try

The try JS Statements executes code that may throw an exception.

When the exception is caught, more code may be executed.

try
{
    code
}
catch(exception)
{
    code
}

try
{
    code
}
finally
{
    code
}

try
{
    code
}
catch(exception)
{
    code
}
finally
{
    code
}

if

switch

European Computer Manufacturers Association (ECMA)