I've read all over the place that global variables are bad and alternatives should be used. In Javascript specifically, what solution should I choose.
I'm thinking of a function, that when fed two arguments (function globalVariables(Variable,Value)) looks if Variable exists in a local array and if it does set it's value to Value, else, Variable and Value are appended. If the function is called without arguments (function globalVariables()) it returns the array. Perhaps if the function is fired with just one argument (function globalVariables(Variable)) it returns the value of Variable in the array.
What do you think? I'd like to hear your alternative solutions and arguments for using global variables.
How you would use globalVariables();
function append(){
globalVariables(variable1,value1); //globalVariables() would append variable1 to it's local array.
};
function retrieve(){
var localVariable1 = globalVariables(variable1); //globalVariables() would return value1.
};
function retrieveAll(){
var localVariable1 = globalVariables(); //globalVariables() would return the globalVariable()'s entire, local [persistently stored between calls] array.
};
function set(){
globalVariables(variable1,value2); //globalVariables() would set variable1 to value2.
};
Is this a Singleton Pattern BTW?
In this specific scenario a function may set a variable at one point in time, and much later another function, maybe when a user submits a form, will need to get that variable. Therefore the first function couldn't pass the variable as an argument to the later function as it would never be called from the first.
Thank you, I appreciate all your help!
