Vue实现移除数组中特定元素的方法小结

   var removeArr = []
   this.currentDeviceList.forEach(row => {
      const removeIndex = this.multipleSelection.findIndex(item => item === row.deviceId)
      if (removeIndex !== -1) {
        removeArr.push(removeIndex)
      }
    })
     removeArr.forEach(removeItem => {
      this.multipleSelection.splice(removeItem, 1)
    })

removeArr.sort((a, b) => b - a) 
// 进行降序排序，从后面开始移除，这样位置变化也不会影响到multipleSelection

this.currentDeviceList.forEach(row => {
      const removeIndex = this.multipleSelection.findIndex(item => item === row.deviceId)
      if (removeIndex !== -1) {
        this.multipleSelection.splice(removeIndex, 1)
      }
    })

let arr = [1, 2, 3, 4, 5];
let elementToRemove = 3;
let newArr = arr.filter(item => item !== elementToRemove);
console.log(newArr); // 输出 [1, 2, 4, 5]

let arr = [1, 2, 3, 4, 5];
let indexToRemove = 2; // 要删除元素的索引
arr.splice(indexToRemove, 1);
console.log(arr); // 输出 [1, 2, 4, 5]

let arr = [1, 2, 3, 4, 5];
let indexToRemove = 2; // 要删除元素的索引
let newArr = arr.slice(0, indexToRemove).concat(arr.slice(indexToRemove + 1));
console.log(newArr); // 输出 [1, 2, 4, 5]
 

// 原始数组
var arr = [1, 2, 3, 4, 5];
// 要移除的元素列表
var removeList = [2, 4];
// 使用 filter() 函数过滤数组并返回新的数组
var newArr = arr.filter(function (item) {
    return !removeList.includes(item); // 判断当前元素是否在要移除的列表中
});
console.log(newArr); // 输出结果为 [1, 3, 5]

const arr = [1, 2, 3, 'a', 'b', 'c']; // 原始数组
const removeItems = ['a', 'b']; // 要移除的元素列表
// 使用reduce()函数进行批量删除操作
const resultArr = arr.reduce((accumulator, currentValue) => {
    if (!removeItems.includes(currentValue)) {
        accumulator.push(currentValue);
    }
    return accumulator;
}, []);
console.log(resultArr); // 输出结果为[1, 2, 3, 'c']

function removeElements(arr, positions) {
// 将要移除的位置按降序排列
const sortedPositions = [...positions].sort((a, b) => b - a);
    for (let i = 0; i < sortedPositions.length; i++) {
        arr.splice(sortedPositions[i], 1);
    }
}
// 示例用法
const array = ['A', 'B', 'C', 'D', 'E'];
removeElements(array, [2, 4]);
console.log(array); // 输出 ["A", "B", "D"]