An introduction to the differences between interval and settimeout in JavaScript

  This article mainly introduces the difference between interval and settimeout in JavaScript, and need friends can refer to the following

SetTimeout (code,millisec)//-execute code after a specified time     code must;    MILLISEC must;    cleartimeout ( Settimeoutid)//-Cancel settimeout ()     setinterval (CODE,MILLISEC);//Specify Loop execution code in interval milliseconds     code must be;  & nbsp Millisec must be;    clearinterval (intervalid);    with settimeout (CODE,MILLISEC) to achieve setinterval effect, Only nested call methods are required;    below is a countdown page   code as follows: <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">  <html xmlns=" http://www.w3.org/1999/xhtml ">  <head>  <meta http-equiv=" Content-type "content=" text/html; charset=gb2312 "/>  <title> Untitled document </title>  <script type=" Text/javascript ">  var c =6;  var t;  function timedcount ()   {  var time = document.getElementById (' txt ') .value;  if (Tim e>0) {  document.getElementById (' txt ') .value=c;  c=c-1;  t=settimeout ("TimedCount ()", 1; }  else{  cleartimeout (t); }   }  </script>  </head>   <body>  <form>  <input type= "button" value= "Start the timer! "Onclick=" Timedcount () ">  <input type=" text "id=" TXT "value=" 6 ">  </form>  </body >  </html>