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Promotic

try...catch - statement of language JavaScript

Description:
Implements error handling.
Syntax:

try
{
  try-statemens
{
catch(err)
{
  catch-statements
}

try-statements Tracked script code
err The error object containing properties that can be used to identify additional details regarding the error:
catch-statements Script code executed while the error occured
Note:
If an error occurs in any statement in the try-statements section (e.g. division by zero, calling undefined method, ...), then the script is not terminated (the script would be terminated if the try statement is not used), but it jumps into the catch-statements section.

The whole statement consists of try and catch sections that are compulsory. There is also the finally section that is not used by the PROMOTIC system and therefore not described in this documentation.

For similar purpose in the VBScript language is used the statement On Error.
Example:
Processing of the script error (division by zero)
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try
{
var x = 0;
var y = 10 / x;
}
catch(err)
{
Pm.InfoErrorAdd(err.toString(), "");
}
PROMOTIC 9.0.28 SCADA system documentation MICROSYS, spol. s r.o.

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