Is there a way to transform a string as a path?

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2

var sql = {
    datatypes: {

        integer:
        {
            INT: {
                mysql: 'INT'
            },
            SMALLINT: {
                mysql: 'SMALLINT'
            }
        }
    }
}

// Funciona
alert(sql.datatypes.integer.SMALLINT.mysql);

// Não funciona
teste("SMALLINT");
function teste(type){
     alert(sql.datatypes.integer.type.mysql);
}
javascript json
  • 1

    Duplicate of http://answall.com/a/101938/129 (how to access properties of a JSON/Object dynamically)

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2 answers

2

As you are sending a string, just switch to the selection mode to:

sql.datatypes.integer[type].mysql


var sql = {
    datatypes: {

        integer:
        {
            INT: {
                mysql: 'INT'
            },
            SMALLINT: {
                mysql: 'SMALLINT'
            }
        }
    }
}

// Funciona
alert(sql.datatypes.integer.SMALLINT.mysql);

// Funciona também
teste("SMALLINT");
function teste(type){
     alert(sql.datatypes.integer[type].mysql);
}

1

To access an attribute with the key as a string you must use brackets []:

sql.datatypes.integer[type].mysql

  • @jbueno thanks, always confusing the two haha

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