标签：minutes array class text body htm log window lin
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>当前系统时间</title> <link rel="stylesheet" href="style.css" /> <script language="javascript" type="text/javascript"> window.onload = function(){ showTime(); }; function checkTime(i){ //补位处理 if(i<10){ i="0"+i; } else{return i;} } function showTime(){ var now=new Date(); var year=now.getFullYear(); var month=now.getMonth(); var day=now.getDate(); var h=now.getHours(); var m=now.getMinutes() ; var s= now.getSeconds() ; m=checkTime(m); s=checkTime(s); var weekday=new Array(7); weekday[0]="星期日"; weekday[1]="星期一"; weekday[2]="星期二"; weekday[3]="星期三"; weekday[4]="星期四"; weekday[5]="星期五"; weekday[6]="星期六"; document.getElementById("show").innerHTML=""+year+"年"+month+"月"+day+"日 "+weekday[now.getDay()]+h+":"+m+":"+s; t=setTimeout(‘showTime()‘,1000); /*t=setTimeout(showTime,1000);也可以,同样效果*/ /*t=setTimeout(showTime(),1000);不行,直接调用了函数的结果(也就是一个固定值),一开始就跑出了结果然后赋值给了t,相当于t=setTimeout(运行程序时的时间,1000)*/ } </script> </head> <body> <div class="content1"> <div id="show">显示时间的位置</div> </div> </body> </html>
js调用函数时括号加与不加的区别,function()&function
标签：minutes array class text body htm log window lin
原文地址：http://www.cnblogs.com/jimmy-smith/p/6104807.html
