کدنویسی آموزش JSON

" firstName " : " John "
                                    

{ " firstName " : " John " , " lastName " : " Doe " }
                                    

" employees " : [
       { " firstName " : " John " , " lastName " : " Doe " } , 
       { " firstName " : " Anna " , " lastName " : " Smith " } , 
       { " firstName " : " Peter " , " lastName " : " Jones " }
]
                                    

" employees " : [
       { " firstName " : " John " , " lastName " : " Doe " } , 
       { " firstName " : " Anna " , " lastName " : " Smith " } , 
       { " firstName " : " Peter " , " lastName " : " Jones " }
]
                                    

                                        < p   id= "demo" > </p>

< script>
    var employees = [
       {
           "firstName": "John",
           "lastName": "Doe"
       },
       {
           "firstName": "Anna",
           "lastName": "Smith"
       },
      {
          "firstName": "Peter",
          "lastName": "Jones"
      }
    ];
    document.getElementById("demo").innerHTML = employees[0].firstName + " " + employees[0].lastName;
</script>
                                    

                                        employees[ 0 ] [ " firstName " ] + "  " + employees[ 0 ] [ " lastName " ] ;
                                    

                                        employees [ 0 ].firstName = " Gilbert " ;
                                    

                                        employees[ 0 ][ " firstName " ] = " Gilbert " ;