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<title>每天一个JavaScript实例-使用缓存计算（memoization）来提高应用程序性能</title>
<script>
window.onload = function(){
var fibonacci = function(){
var memo = [0,1];
var fib = function(n){
var result = memo[n];
if(typeof result != "number"){
result = fib(n-1) + fib(n-2);
memo[n] = result;
}
console.log("memo"+memo);
return result;
};
return fib;
}();
var fib =function(n){
return n<2?n:fib(n-1)+fib(n-2);
};
console.time("non-memo");
for(var i = 0; i<=10;i++){
console.log(i+ " " + fib(i));
}
console.timeEnd("non-memo");
console.time("memo");
for(var i = 0; i<=10;i++){
console.log(i+ " " + fibonacci(i) );
}
console.timeEnd("memo");
}
</script>
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