Question

Let’s say I have a function which is being passed a string which originally came from getElementById, and I have an object with the same name as that string’s value, is there a way to call that object? I won’t know which object I want until I get that value from the element’s ID.

For Instance:

StartingFunction(SomeID){
someVariable = document.getElementById(SomeID).id
somefuntion(someVariable)
}

someFunction(ElementID){
// need to call Object.Value of whichever object is named the same as the value of   
//ElementID here

}

ElementID.Value obviously won’t work since ElementID is just a variable, not an object…

Answer 1

You can pass the element directly to someFunction.

For example:

StartingFunction(SomeID){
  var element = document.getElementById(SomeID);
  somefuntion(element);
}

someFunction(element){
  alert(element.id);
  alert(element.value);
  // Any other processing you want to do with element
}

Or if you need to be able to get an element from an id just use getElementById

someFunction(id) {
  var element = document.getElementById(id);
  alert(element.value);
  // Any other processing you need to do with the element DOM object
}