What you want is a scoped namespace like myVariables
to be used as a dictionary, e.g.
// this prevents keys like `hasOwnProperty` from being pre-defined on namespace
var myVariables = Object.create(null);
function test(name) {
myVariables['a' + name] = 'test text';
}
test('test');
console.log(myVariables.atest);
solved How to set specific variable name?