JSON NULL

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/LSL

JSON_NULL

Description

Constant: string JSON_NULL = "�";

The string constant JSON_NULL has the value "�"

Return value for llJsonValueType function indicating the Json data type of a given address specifier in a given string-serialized JSON text.

Also the return string value for llJsonGetValue function when the bare word 'null' is at the given address specifier in a given string-serialized JSON text.

Also used to encode the bare word 'null' within a Json text to signify an empty, valueless placeholder Value at that location (the empty LSL String, "", can be used as well for that).

Caveats

Related Articles

Constants

Type Flags	Value	Unicode	Integer	URL Encoded	HTML Encoded	Description
JSON_INVALID	﷐	U+FDDO	64976	"%EF%B7%90"		Value returned when inputs are not well formed.
JSON_OBJECT	﷑	U+FDD1	64977	"%EF%B7%91"	
JSON_ARRAY	﷒	U+FDD2	64978	"%EF%B7%92"	
JSON_NUMBER	﷓	U+FDD3	64979	"%EF%B7%93"	
JSON_STRING	﷔	U+FDD4	64980	"%EF%B7%94"	
JSON_NULL	﷕	U+FDD5	64981	"%EF%B7%95"	
JSON_TRUE	﷖	U+FDD6	64982	"%EF%B7%96"	
JSON_FALSE	﷗	U+FDD7	64983	"%EF%B7%97"	
JSON_DELETE	﷘	U+FDD8	64984	"%EF%B7%98"		Used with llJsonSetValue to remove a key-value pair.

Functions

•	llJsonValueType
•	llJsonGetValue

Examples

// Showing usage of JSON_NULL
// within a Json text string
string jText;

default
{
    state_entry(){
        jText = llList2Json(JSON_OBJECT, ["A", 4, "B", 5]);
        llOwnerSay(jText); // jText is '{"A":4,"B":5}'
        llOwnerSay(llJsonGetValue(jText, ["B"])); // The string "5"
        jText = llJsonSetValue(jText, ["B"], JSON_NULL);
        llOwnerSay(jText); // jText is now '{"A":4,"B":null}'
        llOwnerSay(llJsonGetValue(jText, ["B"])); // The Unicode value of JSON_NULL

        }
}

Deep Notes

All Issues

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BUG-3692

A

JSON_NULL may be deceptively returned instead of JSON_INVALID when noncompliant Json text is encountered by either llJsonValueType or llJsonGetValue. Fixed with release 13.09.21.281328.

Signature
string JSON_NULL = "�";