How to remove key+value pair from an object of Array

This question already has an answer here:

How do I remove a property from a JavaScript object? 33 answers

---

你可以使用forEach 。

 let result=[
    {
       'id':'1',
       'b':'asd'
    },
    {
       'id':'2',
       'b':'asd'
    },
    { 
       'id':'2000',
       'b':'asd'
    },
 ];
result.forEach(function(item){ delete item.b });
console.log(result);

---

if that one is the only structure you have you can do this

result = result.map(e => ({ id: e.id }))

or if the structure is far more complicated, you might want to use delete :

result.forEach((e) => {
    delete e.b;
});

---

尝试下面的代码：

let result=[
    {
       'id':'1',
       'b':'asd'
    },
    {
       'id':'2',
       'b':'asd'
    },
    { 
       'id':'2000',
       'b':'asd'
    }
 ];
 
 for(let i in result){
    let obj = result[i];
    delete obj['b'];
 }
 console.log(result);

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