没有了setInterval(clock,100);后为什么input也不能显示当前时间
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>定时器</title>
<script type="text/javascript">
var attime;
function clock(){
var time=new Date();
attime=time.getHours()+":"+time.getMinutes()+":"+time.getSeconds();
document.getElementById("clock").value = attime;
}
//setInterval(clock,100);
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" />
</form>
</body>
</html>
慕斯卡7179630浏览 931回答 1
1回答
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__innocence
两个错误：1.js写在文档前面，这样加载js的时候，输入框还没有加载，这样会造成错误2、function clock只有声明，没有调用<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>定时器</title> </head> <body> <form> <input type="text" id="clock" size="50" /> </form> <script type="text/javascript"> var attime; function clock() { var time = new Date(); attime = time.getHours() + ":" + time.getMinutes() + ":" + time.getSeconds(); document.getElementById("clock").value = attime; } clock(); //setInterval(clock,100); </script> </body> </html>
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相关分类
JavaScript