VBScript Erase用法及代码示例

擦除函数用于重置固定大小数组的值并释放动态数组的内存。它的行为取决于数组的类型。

用法

Erase ArrayName

固定数值数组，数组中的每个元素都重置为零。
固定字符串数组，数组中的每个元素都重置为零长度 " "。
对象数组，数组中的每个元素都被重置为特殊值Nothing。

示例

<!DOCTYPE html>
<html>
   <body>
      <script language = "vbscript" type = "text/vbscript">
         Dim NumArray(3)
         NumArray(0) = "VBScript"
         NumArray(1) = 1.05
         NumArray(2) = 25
         NumArray(3) = #23/04/2013#

         Dim DynamicArray()
         ReDim DynamicArray(9)   ' Allocate storage space.

         Erase NumArray          ' Each element is reinitialized.
         Erase DynamicArray      ' Free memory used by array.

         ' All values would be erased.
         Document.write("The value at Zeroth index of NumArray is " & NumArray(0) & "<br />")
         Document.write("The value at First index of NumArray is " & NumArray(1) & "<br />")
         Document.write("The value at Second index of NumArray is " & NumArray(2) & "<br />")
         Document.write("The value at Third index of NumArray is " & NumArray(3) & "<br />")

      </script>
   </body>
</html>

当上面的代码保存为 .HTML 并在 Internet Explorer 中执行时，它会产生以下结果——

The value at Zero index of NumArray is 
The value at First index of NumArray is 
The value at Second index of NumArray is 
The value at Third index of NumArray is

相关用法

注：本文由纯净天空筛选整理自 VBScript Erase Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。