How to measure code execution time in VBScript or JavaScript?

Question

What is a good way to measure code execution time in VBScript?

Or failing that how to do it in JavaScript?

Answer 1

d = new Date();
x = 0;
for (i = 0; i < 1e7; ++i) { x += i; }
d2 = new Date();
d2 - d

12296

Use the Date object, which returns a valueOf() in milliseconds since Jan 1 1970. You can then subtract times to get elapsed time in milliseconds.