Utils.debounce(interval, handler)

Creates a function that will delay the calling of handler until after x seconds have elapsed since the last time it was invoked. Alias to ——debounce 译：创建一个函数，该函数将延迟调用处理程序的调用，直到X秒自上次调用它之后已经过去了。别名——debounce。

Arguments（参数）

1. interval — A number, representing seconds. 译：一个数字，代表秒。
2. handler— A function. 译：一个函数。

handler = Utils.debounce 0.1, ->
    print "hello"

for i in [1..100]
    handler()

＃ Output: "hello" only once