如何对数组中相同key统一赋值？-灵析社区
biubiuuuuu有以下两个数组， 其中'name'后缀的数字由arr决定。arr数组有多长，array里的name就有多少个 let arr=[0,1,2,3]; let array=[ { name0:'1', name1:'', name2:'', name3:'', }, { name0:'', name1:'', name2:'2', name3:'', }, { name0:'', name1:'6', name2:'', name3:'', }, { name0:'', name1:'', name2:'', name3:'9', }, ] 如何使得数组中相同key的value一样，效果如下 array=[ { name0:'1', name1:'6', name2:'2', name3:'9', }, { name0:'1', name1:'6', name2:'2', name3:'9', }, { name0:'1', name1:'6', name2:'2', name3:'9', }, { name0:'1', name1:'6', name2:'2', name3:'9', }, ]
桃子爱吃玉米let arr = [0, 1, 2, 3];
let array = [
{
name0: '1',
name1: '',
name2: '',
name3: '',
},
{
name0: '',
name1: '',
name2: '2',
name3: '',
},
{
name0: '',
name1: '6',
name2: '',
name3: '',
},
{
name0: '',
name1: '',
name2: '',
name3: '9',
},
];
let values = {};
// 遍历数组，更新values对象
array.forEach(item => {
arr.forEach((_, index) => {
let key = 'name' + index;
if (item[key]) {
values[key] = item[key];
}
});
});
array = array.map(() => {
let newObj = {};
arr.forEach((_, index) => {
let key = 'name' + index;
newObj[key] = values[key] || '';
});
return newObj;
});
console.log(array);
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