商品sku的排列组合
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<head>
<meta charset="UTF-8">
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<title>商品sku</title>
</head>
<body>
<script>
const names = ['iphoneX', 'iphoneXs'];
const colors = ['黑色', '白色'];
const sizes = ['64G', '128G'];
// const res = [
// ['iphoneX', '黑色', '64G'],
// ['iphoneX', '黑色', '128G'],
// ['iphoneX', '白色', '64G'],
// ['iphoneX', '白色', '128G'],
// ['iphoneXs', '黑色', '64G'],
// ['iphoneXs', '黑色', '128G'],
// ['iphoneXs', '白色', '64G'],
// ['iphoneXs', '白色', '128G']
// ]
const all = [names, colors, sizes]
let combine = function (all) {
if (all.length < 2) {
return all[0] || []
}
return all.reduce((pre, cur) => {
let res = []
pre.forEach(p => {
cur.forEach(c => {
let t = [].concat(Array.isArray(p) ? p : [p])
t.push(c)
res.push(t)
});
});
return res
})
}
// let combine = function (all) {
// let res = []
// let fn = function (itemIndex, prev) {
// let item = all[itemIndex]
// let isLast = itemIndex === all.length - 1
// for (const val of item) {
// let cur = prev.concat(val)
// if (isLast) {
// res.push(cur)
// } else {
// fn(itemIndex + 1, cur)
// }
// }
// }
// fn(0, [])
// return res
// }
console.log(combine(all));
</script>
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