html文件:<p id="clock"></p><input type="button" value="dianji" onclick="count()">js文件:function count(){ var time=new Date(); var attime= time.getHours()+"."+time.getMinutes()+"."+time.getSeconds() ; document.getElementById("clock").innerHTML=attime;}var attime = setInterval(count(),100);
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stone310
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<body>
<p id="clock"></p>
<input type="button" value="dianji" onclick="a()">
<script >
function count(){
var time=new Date();
var attime= time.getHours()+"."+time.getMinutes()+"."+time.getSeconds() ;
document.getElementById("clock").innerHTML=attime;
}
function a(){
setInterval(count,100);
}
</script>
</body>或者
<body>
<p id="clock"></p>
<input type="button" value="dianji" onclick="count()">
<script >
function count(){
var time=new Date();
var attime= time.getHours()+"."+time.getMinutes()+"."+time.getSeconds() ;
document.getElementById("clock").innerHTML=attime;
setTimeout(count,100)
}
</script>
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