Question

说用户可以在这里example.com/?page=1&q=123

我可以得到 [{page: 1}, {q: 123}]

使用图书馆

但是说我想用[{page: 1}]做某事仍然很危险，因为用户可以输入我不需要的额外参数。

所以我的想法是我提供一个预设 const preset = [{page: 1}, {valid: true}]

如何获得[{page: 1}, {valid: true}] from says [{page: 1}, {valid: true}, {abc: 123}, {other: 'others'}]？

Answer 1

var arr = [{page: 1}, {valid: true}, {abc: 123}, {other: 'others'}];
var result = arr.filter(x => Object.keys(x).includes('page') || Object.keys(x).includes('valid'));
console.log(result);

Answer 2

使用filter和Object.keys遍历数组并检查返回键obj

const mixArray = [{page: 1}, {valid: true}, {abc: 123}, {other: 'others'}];

function filterRequiredObj(arr=[],filters=[]){
  return arr.filter((f)=>{
    const keys= Object.keys(f)[0];   
    if(filters.includes(keys)) return f
  })
}


const newArray = filterRequiredObj(mixArray,['page','valid'])
console.log('newArray',newArray)

将路径参数验证为对象数组

2 个答案: