我将使用underscore.js或lodash源代码找到该功能的经过良好测试的版本。
这是下划线代码的略微修改版本，用于删除所有对underscore.js的引用：
// Returns a function, that, when invoked, will only be triggered at most once// during a given window of time. Normally, the throttled function will run// as much as it can, without ever going more than once per `wait` duration;// but if you'd like to disable the execution on the leading edge, pass// `{leading: false}`. To disable execution on the trailing edge, ditto.function throttle(func, wait, options) { var context, args, result; var timeout = null; var previous = 0; if (!options) options = {}; var later = function() { previous = options.leading === false ? 0 : Date.now(); timeout = null; result = func.apply(context, args); if (!timeout) context = args = null; }; return function() { var now = Date.now(); if (!previous && options.leading === false) previous = now; var remaining = wait - (now - previous); context = this; args = arguments; if (remaining <= 0 || remaining > wait) { if (timeout) { clearTimeout(timeout); timeout = null; } previous = now; result = func.apply(context, args); if (!timeout) context = args = null; } else if (!timeout && options.trailing !== false) { timeout = setTimeout(later, remaining); } return result; };};请注意，如果您不需要强调支持的所有选项，则可以简化此代码。
编辑1：删除了对下划线的另一个引用，即对Zettam的评论
编辑2：在lollzery wowzery的评论中添加了有关lodash和可能的代码简化的建议
