//es6语法

export function debounce(func, delay) {let timer//返回一个函数，并拿到参数return function (...args) {if (timer) {clearTimeout(timer)}timer = setTimeout(() => {func.apply(this, args)}, delay)}
}

//简单实现

var debounce = function(idle, action){var lastreturn function(){var ctx = this, args = argumentsclearTimeout(last)last = setTimeout(function(){action.apply(ctx, args)}, idle)}
}