Interruption of JavaScript functions execution -


i have html page javascript:

<!doctype html>      <html>          <head>             <script>                 function dowork() {                      console.log("\tdowork-start");                      var = new date();                      var end = now.gettime() + 2000;                      while(now < end) {                         = new date();                      }                      console.log("\tdowork-end");                 }                  function handleonclick() {                     console.log("onclick-start");                     console.log("onclick-end");                 }                  function handleonchange() {                     console.log("onchange-start");                     window.open('', 'name', 'height=300,width=600,top=200,left=200');                     dowork();                     console.log("onchange-end");                 }             </script>         </head>          <body>             <form>                 <input type="text" onchange="handleonchange();">                 <input type="button" value="ok" onclick="handleonclick();">             </form>          </body>      </html>

use case: enter value in input control , click button. expect such logs in console:

onchange-start     dowork-start     dowork-end onchange-end onclick-start onclick-end

but in firefox i've got:

onchange-start onclick-start onclick-end     dowork-start     dowork-end onchange-end

notice, onclick execution interrupts onchange execution. function dowork emulates long work. in chrome works expected.

can explain how possible?


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