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24 lines
578 B
24 lines
578 B
var slice = require('./slice')
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/**
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* 创建一个函数, 调用次数不超过 count 次之前执行回调并将所有结果记住后返回
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*
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* @param {Number} count 调用次数
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* @param {Function} callback 完成回调
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* @return {Object}
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*/
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function before (count, callback, context) {
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var runCount = 0
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var rests = []
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context = context || this
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return function () {
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var args = arguments
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runCount++
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if (runCount < count) {
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rests.push(args[0])
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callback.apply(context, [rests].concat(slice(args)))
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}
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}
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}
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module.exports = before
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