tryjs_setinterval3 在线代码实例

 <p>页面上显示时钟：</p>
<p id="demo"></p>
<button onclick="myStopFunction()">停止时钟</button>
<script>
var myVar=setInterval(function(){myTimer()},1000);
function myTimer(){
	var d=new Date();
	var t=d.toLocaleTimeString();
	document.getElementById("demo").innerHTML=t;
}
function myStopFunction(){
	clearInterval(myVar);
}
</script>