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JavaScript 数组 toSpliced() 方法


示例

// 创建一个数组
const fruits = ["Banana", "Orange", "Apple", "Mango"];

// At position 2, add "Lemon" and "Kiwi":
const fruits2 = fruits.toSpliced(2, 0, "Lemon", "Kiwi");
亲自试一试 »

更多示例如下!


描述

toSpliced() 方法用于添加和/或删除数组元素。

toSpliced() 方法返回一个新数组。

toSpliced() 方法不会修改原始数组。

toSpliced() 方法是 splice() 方法的复制版本



语法

array.toSpliced(index, count, item1, ....., itemX)

参数

参数 描述
index 必填。
要添加或删除元素的索引(位置)。
负值表示从数组末尾开始计数。
count 可选。
要移除的项目数量。
item1,... 可选。
要添加的新元素。

返回值

类型 描述
数组 包含更改的新数组。

更多示例

示例

// 创建一个数组
const fruits = ["Banana", "Orange", "Apple", "Mango"];

// 在位置 2,移除 2 个元素
const fruits2 = fruits.toSpliced(2, 2);
亲自试一试 »

示例

// 创建一个数组
const fruits = ["Banana", "Orange", "Apple", "Mango"];

// At position 2, remove 1 item, add "Lemon" and "Kiwi"
const fruits2 = fruits.toSpliced(2, 1, "Lemon", "Kiwi");
亲自试一试 »


浏览器支持

toSpliced() 是 JavaScript 2023 的一项特性。

ES 2023 自 2023 年 7 月起,所有现代浏览器均已支持 ES 2023。

Chrome
110
Edge
110
Firefox
115
Safari
16.4
Opera
96
2023年2月 2023年2月 2023年7月 2023年3月 2023年5月

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