[問題] 為什麼node比chrome快?
{
console.time("loop");
for (var i = 0; i < 1000000; i += 1){
// Do nothing
}
console.timeEnd("loop");
}
在網路上看到 ( https://www.toptal.com/nodejs/interview-questions )
說上面這段code
node的執行速度會比chrome瀏覽器快
雖然都是用v8引擎
原因是
因為i是global,會被綁在window object上
然後會
repeatedly resolving the property i within the heavily populated
window namespace in each iteration of the for loop.
上面這句英文理解不能
可以請大大開釋一下嗎?
感謝
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