setInterval()在Firefox上不起作用 [英] setInterval() not working on firefox
问题描述
我是Java脚本的新手，由于某种原因，当我在 firefox 上运行此代码时， setInterval 似乎不起作用.香港专业教育学院试图在 Microsoft 边缘上运行它，但仍然无法正常工作.它只打印一次日期，但不会从那里继续.任何帮助将不胜感激.
Hi i'm quite new to java script and for some reason setInterval does not seem to work when i run this code on firefox. Ive tried running it on Microsoft edge but it still does not work. It just prints out the date once but does not continue from there. Any help would be appreciated.
谢谢！
<html>
<head>
</head>
<body>
<script type = "text/javascript">
<!--Intervals with Date/time-->
function printTime(){
var now = new Date();
var hours = now.getHours();
var mins = now.getMinutes();
var seconds = now.getSeconds();
document.write(hours+":"+mins+":"+seconds+"<br \>");
}
setInterval("printTime()", 1000);//in ms
</script>
</body>
</html>
推荐答案
document.write(是1990年的代码-完全不要使用它... setInterval(printTime，1000)
document.write( is 1990's code - don't use it at all ... also setInterval("printTime()", 1000) in code less than 30 years old is written setInterval(printTime, 1000)
function printTime(){
var now = new Date();
var hours = now.getHours();
var mins = now.getMinutes();
var seconds = now.getSeconds();
document.body.innerHTML += (hours+":"+mins+":"+seconds+"<br \>");
}
setInterval(printTime, 1000);//in ms注意:当document.write写入文档流时，在关闭的(已加载)文档上调用document.write将自动调用document.open，这将清除文档.
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