Question

如何更改数组的格式？我的想法是将array2放在array1上，我的意思是方括号和逗号的格式。

即，将“：”改为“，”，将{}改为[]

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Answer 1

这项工作适合你？

var array1=[["Sep",687918],["Nov",290709],["Dic",9282],["Ene",234065]];
var array2 = {};
array1.forEach(function(element){
  array2[element[0]]=element[1];
});

Answer 2

最合适的方法是使用map()方法。使用此方法，您将通过操作原始数组的每个项目来构建新数组。了解详情here。

var array2=[{"Sep":687918},{"Nov":290709},{"Dic":9282},{"Ene":348529}];

var array1 = array2.map(function (item) {
  var key = Object.keys(item)[0];
  var value = item[key];
  return [key, value];
});

console.log(array1);

// returns [["Sep", 687918], ["Nov", 290709], ["Dic", 9282], ["Ene", 348529]]

Answer 3

＆＃34;我的意思是方括号和逗号的格式＆＃34;

方括号表示它是一个数组，数组元素应该用逗号分隔。实际上，您希望将数组数组转换为对象数组。这是简短的ES6解决方案：

＆＃13;

var array1 = [["Sep",687918],["Nov",290709],["Dic",9282],["Ene",234065]];
var newArray = [];

array1.forEach(item => newArray.push({[item[0]]: item[1]}))
console.log(newArray)

＆＃13;

Answer 4

您可以使用数组.reduce方法执行此操作：

＆＃13;

var array1=[["Sep",687918],["Nov",290709],["Dic",9282],["Ene",234065]]

var array2 = array1.reduce((arr2, current) => { 
    arr2.push({[current[0]]: current[1]});
    return arr2
}, []);

console.log(array2)

＆＃13;

更改数组javascript的格式

4 个答案: