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39 lines
802 B
39 lines
802 B
5 months ago
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var each = require('./each')
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var includes = require('./includes')
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var isFunction = require('./isFunction')
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var property = require('./property')
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/**
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* 数组去重
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*
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* @param {*} array 数组
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* @param {*} iterate 字段或回调
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* @param {*} context
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* @returns
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*/
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function uniq (array, iterate, context) {
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var result = []
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if (iterate) {
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if (!isFunction(iterate)) {
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iterate = property(iterate)
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}
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var val, valMap = {}
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each(array, function (item, key) {
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val = iterate.call(context, item, key, array)
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if (!valMap[val]) {
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valMap[val] = 1
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result.push(item)
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}
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})
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} else {
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each(array, function (value) {
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if (!includes(result, value)) {
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result.push(value)
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}
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})
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}
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return result
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}
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module.exports = uniq
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