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JSON Crash Course
LAURENCE VANDEYAR, SENIOR SYSTEMS ENGINEER
MARCH 3RD, 2015
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What is JSON?
JSON stands for JavaScript Object Notation
JSON is language independent *
JSON is a lightweight data-interchange format
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JSON Syntax
JavaScript object notation syntax:
Data is in name/value pairs
"firstName":“Laurence"
Data is separated by commas
“firstName":“Laurence", "lastName":“Vandeyar"
Curly braces hold objects
{"firstName":“Laurence", "lastName":“Vandeyar"}
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JSON Syntax (cont.)
Square brackets hold arrays
[
{"firstName":“Laurence", "lastName":“Vandeyar"},
{"firstName":“Michael", "lastName":“Pereira"},
{"firstName":“Kenneth", "lastName":“Tamsberg"}
]
Complete JSON Object Array
{"employees":[
{"firstName":“Laurence", "lastName":“Vandeyar"},
{"firstName":“Michael", "lastName":“Pereira"},
{"firstName":“Kenneth", "lastName":“Tamsberg"}
]}
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JSON Values
JSON values can be:
A number (integer or floating point)
A string (in double quotes)
A Boolean (true or false)
An array (in square brackets)
An object (in curly braces)
null
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Example
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Links
http://json.org/
http://jsonformatter.curiousconcept.com/