Round a number to 2 decimal places

// Write a function that takes a number (a) as argument
// Round a to the 2nd digit after the comma
// Return the rounded number
function
myFunction
(
a
)
{

return
}
Test Cases:
myFunction(2.12397)
Expected
2.12
myFunction(3.136)
Expected
3.14
myFunction(1.12397)
Expected
1.12
myFunction(26.1379)
Expected
26.14