TypedArray.prototype.join()

TypedArray 实例的 join() 方法通过连接此类型化数组中的所有元素（用逗号或指定的分隔符字符串分隔）来创建并返回一个新字符串。如果类型化数组只有一项，则将返回该项而不使用分隔符。该方法与 Array.prototype.join() 的算法相同。

¥The join() method of TypedArray instances creates and returns a new string by concatenating all of the elements in this typed array, separated by commas or a specified separator string. If the typed array has only one item, then that item will be returned without using the separator. This method has the same algorithm as Array.prototype.join().

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语法

¥Syntax

js
join()
join(separator)

参数

¥Parameters

separator Optional

用于分隔类型化数组的每对相邻元素的字符串。如果省略，则类型化数组元素用逗号 (",") 分隔。

返回值

¥Return value

连接所有类型化数组元素的字符串。如果 array.length 是 0，则返回空字符串。

¥A string with all typed array elements joined. If array.length is 0, the empty string is returned.

描述

¥Description

详细信息请参见 Array.prototype.join()。此方法不是通用的，只能在类型化数组实例上调用。

¥See Array.prototype.join() for more details. This method is not generic and can only be called on typed array instances.

示例

¥Examples

使用 join()

¥Using join()

js
const uint8 = new Uint8Array([1, 2, 3]);
uint8.join(); // '1,2,3'
uint8.join(" / "); // '1 / 2 / 3'
uint8.join(""); // '123'

规范

Specification
ECMAScript Language Specification
# sec-%typedarray%.prototype.join

¥Specifications

浏览器兼容性

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¥Browser compatibility

也可以看看

¥See also