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如何在 JavaScript 中刪除空白數組

JavaScript

慕容708150 2023-11-02 17:15:21

我是 JavaScript 新手。初始數據：["Argentina", "Maroon 5:50 "]["Australia", "Maroon 5:224 "]["Austria", "Maroon 5:42 "]["Belgium", "Maroon 5:10 "][""]["Brazil", "Maroon 5:187 "][""]["Canada", "Maroon 5:160 "][""]["China", "Maroon 5:10 "][""][""][""][""][""][""][""][""]["France", "Maroon 5:1533 "]我的代碼： $.each(resp.result.artists_detail, function(index, item) { var arr = []; var pop_val = []; var artistdetails=""; for (var i = 0; i < resp.result.artists.length; i++) { arr.push(item[0].country_name); if(item[i].play_count != 0){ artistdetails +=item[i].artist_name +':'+ item[i].play_count+' '; }else{ arr.pop(artistdetails); } } arr.push(artistdetails); arrOfChart.push(arr);});我需要這個結果：["Argentina", "Maroon 5:50 "]["Australia", "Maroon 5:224 "]["Austria", "Maroon 5:42 "]["Belgium", "Maroon 5:10 "]["Brazil", "Maroon 5:187 "]["Canada", "Maroon 5:160 "]["China", "Maroon 5:10 "]["France", "Maroon 5:1533 "]如何刪除空白數組？我正在嘗試為數組推送添加數組并為數組彈出刪除數組，但我需要一個沒有空白數組的數組。

查看完整描述

4 回答

慕仙森

TA貢獻1827條經驗獲得超8個贊

最后做：

arrOfChart = arrOfChart.filter(arr=>!(arr.length == 1 && arr[0] == ""))

console.log(arrOfChart)

>>>[

["Argentina", "Maroon 5:50 "],

["Australia", "Maroon 5:224 "],

["Austria", "Maroon 5:42 "],

["Belgium", "Maroon 5:10 "],

["Brazil", "Maroon 5:187 "],

["Canada", "Maroon 5:160 "],

["China", "Maroon 5:10 "],

["France", "Maroon 5:1533 "]

]

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慕蓋茨4494581

TA貢獻1850條經驗獲得超11個贊

要從數組中刪除空值，您需要使用filter函數：

var array = [0, 1, null, 2, "", 3, undefined, 3,,,,,, 4,, 4,, 5,, 6,,,,];

var filtered = array.filter(function (el) {

return el != "";

});

console.log(filtered);

反對回復 2023-11-02

皈依舞

TA貢獻1851條經驗獲得超3個贊

你只需使用filter

let data = [["Argentina", "Maroon 5:50 "],

["Australia", "Maroon 5:224 "],

["Austria", "Maroon 5:42 "],

["Belgium", "Maroon 5:10 "],

[""],

["Brazil", "Maroon 5:187 "],

[""],

["Canada", "Maroon 5:160 "],

[""],

["China", "Maroon 5:10 "],

[""],

["France", "Maroon 5:1533 "]]

let result = data.filter(([el]) => el);

console.log(result);

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胡子哥哥

TA貢獻1825條經驗獲得超6個贊

通過使用( to ).filter的隱式強制，您可以實現這一點""false

baseArray.filter( subArray => subArray[0]);

const baseArray = [["Argentina", "Maroon 5:50 "],

["Australia", "Maroon 5:224 "],

["Austria", "Maroon 5:42 "],

["Belgium", "Maroon 5:10 "],

[""],

["Brazil", "Maroon 5:187 "],

[""],

["Canada", "Maroon 5:160 "],

[""],

["China", "Maroon 5:10 "],

[""],

["France", "Maroon 5:1533 "]

];

const result = baseArray.filter( subArray => subArray[0]);

console.log(result);

反對回復 2023-11-02

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如何在 JavaScript 中刪除空白數組

如何在 JavaScript 中刪除空白數組

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