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(VBScript) Get the Root of a JSON DocumentDemonstrates how to get back to the JSON root object from anywhere in the JSON document. This example uses the following JSON document: { "flower": "tulip", "abc": { "x": [ { "a" : 1 }, { "b1" : 100, "b2" : 200 }, { "c" : 3 } ], "y": 200, "z": 200 } } Note: This example requires Chilkat v11.0.0 or greater.
Dim fso, outFile Set fso = CreateObject("Scripting.FileSystemObject") 'Create a Unicode (utf-16) output text file. Set outFile = fso.CreateTextFile("output.txt", True, True) success = 0 set json = CreateObject("Chilkat.JsonObject") jsonStr = "{""flower"": ""tulip"",""abc"":{""x"": [{ ""a"" : 1 },{ ""b1"" : 100, ""b2"" : 200 },{ ""c"" : 3 }],""y"": 200,""z"": 200}}" success = json.Load(jsonStr) If (success = 0) Then outFile.WriteLine(json.LastErrorText) WScript.Quit End If ' Get the "abc" object. set abcObj = CreateObject("Chilkat.JsonObject") success = json.ObjectOf2("abc",abcObj) If (success = 0) Then outFile.WriteLine(json.LastErrorText) WScript.Quit End If ' Side note: The JSON of a sub-part of the document can be emitted from any JSON object: abcObj.EmitCompact = 0 outFile.WriteLine(abcObj.Emit()) ' Navigate to the "x" array set xArray = CreateObject("Chilkat.JsonArray") success = abcObj.ArrayOf2("x",xArray) ' Navigate to the 2nd object contained within the array. This contains members b1 and b2 set bObj = CreateObject("Chilkat.JsonObject") success = xArray.ObjectAt2(1,bObj) ' Show that we're at "b1/b2". ' The value of "b1" should be "200" outFile.WriteLine("b2 = " & bObj.IntOf("b2")) ' Now go back to the JSON doc root: set docRoot = CreateObject("Chilkat.JsonObject") success = bObj.GetDocRoot2(docRoot) ' We'll skip the null check and assume it's non-null... ' Pretty-print the JSON doc from the root to show that this is indeed the root. docRoot.EmitCompact = 0 outFile.WriteLine(docRoot.Emit()) outFile.Close |
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