This documentation details operations and conversions involving JSON values, including construction, data type validation, translation to arrays, and object manipulation within the JSON format.

JsonValue Construction

Translating the Screen Item to JsonValue

Convert to JsonValue

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"Json_toJsonValue\" disabled=\"true\" x=\"-22\" y=\"112\"/></xml>"}

This is used to convent the Screen Item to Json Value.

Parameters: Screen Item

Output: Json Value

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"Json_toJsonValue\"><value name=\"data\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"'{name\\\":\\\"Hello World\\\", \\\"Number\\\":255}'\"</field></block></value></block></value></block></value></block></statement></block></xml>"}

The output:

Translating the Text to JsonValue

Convert the content of string to JsonValue

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"Json_parse\" disabled=\"true\" x=\"-22\" y=\"157\"><value name=\"str\"><shadow type=\"text\" disabled=\"true\"><field name=\"TEXT\"/></shadow></value></block></xml>"}

This is used to convent the String to JsonValue.

Parameters: String

Output: Json Value

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"{\\\"name\\\":\\\"Hello World\\\", \\\"Number\\\":255}\"</field></block></value></block></value></block></value></block></statement></block></xml>"}

The output:

Common JsonValue Operations

Checking Data Type of JsonValue

Json Value is

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_is\" disabled=\"true\" x=\"-67\" y=\"292\"><field name=\"type\">JsonValueDataType.String</field><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to check whether the Json Value is in correct type.

Parameters: Json Value

Condition: String (Default)/Number/Boolean/Array/Object/Null

Output: Boolean (True/False)

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">45</field></shadow></value></block></value><next><block type=\"basic_consoleLogNum\"><value name=\"num\"><block type=\"Json_JsonValue_asNumber\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"controls_if\"><mutation else=\"1\"/><value name=\"IF0\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">TRUE</field></shadow><block type=\"Json_JsonValue_is\"><field name=\"type\">JsonValueDataType.String</field><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><statement name=\"DO0\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"It is a String.\"</field></block></value></block></statement><statement name=\"ELSE\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"It is not a String.\"</field></block></value></block></statement></block></next></block></next></block></statement></block></xml>"}

The output:

Translating the JsonValue to String

Json Value stringify

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_stringify\" disabled=\"true\" x=\"-22\" y=\"382\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to change the Json Value to String.

Parameters: Json Value

Output: String

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"{\\\"name\\\":\\\"Hello World\\\", \\\"Number\\\":255}\"</field></block></value></block></value></block></value></block></statement></block></xml>"}

The output:

JsonValue Validation

Json Value is valid

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_isValid\" disabled=\"true\" x=\"-22\" y=\"472\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to check whether the Json Value is valid.

Parameters: Json Value

Output: Boolean (True/False)

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"{\\\"a\\\":1, \\\"b\\\": 3}\"</field></block></value></block></value><next><block type=\"controls_if\"><mutation else=\"1\"/><value name=\"IF0\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">TRUE</field></shadow><block type=\"Json_JsonValue_isValid\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><statement name=\"DO0\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"The Json Value is valid.\"</field></block></value></block></statement><statement name=\"ELSE\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"The Json Value is not valid.\"</field></block></value></block></statement></block></next></block></statement></block></xml>"}

The output:

Type Conversions

Translating JsonValue to JsonValue Array

Json Value as JsonValue array

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_asJsonValueArray\" disabled=\"true\" x=\"-22\" y=\"248\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to Json Value array.

Parameters: Json Value

Output: Json Value Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>jsonArray</variable><variable>index</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"[\\\"Hello\\\", \\\"World\\\"]\"</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">jsonArray</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asJsonValueArray\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"pxt_controls_for\"><value name=\"VAR\"><shadow type=\"variables_get_reporter\"><field name=\"VAR\">index</field></shadow></value><value name=\"TO\"><shadow type=\"math_whole_number\"><field name=\"NUM\">0</field></shadow><block type=\"math_arithmetic\"><field name=\"OP\">MINUS</field><value name=\"A\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"lists_length\"><value name=\"VALUE\"><block type=\"variables_get\"><field name=\"VAR\">jsonArray</field></block></value></block></value><value name=\"B\"><shadow type=\"math_number\"><field name=\"NUM\">1</field></shadow></value></block></value><statement name=\"DO\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"lists_index_get\"><value name=\"LIST\"><block type=\"variables_get\"><field name=\"VAR\">jsonArray</field></block></value><value name=\"INDEX\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"variables_get\"><field name=\"VAR\">index</field></block></value></block></value></block></value></block></statement></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Translating JsonValue to Boolean Array

Json Value as boolean array

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>jsonArray</variable><variable>index</variable></variables><block type=\"Json_JsonValue_asBooleanArray\" disabled=\"true\" x=\"-22\" y=\"652\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to Boolean array.

Parameters: Json Value

Output: Boolean Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>boolArray</variable><variable>index</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"[true, false, false, true]\"</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">boolArray</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asBooleanArray\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"pxt_controls_for\"><value name=\"VAR\"><shadow type=\"variables_get_reporter\"><field name=\"VAR\">index</field></shadow></value><value name=\"TO\"><shadow type=\"math_whole_number\"><field name=\"NUM\">0</field></shadow><block type=\"math_arithmetic\"><field name=\"OP\">MINUS</field><value name=\"A\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"lists_length\"><value name=\"VALUE\"><block type=\"variables_get\"><field name=\"VAR\">boolArray</field></block></value></block></value><value name=\"B\"><shadow type=\"math_number\"><field name=\"NUM\">1</field></shadow></value></block></value><statement name=\"DO\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">boolArray[index].toString()</field></block></value></block></statement></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Translating JsonValue to Number Array

Json Value as number array

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>boolArray</variable><variable>index</variable></variables><block type=\"Json_JsonValue_asNumberArray\" disabled=\"true\" x=\"-22\" y=\"428\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to number array.

Parameters: Json Value

Output: Number Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>numArray</variable><variable>index</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"[1, 2, 3, 4]\"</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">numArray</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asNumberArray\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"pxt_controls_for\"><value name=\"VAR\"><shadow type=\"variables_get_reporter\"><field name=\"VAR\">index</field></shadow></value><value name=\"TO\"><shadow type=\"math_whole_number\"><field name=\"NUM\">0</field></shadow><block type=\"math_arithmetic\"><field name=\"OP\">MINUS</field><value name=\"A\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"lists_length\"><value name=\"VALUE\"><block type=\"variables_get\"><field name=\"VAR\">numArray</field></block></value></block></value><value name=\"B\"><shadow type=\"math_number\"><field name=\"NUM\">1</field></shadow></value></block></value><statement name=\"DO\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">numArray[index].toString()</field></block></value></block></statement></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Translating JsonValue to String Array

Json Value as string array

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>numArray</variable><variable>index</variable></variables><block type=\"Json_JsonValue_asStringArray\" disabled=\"true\" x=\"-22\" y=\"608\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to string array.

Parameters: Json Value

Output: String Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>stringArray</variable><variable>index</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">[\"Hello\",\"World\"]</field></shadow></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">stringArray</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asStringArray\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"pxt_controls_for\"><value name=\"VAR\"><shadow type=\"variables_get_reporter\"><field name=\"VAR\">index</field></shadow></value><value name=\"TO\"><shadow type=\"math_whole_number\"><field name=\"NUM\">0</field></shadow><block type=\"math_arithmetic\"><field name=\"OP\">MINUS</field><value name=\"A\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"lists_length\"><value name=\"VALUE\"><block type=\"variables_get\"><field name=\"VAR\">stringArray</field></block></value></block></value><value name=\"B\"><shadow type=\"math_number\"><field name=\"NUM\">1</field></shadow></value></block></value><statement name=\"DO\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"lists_index_get\"><value name=\"LIST\"><block type=\"variables_get\"><field name=\"VAR\">stringArray</field></block></value><value name=\"INDEX\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"variables_get\"><field name=\"VAR\">index</field></block></value></block></value></block></statement></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Checking JsonValue is True or False

Json Value as Boolean

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>stringArray</variable><variable>index</variable></variables><block type=\"Json_JsonValue_asBoolean\" disabled=\"true\" x=\"-22\" y=\"428\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to check Json Value is true or false.

Parameters: Json Value

Output: Boolean (True/False)

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">true</field></shadow></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"controls_if\"><mutation else=\"1\"/><value name=\"IF0\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">TRUE</field></shadow><block type=\"Json_JsonValue_asBoolean\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><statement name=\"DO0\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"This is TRUE.\"</field></block></value></block></statement><statement name=\"ELSE\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"This is FALSE.\"</field></block></value></block></statement></block></next></block></next></block></statement></block></xml>"}

The output:

Translating JsonValue to Number

Json Value as number

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_asNumber\" disabled=\"true\" x=\"23\" y=\"202\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to number.

Parameters: Json Value

Output: Number

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>number</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">222</field></shadow></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">number</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asNumber\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogNum\"><value name=\"num\"><block type=\"variables_get\"><field name=\"VAR\">number</field></block></value></block></next></block></next></block></statement></block></xml>"}

The output:

JsonValue as Number – Output

Json Value as string

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>number</variable></variables><block type=\"Json_JsonValue_asString\" disabled=\"true\" x=\"22\" y=\"473\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to convert the Json Value to string.

Parameters: Json Value

Output: String

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>string</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"\\\"Hello World\\\"\"</field></block></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">string</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_asString\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"variables_get\"><field name=\"VAR\">string</field></block></value></block></next></block></next></block></statement></block></xml>"}

The output:

Object Operations

Showing the Object in JsonValue Format

Json Value get values as JsonValue

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>string</variable></variables><block type=\"Json_JsonValue_getValues\" disabled=\"true\" x=\"-22\" y=\"472\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to get the object of the Json Value to Json Value.

Parameters: Json Value (Object Operation)

Output: Json Value

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>getKeys</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">{\"name\":\"Hello World\", \"Number\":255}</field></shadow></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">getKeys</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_getKeys\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"text_join\"><mutation items=\"2\"/><value name=\"ADD0\"><shadow type=\"text\"><field name=\"TEXT\">The keys are: </field></shadow></value><value name=\"ADD1\"><shadow type=\"text\"><field name=\"TEXT\"/></shadow><block type=\"variables_get\"><field name=\"VAR\">getKeys</field></block></value></block></value></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Showing Keys in String Array Format

Convert the content of string to JsonValue

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>getKeys</variable></variables><block type=\"Json_JsonValue_getKeys\" disabled=\"true\" x=\"23\" y=\"517\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value></block></xml>"}

This is used to get keys of the Json Value to string array.

Parameters: Json Value (Object Operation)

Output: String Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>getKeys</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">{\"name\":\"Hello World\", \"Number\":255}</field></shadow></value></block></value><next><block type=\"variables_set\"><field name=\"VAR\">getKeys</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_JsonValue_getKeys\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"text_join\"><mutation items=\"2\"/><value name=\"ADD0\"><shadow type=\"text\"><field name=\"TEXT\">The keys are: </field></shadow></value><value name=\"ADD1\"><shadow type=\"text\"><field name=\"TEXT\"/></shadow><block type=\"variables_get\"><field name=\"VAR\">getKeys</field></block></value></block></value></block></next></block></next></block></next></block></statement></block></xml>"}

The output:

Displaying Value with Related Key

JsonValue get value using key

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable><variable>getKeys</variable></variables><block type=\"Json_JsonValue_get\" disabled=\"true\" x=\"-22\" y=\"652\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value><value name=\"key\"><shadow type=\"text\" disabled=\"true\"><field name=\"TEXT\"/></shadow></value></block></xml>"}

This is used to get the value using the object key.

Parameters: Json Value (Object Operation)

Output: Json Value Array

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">{\"name\":\"Hello World\", \"Number\":255}</field></shadow></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"Json_JsonValue_get\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value><value name=\"key\"><shadow type=\"text\"><field name=\"TEXT\">name</field></shadow></value></block></value></block></value></block></next></block></next></block></statement></block></xml>"}

The output:

Finding the Corresponding Key

JsonValue has key

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"Json_JsonValue_has\" disabled=\"true\" x=\"-22\" y=\"697\"><value name=\"jsonValue\"><block type=\"variables_get\" disabled=\"true\"><field name=\"VAR\">jsonValue</field></block></value><value name=\"key\"><shadow type=\"text\" disabled=\"true\"><field name=\"TEXT\"/></shadow></value></block></xml>"}

This is used to check whether the Json Value contains the corresponding key.

Parameters:

• Json Value (Object Operation)
• String

Output: Boolean (True/False)

Sample code:

{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><variables><variable>jsonValue</variable></variables><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"variables_set\"><field name=\"VAR\">jsonValue</field><value name=\"VALUE\"><shadow type=\"math_number\"><field name=\"NUM\">0</field></shadow><block type=\"Json_parse\"><value name=\"str\"><shadow type=\"text\"><field name=\"TEXT\">{\"name\":\"Hello World\", \"Number\":255}</field></shadow></value></block></value><next><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"Json_JsonValue_stringify\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value></block></value><next><block type=\"controls_if\"><mutation else=\"1\"/><value name=\"IF0\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">TRUE</field></shadow><block type=\"Json_JsonValue_has\"><value name=\"jsonValue\"><block type=\"variables_get\"><field name=\"VAR\">jsonValue</field></block></value><value name=\"key\"><shadow type=\"text\"><field name=\"TEXT\">name</field></shadow></value></block></value><statement name=\"DO0\"><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">The Json Value contains that key.</field></shadow></value></block></statement><statement name=\"ELSE\"><block type=\"basic_consoleLogText\"><value name=\"text\"><shadow type=\"text\"><field name=\"TEXT\">The Json Value does not contain that key.</field></shadow></value></block></statement></block></next></block></next></block></statement></block></xml>"}

The output: