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

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Related Articles

Constants

Type Flags	Value	Unicode	URL Encoded	HTML Encoded	Description
JSON_INVALID	﷐	U+FDDO	"%EF%B7%90"		Value returned when inputs are not well formed.
JSON_OBJECT	﷑	U+FDD1	"%EF%B7%91"	
JSON_ARRAY	﷒	U+FDD2	"%EF%B7%92"	
JSON_NUMBER	﷓	U+FDD3	"%EF%B7%93"	
JSON_STRING	﷔	U+FDD4	"%EF%B7%94"	
JSON_NULL	﷕	U+FDD5	"%EF%B7%95"	
JSON_TRUE	﷖	U+FDD6	"%EF%B7%96"	
JSON_FALSE	﷗	U+FDD7	"%EF%B7%97"	
JSON_DELETE	﷘	U+FDD8	"%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 = "�";