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js计算时分秒代码
<script>
function b(n){
 return n>=10 ? n :  "0"+n;
}
function getNow(){
 var d=new Date();
 var s = d.getFullYear() + "-" +b((d.getMonth()+1)) + "-" + b(d.getDate()) + " " + b(d.getHours()) + ":" + b(d.getMinutes()) + ":" + b(d.getSeconds());
 return s;
}
alert(getNow());
</script>

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