JavaScript

Extract PDF from JSON

Demonstrates how to extract a PDF file contained within JSON. The file is represented as a base64 string within the JSON. Note: This example can extract any type of file, not just a PDF file.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

var json = new CkJsonObject();

// Load the JSON.
success = json.LoadFile("qa_data/json/JSR5U.json");
if (success !== true) {
    console.log(json.LastErrorText);
    return;
}

// The JSON we loaded contains this:

// 	{
// 	...
// 	...
// 	  "data": {
// 	    "content": "JVBERi0xLjQ..."
// 	  }
// 	...
// 	...
// 	}

var sb = new CkStringBuilder();
json.StringOfSb("data.content",sb);

var bd = new CkBinData();
bd.AppendEncodedSb(sb,"base64");

success = bd.WriteFile("qa_output/a0015.pdf");