JSON Syntax

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Json syntax consists of a key and a value

  • JSON syntax is derived from JavaScript object notation syntax
  • JSON is just a string in object notation syntax format
  • turned_in_notSyntax

    /* Syntax-In JSON */

    { "key":value }

    /* Syntax-In javaScript */

    { key:value }
    • Remember!
    • Name of the key is case-sensitive
      Name of the key is always started with an alphabet and can only carry alphabets & numbers
      In JSON key must be declared inside double quotes (" ") but in javaScript choice is yours
Example:
  • turned_in_notSyntax Sample
    { "name":"Riya", "age":23 }
  • trending_downSyntax Description
    • Key must be declared inside double quotes (" ")
    • Key & value are separated by colon (:)
    • All Key & value are declared inside curly brackets { }
    • Multiple Key & value are separated by comma (,)

JSON Values

Json values can be only one of the following data types

  • turned_in_notData Types
    • String
    • Number
    • Array
    • Object
    • Boolean
    • Null
Example:
  • turned_in_notString Type
    { "name":"Riya" }
    • Note! String value must be written inside double quotes (" ")
  • label_outlineNumber Type
    { "age":23 }
    • Note! Number values can be only integer/float
  • label_outlineArray Type
    { 
      "courses":["html","css","css3"]
    }
    • Note! Array value must be written inside square brackets [ ]
  • label_outlineObject Type
    { 
     "phone":{ "modal":"iphone X", "color":"black", "price":"$999" }
    }
    • Note! Object value must be written inside curly brackets { }
  • label_outlineBoolean Type
    { "pass":true }
    • Note! Boolean values can be only true/false
  • label_outlineNull Type
    { "quantity":null }
    • Note! Null values can be only null
    • null means empty
  • Ways to Add JSON
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