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(Tcl) JSON: Nested ObjectsHere we have a JSON object that contains nested JSON objects. This example demonstrates how to access the contents of the nested objects. { "name": "donut", "image": { "fname": "donut.jpg", "w": 200, "h": 200 }, "thumbnail": { "fname": "donutThumb.jpg", "w": 32, "h": 32 } } Note: This example requires Chilkat v11.0.0 or greater.
load ./chilkat.dll set success 0 set json [new_CkJsonObject] # This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars). # The presence of whitespace chars for pretty-printing makes no difference to the Load # method. set jsonStr "{\"name\": \"donut\",\"image\":{\"fname\": \"donut.jpg\",\"w\": 200,\"h\": 200},\"thumbnail\":{\"fname\": \"donutThumb.jpg\",\"w\": 32,\"h\": 32}}" set success [CkJsonObject_Load $json $jsonStr] if {$success == 0} then { puts [CkJsonObject_lastErrorText $json] delete_CkJsonObject $json exit } # Get the "image" object. set imageObj [new_CkJsonObject] CkJsonObject_ObjectOf2 $json "image" $imageObj puts "image: fname=[CkJsonObject_stringOf $imageObj fname], width=[CkJsonObject_IntOf $imageObj w], height=[CkJsonObject_IntOf $imageObj h]" # Get the "thumbnail" object. set thumbObj [new_CkJsonObject] CkJsonObject_ObjectOf2 $json "thumbnail" $thumbObj puts "thumbnail: fname=[CkJsonObject_stringOf $thumbObj fname], width=[CkJsonObject_IntOf $thumbObj w], height=[CkJsonObject_IntOf $thumbObj h]" delete_CkJsonObject $json delete_CkJsonObject $imageObj delete_CkJsonObject $thumbObj |
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