ASP Performance test report (turn) (vii)

Setting Option Explicit at the front of the ASP page requires that all variables be declared before they are used. For two reasons, this statement is usually recommended: first, applications can handle variables more quickly, and second, prevent unintended variables from being misused. In the following test, we removed Option Explicit and all dim statements.
Benchmark = 5.57 MS/page
Response time = 6.12 MS/page
difference = +0.55 milliseconds (increase by 9.8%)

Although we removed some code from the page, the response time still increased. Using Option Explicit can result in lengthy code, but its presence is good for performance. So, we have the following rule:
Always use option Explicit in VBScript.