let arr1 = [
{id:1,name'小明',age:18},
{id:2,name'小红',age:16},
{id:4,name'小紫',age:22},
{id:5,name'小绿',age:20},
]
let arr2 =[
{id:2,sex:女},
{id:5,sex:男},
]
//函数封装
resArr(arr1, arr2) {
return arr1.filter((v) => arr2.every((val) => val.id!= v.id));
},
//调用
let newArr= this.resArr(arr1,arr2)
console.log(newArr);
let newArr= arr1.filter((v) =>
arr2.every((val) => val.id != v.id)
)
[
{id:1,name'小明',age:18},
{id:3,name'小红',age:16},
{id:4,name'小紫',age:22},
]
let getId = arr2.map(item=>item.id)
console.log(set)
let newArr = arr1.filter(item=>!getId.includes(item.id))
console.log(newArr)
let newArr = arr1.filter((item) => !arr2.some((ele) => ele.id === item.id));
console.log('newArr ', newArr );
数组删除其中的对象或元素,在前端是比较常见的需求。
我现在比较常用的方法如下:
模拟数据如下:
let arr = [{"id":1,"name":"小红",},
{"id":2,"name":"小明",},
{"id":3,"name":"小绿"}]
方式一:假设 去掉name为小明的 这条数据
arr.splice(
arr.indexOf(arr.find((e) => {
return e.name=== "小明"; }
)
), 1);
let index = -1;
for(let i=0;i-1){
arr.splice(index,1);
}
arr.forEach((item, i) => {
if (item.id === idNum) { //idNum为需要删除的id idNum=3
// console.log("找到了", item, i);
arr.splice(i, 1)
}
})
这些方法只适合删除具有唯一标识的对象。