JavaScript typedArray.values()用法示例

typedArray.values()是JavaScript中的内置函数, 用于获取typedArray()的内容的指定值。

语法如下：

typedArray.values()

参数它不接受任何参数。

返回值：它返回给定typedArray对象的指定值。

JavaScript代码显示此功能的工作方式：

代码1：

<script>
  
    //Constructing a new typedArray Uint8Array() with some value.
    const A = new Uint8Array([ 5, 10, 15, 20, 25, 30 ]);
  
    //Calling typedArray.values() function.
    const B = A.values();
  
    //Shifting array iterator to next element
    //iterator assigned to 10
    B.next();
     
    //iterator assigned to 15
    B.next();
     
    //iterator assigned to 20
    B.next();
  
    //Printing value 20 
    document.write(B.next().value);
     
</script>

输出如下：

20

代码2：

<script>
  
    //Constructing a new typedArray Uint8Array() with some value.
    const A = new Uint8Array([5, 10, 15, 20, 25, 30]);
  
    //Calling typedArray.values() function.
    const B = A.values();
  
    //Shifting array iterator to next element
    //iterator assigned to 10
    B.next();
     
    //iterator assigned to 15
    B.next();
     
    //iterator assigned to 20
    B.next();
     
    //iterator assigned to 25
    B.next();
     
    //iterator assigned to 30
    B.next();
     
    //Now iterator go beyond the index
    B.next();
  
    document.write(B.next().value); 
     
</script>

输出如下：

undefined

这里的输出是不确定的, 因为数组迭代器越过了上限。

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