Is null
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Overview
A spell function checking if a given attribute equals to a NULL value or not.
Usage
<source lang="javascript"> bool is_null(attr); </source>
- attr - any variable to be checked
Results
Returns true if attr is NULL otherwise false.
Examples
<source lang="javascript"> if(is_null(string1)) {
// Enter an alert message that appears when the if statement is fulfilled
zmsg=format(" string1 is required in order to close this ticket");
set_error(1);
set_return_data(zmsg);
return;
} </source> <source lang="javascript"> string contact_persid; if (!is_null(group)) {
contact_persid = misc::find_mang(group);
} </source>
