javascript - Stop countdown when it reaches to "0" -


i want stop counter when reaches 0, can me?

function countdown() {     var = document.getelementbyid('counter');     if (parseint(i.innerhtml)<=0) {     }     i.innerhtml = parseint(i.innerhtml)-1; } setinterval(function(){ countdown(); },1000); 

<html > <head>   <meta http-equiv="content-type" content="text/html; charset=utf-8" /> </head> <body> <div id="counter">5</div>  <script type="text/javascript"> function countdown() {     var = document.getelementbyid('counter');     i.innerhtml = parseint(i.innerhtml)-1;     if (parseint(i.innerhtml)==0) {        clearinterval(timerid);     } } var timerid = setinterval(function(){ countdown(); },1000); </script> </body> </html>

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