根据键从数组中删除项目

Question

我有 MAinArrayMainArray=[{{First Name: "First Name"},{Last Name: "Contact"},{Last Name: "Contact"}]我想从这个数组中删除键值对，例如if (key == 'First Name'){delete MainArray[key] /// this doesnt work}最终结果必须是ResultArray=[{    {Last Name: "Contact"},    {Last Name: "Contact"}    ]

Answer 1

您可以使用当前对象的filter内部和内部，Object.keys并检查它是否包含给定的过滤器：

var MainArray=[ {'First Name': "First Name"}, {'Last Name': "Contact"}, {'Last Name': "Contact"} ];

var result = MainArray.filter(item=>!Object.keys(item).includes('First Name'));

var result2 = MainArray.filter(item=>!item['First Name']);

console.log(result);

console.log(result2);

Answer 2

filter()方法也可用于根据给定条件删除项目，请参见以下示例：

let data=[

{"First Name": "First Name"},

{"First Name": "First Name"},

{"Last Name": "Contact"},

{"Last Name": "Contact"}

]

const keyToRemove = "First Name"; //Key to remove

data = data.filter(x => !x[keyToRemove]);

console.log(data);