js写了一个关于时间的定时器setinterval

来源:互联网 发布:多益网络2018校招 编辑:程序博客网 时间:2024/05/16 09:56
<!DOCTYPE html><html><head><meta charset="UTF-8"><title>setiner</title></head><body><div id="are"><span id="timeare"></span><br><input type="button" id="btn1" value="start" onclick="start(this.id)" /><input type="button" id="btn1" value="stop" onclick="stop(this.id)" /></div><script type="text/javascript">var timer;timer=setInterval("dat()",500);function dat(){var date = new Date();var time=date.getMinutes() + ':' + date.getSeconds() + ':' + date.getMilliseconds();            document.getElementById("timeare").innerHTML=time;}function start(){timer =setInterval("dat()",1000);}function stop(){clearInterval(timer);}var num = 0;        var i = setInterval(function() {            num++;            if (num > 10)                clearInterval(i);        }, 1000);</script></body></html>

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