simplelife7 · May 20, 2012 08:25
diff --git a/loop-optimization.js b/loop-optimization.js
 // 缓存
 for(var i=0, j = document.getElementsByTagName('a').length; i0; i--){
 }

 // 据说是最快的
 while(i--){
    // maybe fastest
 }
	// 缓存
	for(var i=0, j = document.getElementsByTagName('a').length; i0; i--){
	}

	// 据说是最快的
	while(i--){
	// maybe fastest
	}