js删除数组对象中指定元素的对象

Question

    let arr = [
    {
        pk:'1',
        name:'张',
        age:'13'
    },
    {
        pk:'2',
        name:'张',
        age:'23'
    },
    {
        pk:'3',
        name:'张',
        age:'33'
    }
    ]

我想删除数组对象里面这个pk的这个元素，该怎么做

Answer 1

arr.forEach(t => delete t.pk)

Answer 2

//要删除pk这个属性
//尽量不修改原来对象
let arr = [
    {
        pk:'1',
        name:'张',
        age:'13'
    },
    {
        pk:'2',
        name:'张',
        age:'23'
    },
    {
        pk:'3',
        name:'张',
        age:'33'
    }
    ];
let _new_arr_ = arr.map((item)=>{
    return Object.keys(item).reduce((obj,key)=>{
        if(key==='pk') return obj;
        obj[key] = item[key];
        return obj;
    },{});
});

console.log(_new_arr_);

Answer 3

function del(array){
    array.map((item) => {
        delete item.pk
    })
}

del(arr)

Answer 4

arr.map(val=>{
    delete val.pk
})

Answer 5

arr.map((v)=>{let {pk,...newObj} = v; return newObj;})