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js删除数组中某个指定元素

作者：xlnxin发布时间：2023-10-06分类：其他相关教程浏览：240

导读：filter删除12345vararr=[1,2,3,4,5], element=2 arr=a...

filter 删除

var arr = [1,2,3,4,5],

element = 2

arr = arr.filter(item => item != element)

// arr => [1,3,4,5]

splice 删除

var element = 2,

arr = [1,2,3,4,5]

arr.splice(arr.indexOf(2), 1)

// arr => [1,3,4,5]

forEach、map、for 删除

var arr = [1,2,3,4,5],

element = 2,

new_arr = []

arr.forEach(item => (item != element && new_arr.push(item)))

// new_arr => [1,3,4,5]

// map 同理

var arr = [1,2,3,4,5],

element = 2,

new_arr = []

for (let i = 0; i < arr.length; i++) {

arr[i] != element && new_arr.push(arr[i])

}

// new_arr => [1,3,4,5]

set 删除

var arr = [1,2,3,4,5],

element = 2

var new_set = new Set(arr)

new_set.delete(element)

var new_arr = [...new_set]

// new_arr => [1,3,4,5]

标签：js

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