動態構建2D數組Javascript

Question

我想動態地建立一個二維數組，但是遇到了麻煩。

答案和投票（單個字符串數組）的長度將始終相同；

我需要這樣的數組：

var data = 
        [['Answer', 'Votes'],
        [answers[0],  parseInt(votes[0])],
        [answers[1],  parseInt(votes[1])],
        [answers[2],  parseInt(votes[2])],
          ....
        ];

這行不通；

var data[];
var arrayLength = answers.length;
for (var i = 0; i < arrayLength; i++) {
    data += [answers[i], votes[i]]; //**Maybe the only line that needs tweaking?
}

Answer 1

嘗試這個：

var data = [];

data[0] = ['answers','votes']

var arrayLength = answers.length;
for (var i = 0; i < arrayLength; i++) {
    data[i+1]= [answers[i], parseInt(votes[i])]; 
}

//check
console.table(data)

Answer 2

var data = [];
var arrayLength = answers.length;
data[0] = ['Answer', 'Votes'];
for (var i = 1; i < arrayLength; i++) {
    data.push([answers[i], votes[i]]); /*It's not += but .push()*/
}

Answer 3

嘗試這個：

var data = [];
var arrayLength = answers.length;
for (var i = 0; i < arrayLength; i++) {
    data.push([answers[i], votes[i]]);
}

Answer 4

由於您是寫answers [i]和votes[i] ，所以看來您的答案和票是在兩個不同的數組中。 那么為什么需要循環。

假設答案和投票為：

var answers = ["A", "B", "C", "D", "E", "F"];
var votes = ["1", "2", "3", "4", "5", "6"];

建立新陣列

var data = ["Answers", "Votes"];

data.Answers=answers;
data.Votes=votes;

console.log(data);