titleElement.innerHTML ="Today is: " + dateText + " " + todaysDate + " " + message3;
}
}<body onLoad="setOutput()" ;>
<div id="title"></div>
</body>关于javascript - 通过 Javascript 添加迄今为止的小时、分钟和秒，然后显示在标题上，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49249381/