[英]How to remove an element from array of literal objects
您好,我正在嘗試從數組數據中的每個對象中刪除操作屬性:
[{productName: "", ... action: ...,}, {productName: "", ...action:...} ...]
var arr =[{productName: "bbbb", action: 'b'},
{productName: "aa",action: 'a'},
{productName: "tt",action: 't'},
{productName: "vv",action: 'v'}]
arr = arr.map((d) => {delete d.action ; return d;});
1) 使用map(...)
:
your_array.map(o => {'productName': o.productName})
請注意,如果您想過濾掉許多屬性,這會更優雅,但如果您只想刪除一個屬性,則需要做更多的工作。
2) delete
:
for (let i = 0; i < your_array.length; i++){
delete your_array[i].action
}
使用map
遍歷數組並解構對象以僅保留所需字段
var arr = [{ producet: 'xyz', action: 'abc', other: 'o' }, { producet: 'xyz', action: '123', other: 'o' }, { producet: 'xyz', action: 'sdf', other: 'o' }] const result = arr.map(({ action, ...rest }) => rest); console.log(result);
使用數組map
它將返回一個新數組。內部map
回調創建一個新對象並僅填充那些必需的字段。 不要改變原始數組
var arr = [{ productName: "1", action: '' }, { productName: "2", action: '' }]; let newArr = arr.map(function(item) { return Object.assign({}, { productName: item.productName }) }); console.log(newArr)
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