測定関数実行時間

3798 ワード

互換ブラウザの方法:

  
  
var start =+ new Date();
ww();
//
var stop =+ new Date();
if (stop - start < 100 ){
alert(stop
- start + " " );
}
else {
alert(stop
- start + " " );
}

firebugを使用して印刷する方法:

  
  
var timeName = " timer1 "
console.time(timeName);

for ( var i = 0 ; i < 5000 ; i ++ ){
document.getElementById(
" inner " ).innerHTML += " a " ;
}

console.timeEnd(timeName);