Here is a utility method that can be used to check if some TEXT represents a valid OBJECT / JSON:

// UTIL_IS_TEXT_AN_OBJECT // $1 := TEXT of JSON to check // $0 := BOOLEAN representing validitity If (Count parameters=1)    C_BOOLEAN($0)    C_TEXT($method;$result;$1)    $method:=Method called on error    ON ERR CALL("ErrHandler")    $result:=JSON Stringify(JSON Parse($1;is object))    ON ERR CALL($method)    If (($result="") | ($result="undefined"))       $0:=False    Else       $0:=True    End if End if

Create a method named ErrHandler to handle the error:

// on err call // do nothing

If this method is saved as UTIL_IS_TEXT_AN_OBJECT it could be used like this:

C_TEXT($text) $text:="{\"OK\": True}" // The JSON is invalid because True should be written as true. If (UTIL_IS_TEXT_AN_OBJECT ($text))    C_OBJECT($ob)    $ob:=JSON Parse($text;Is object) Else    ALERT("$text is not an object") End if

This is useful for checking arbitrary data before parsing it as an object because an error is generated if you attempt to parse invalid text as a object.

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Updated: February 1st, 2018