Tutorial JavaScript: Cara membuat senarai menggunakan matriks
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P粉617237727 2023-09-06 09:54:44
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<p><strong>我有一个像这样的数组</strong></p> <pre class="brush:php;toolbar:false;">const input_array= [ ["hitam", "biru"], ["besar", "sederhana"], ["a", "b", "c"] //... adakah ia dinamik boleh ditambah banyak baris ];</pre> <p><strong>我该如何得到一个像这样的数组:</strong></p> <pre class="brush:php;toolbar:false;">const finallist = [ ["hitam", "besar", "a"], ["hitam", "besar", "b"], ["hitam", "besar", "c"], ["hitam", "sederhana", "a"], ["hitam", "sederhana", "b"], ["hitam", "sederhana", "c"], ["biru", "besar", "a"], ["biru", "besar", "b"], ["biru", "besar", "c"], ["biru", "sederhana", "a"], ["biru", "sederhana", "b"], ["biru", "sederhana", "c"], ]</pre> <p><strong>请记住input_array是动态的</strong></p> <p><strong>请告诉我如何做到这一点</strong></p>
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membalas semua(2)
P粉729518806

Anda boleh melakukan sesuatu seperti ini:

const input_array = [
    ["black", "blue"],
    ["large", "medium"],
    ["a", "b", "c"]
]
const getCompinations = array =>
  array.reduce((v, b) =>
    v.reduce((r, g) => [...r, ...b.map(w => [].concat(g, w))], [])
  )
console.log(getCompinations(input_array))
P粉449281068

Sila lihat ini, ia mungkin membantu:

const input_array = [
    ["black", "blue"],
    ["large", "medium"],
    ["a", "b", "c"]
    //... 是否可以动态添加多行
];
const mmc = input_array.reduce((e, r) => e * r.length, 1);
const finallist = input_array.map((x,i)=>({index:i,arr:x})).reduce((e, r) => {
    for (var u = 0; u  e[u].includes(r)) || e[u].length 

Berhati-hati! Boleh menyebabkan ranap penyemak imbas dalam matriks besar.

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